COMMUNITY ADDON - Double/Multiple Asteroids fixes for SE

02 Nov 2016 14:34

Use this thread to post all scripts regarding double or multiple asteroids, using reference data for example from Wikipedia https://en.wikipedia.org/wiki/Minor-planet_moon, Johnstons Archives http://www.johnstonsarchive.net/astro/asteroidmoons.html or the IAU Minor Center database and others.

See the Addons Manual for how to make a binary planet script.

Note:
Since data sources use values of Epoch that are very distant in time for many asteroids, their calculated position in sky relative to recent calculated ephemerids may vary from slightly off to completely wrong. This is expected for the algorithm used by SE at the moment, and not really important for a casual trip through the Solar System. By using a recent calculated Mean Anomaly (I took as reference JPL Small Body Database) we solve this small inconvenience.
(Link to the original thread)

Asteroids covered so far:

(22) Kalliope	(2754) Efimov	(6186) Zenon	(32039) 2000 JO23	(160256) 2002 PD149
(41) Daphne	(2815) Soma	(6244) Okamoto	(38628) Huya	(162000) 1990 OS
(45) Eugenia	(3073) Kursk	(6265) 1985 TW3	(42355) Typhon	(162483) 2000 PJ5
(87) Sylvia	(3122) Florence	(6369) 1983 UC	(44620) 1999 RS43	(163693) Atira
(90) Antiope	(3169) Ostro	(6384) Kervin	(46829) McMahon	(164121) 2003 YT1
(93) Minerva	(3309) Brorfelde	(6615) Plutarchos	(47171) Lempo	(174567) Varda
(107) Camilla	(3433) Fehrenbach	(6708) Bobbievaile	(48639) 1995 TL8	(175706) 1996 FG3
(113) Amalthea	(3671) Dionysus	(7088) Ishtar	(50000) Quaoar	(182933) 2002 GZ31
(121) Hermione	(3673) Levy	(7187) Isobe	(51356) 2000 RY76	(185851) 2000 DP107
(130) Elektra	(3703) Volkonskaya	(7225) Huntress	(52316) Daveslater	(208996) 2003 AZ84
(216) Kleopatra	(3749) Balam	(7369) Gavrilin	(53110) 1999 AR7	(225088) 2007 OR10
(243) Ida	(3782) Celle	(7958) Leakey	(53432) 1999 UT55	(229762) 2007 UK126
(283) Emma	(3868) Mendoza	(8116) Jeanperrin	(55637) 2002 UX25	(275809) 2001 QY297
(317) Roxane	(3873) Roddy	(8306) Shoko	(58534) Logos	(276049) 2002 CE26
(379) Huenna	(3905) Doppler	(8373) Stephengould	(60458) 2000 CM114	(285263) 1998 QE2
(617) Patroclus	(3951) Zichichi	(8474) Rettig	(65489) Ceto	(300163) 2006 VW139
(624) Hektor	(4029) Bridges	(9069) Hovland	(65803) Didymos	(303712) 2005 PR21
(702) Alauda	(4272) Entsuji	(9260) Edwardolson	(66063) 1998 RO1	(311066) 2004 DC
(762) Pulcova	(4296) Van Woerkom	(9617) Grahamchapman	(66391) 1999 KW4	(341520) Mors-Somnus
(809) Lundia	(4383) Suruga	(9783) Tensho-kan	(66652) Borasisi	(348400) 2005 JF21
(854) Frostia	(4440) Tchantches	(10123) Fideoja	(69230) Hermes	(357439) 2004 BL86
(939) Isberga	(4492) Debussy	(10208) Germanicus	(69406) 1995 SX48	(363027) 1998 ST27
(1052) Belgica	(4514) Vilen	(11264) Claudiomaccone	(76818) 2000 RG79	(363067) 2000 CO101
(1089) Tama	(4607) Seilandfarm	(12008) Kandrup	(79360) Sila-Nunam	(363599) 2004 FG11
(1139) Atami	(4674) Pauling	(12326) Shirasaki	(79472) Chiorny	(364171) 2006 JZ81
(1313) Berna	(4765) Wasserburg	(15268) Wendelinefroger	(80218) 1999 VO123	(374851) 2006 VV2
(1338) Duponta	(4786) Tatianina	(15700) 1987 QD	(80806) 2000 CM105	(385186) 1994 AW1
(1453) Fennia	(4868) Knushevia	(15822) 1994 TV15	(82075) 2000 YW134	(385446) Manwe
(1509) Esclangona	(4951) Iwamoto	(16525) Shumarinaiko	(82157) 2001 FM185	(399307) 1991 RJ2
(1727) Mette	(5112) Kusaji	(16635) 1993 QO	(88611) Teharonhiawako	(399774) 2005 NB7
(1830) Pogson	(5143) Heracles	(17246) Christophedumas	(88710) 2001 SL9	(410777) 2009 FD
(1862) Apollo	(5261) Eureka	(17260) Kusnirak	(90482) Orcus	(450894) 2008 BT18
(1866) Sisyphus	(5381) Sekhmet	(17365) 1978 VF11	(99913) 1997 CZ5	(452561) 2005 AB
(2006) Polonskaya	(5407) 1992 AX	(18890) 2000 EV26	(119067) 2001 KP76	(461852) 2006 GY2
(2044) Wirt	(5425) Vojtech	(20325) Julianoey	(119979) 2002 WC19	(469420) 2001 XP254
(2047) Smetana	(5477) Holmes	(22899) Alconrad	(120347) Salacia	(469505) 2003 FE128
(2121) Sevastopol	(5481) Kiuchi	(23621) 1996 PA	(123509) 2000 WK183	(469514) 2003 QA91
(2131) Mayall	(5536) Honeycutt	(24465) 2000 SX155	(134860) 2000 OJ67	(469705) 2005 EF298
(2343) Siding Spring	(5646) 1990 TR	(26074) Carlwirtz	(136617) 1994 CC	(481532) 2007 LE
(2449) Kenos	(5674) Wolff	(26308) 1998 SM165	(137170) 1999 HF1	(488453) 1994 XD
(2478) Tokai	(5872) Sugano	(26471) Tracybecker	(139775) 2001 QG298	(494658) 2000 UG11
(2535) Hameenlinna	(5899) Jedicke	(29314) Eurydamas	(148780) Altjira
(2577) Litva	(5905) Johnson	(31345) 1998 PG	(153591) 2001 SN263
(2623) Zech	(6016) Carnelli	(31450) 1999 CU9	(153958) 2002 AM31
(2691) Sersic	(6084) Bascom	(32008) Adriangalad	(160091) 2000 OL67

Others - No catalog number

1994 CJ1	2000 WT169	2002 XH91	2004 KH19
1998 WV24	2001 FL185	2003 HG57	2004 PB108
1998 WW31	2001 QC298	2003 QR91	2005 EO304
1999 OJ4	2001 QQ322	2003 QY90	2005 GD187
1999 RT214	2001 QW322	2003 SS84	2005 VZ122
1999 RY214	2001 RZ143	2003 TJ58	2006 BR284
1999 XY143	2001 XR254	2003 UN284	2006 CH69
2000 CF105	2002 BM26	2003 WU188	2006 SF369
2000 CQ114	2002 VF130	2003 YS179	2007 DT103
2000 QL251	2002 VT130	2003 YU179	2014 WZ120

Asteroids-bin.sc
Updated catalog for SE 0980 of binary/multiple asteroids is available here as attachment, containing all asteroids listed above, to be placed in SE data/catalogs/planets folder.

09 Dec 2016 07:44

A Mars crosser binary asteroid, 1992 AX

Asteroid "1992 AX/(5407) 1992 AX"
{
    ParentBody         "Sol"
    Radius            1.95
    AbsMagn            13.9
    SlopeParam        0.15
    Albedo            0.18
    RotationPeriod    2.549
    Orbit
    {
        Epoch            2457400.5
        SemiMajorAxis    1.838397297
        Period            2.492684204
        MeanAnomaly        149.33
        ArgOfPericenter    108.705264
        Eccentricity    0.277565693
        Inclination        11.3901438
        AscendingNode    117.766716
        PericenterDist    1.32812128
        RefPlane         "Ecliptic"
    }
}

Asteroid "S1997 (5407) 1"
{
    ParentBody    "(5407) 1992 AX"
    Radius        0.39
    Orbit
    {
        SemiMajorAxis    3.8770653092E-08 // 5.8 km
        Period            0.001542264326669 // 0.5633 days
        MeanAnomaly        0
        ArgOfPericenter    0
        Eccentricity    0.04
        Inclination        0
        AscendingNode    0
        PericenterDist    0
        RefPlane        "Equator"
    }
}

02 Mar 2017 03:29

Discovery of new asteroids tirelessly proceeds. While last year in April we were adding 107 Camilla and its companion to the catalog, in May a third component was discovered by ESO VLT.
So... Camilla system becomes a triple system with S/2016 (107) 1:

Asteroid "S2016 (107) 1"
{
    ParentBody    "(107) Camilla"
    Radius        1.75
    Orbit
    {
    SemiMajorAxis    2.27275039109376E-06 // 340 km
    Period            0.001368954665958 // 0.5 days
    MeanAnomaly        0
    ArgOfPericenter    180
    Eccentricity    0
    Inclination        0
    AscendingNode    0
    PericenterDist    0
    RefPlane         "Equator"
    }
}

04 Mar 2017 10:28

Added 1992 AX and new Camilla's satellite. Asteroids have fairly large 'moons' in their skies. Camilla's 'moons' are as twice as large as Earth's Moon.

So, there are just 2 asteroids added since 0.98?

04 Mar 2017 12:56

SpaceEngineer wrote:
Source of the post So, there are just 2 asteroids added since 0.98?

Since the launch of the new website, unfortunately yes. But since 0.98 in the updated file in OP there are also 1338 Duponta, 1453 Fennia, 1509 Esclangona, 1830 Pogson and 2047 Smetana from the old website.
Others will follow soon^TM

11 Mar 2017 09:28

26471 Tracybecker, main belt binary asteroid:

Barycenter "Tracybecker system"
{
    ParentBody "Sol"
    Orbit
    {
        Epoch            2456800.5
        SemiMajorAxis    1.917977412
        Period            2.656277445
        MeanAnomaly        286.265853
        ArgOfPericenter    58.829546
        Eccentricity    0.154476722
        Inclination        19.6937661
        AscendingNode    268.761803
        PericenterDist    1.62169455
        RefPlane         "Ecliptic"
    }
}

Asteroid "Tracybecker/(26471) Tracybecker"
{            
    ParentBody         "Tracybecker system"
    AsterType         "Hungaria"
    Radius            2.845
    AbsMagn            13.2
    SlopeParam        0.15
    Albedo            0.304
    RotationPeriod    2.687
    Obliquity        0
    Orbit            
    {            
        SemiMajorAxis    5.37554512950526E-09 // 18 km
        Period            0.004481957576348 // 1.637 days
        MeanAnomaly        0
        ArgOfPericenter    0
        Eccentricity    0
        Inclination        5
        AscendingNode    0
        PericenterDist    0
        RefPlane        "Equator"            
    }            
}            
            
Asteroid "S|2009 (26471) 1"
{            
    ParentBody     "Tracybecker system"
    Radius        1.025
    Obliquity     0  // no data
    Orbit
    {
        SemiMajorAxis    1.14947023071327E-07 // 18 km
        Period            0.004481957576348 // 1.637 days
        MeanAnomaly        0
        ArgOfPericenter    180
        Eccentricity    0
        Inclination        5
        AscendingNode    0
        PericenterDist    0
        RefPlane        "Equator"
    }
}

12008 Kandrup, Mars crossing binary asteroid:

Barycenter "Kandrup system"
{
 ParentBody "Sol"
    Orbit
    {
 Epoch 2457800.5
 SemiMajorAxis 1.996504957
 Period 2.821016259
 MeanAnomaly 182.97537
 ArgOfPericenter 344.889724
 Eccentricity 0.31620832
 Inclination 29.743011
 AscendingNode 263.326438
 PericenterDist 1.36519348
 RefPlane "Ecliptic"
    }
}

Asteroid "Kandrup/(12008) Kandrup"
{
 ParentBody "Kandrup system"
 Radius 1.7
 AbsMagn 13.1
 SlopeParam 0.15
 Albedo 0.592
 Obliquity 5 // no data
 RotationPeriod 32.9034
    Orbit
    {
 SemiMajorAxis 2.0655468224506E-08 // 10 km
 Period 0.003753673694058 // 1.371 days
 MeanAnomaly 0
 ArgOfPericenter 0
 Eccentricity 0
 Inclination 0
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
    }
}
 
Asteroid "S|2016 (12008) 1"
{
 ParentBody "Kandrup system"
 Radius 1.3
 Obliquity 5 // no data
    Orbit
    {
 SemiMajorAxis 4.61904029981784E-08 // 10 km
 Period 0.003753673694058 // 1.371 days
 MeanAnomaly 0
 ArgOfPericenter 180
 Eccentricity 0
 Inclination 0
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
    }
}

Updated in OP.

11 Mar 2017 21:18

66652 Borasisi and 58534 Logos, Kuiper belt binaries:

Barycenter "Borasisi-Pabu"
{
    ParentBody  "Sol"

    Orbit
    {
        Epoch            2456800.5
        SemiMajorAxis    43.616
        Period            288.058
        MeanAnomaly        56.624
        ArgOfPericenter    196.692
        Eccentricity    0.08462
        Inclination        0.562939
        AscendingNode    84.588
        PericenterDist    39.9254
        RefPlane        "Ecliptic"
    }
}

Asteroid "Borasisi/(66652) Borasisi"
{
    ParentBody         "Borasisi-Pabu"
    AsterType         "Cubewano"
    Radius            63
    AbsMagn            5.9
    SlopeParam        0.15
    Albedo            0.236
    RotationPeriod    6.4
    Obliquity        54    // no data
    Orbit
    {
        SemiMajorAxis    1.06929687607893E-05 // 4528 km
        Period            0.126734537483225 // 46.2888 days
        MeanAnomaly        0
        ArgOfPericenter    0
        Eccentricity    0.47
        Inclination        54.31
        AscendingNode    0
        PericenterDist    0
        RefPlane        "Equator"
    }
}

Asteroid "Pabu/(66652) I Pabu"
{
    ParentBody     "Borasisi-Pabu"
    Radius        51.5
    Obliquity    54    // no data
    Orbit
    {
        SemiMajorAxis    1.95748417288423E-05 // 4528 km
        Period            0.126734537483225 // 46.2888 days
        MeanAnomaly        0
        ArgOfPericenter    180
        Eccentricity    0.47
        Inclination        54.31
        AscendingNode    0
        PericenterDist    0
        RefPlane        "Equator"
    }
}

Barycenter "Logos-Zoe"
{
    ParentBody  "Sol"

    Orbit
    {
        Epoch            2456800.5
        SemiMajorAxis    45.443
        Period            306.347
        MeanAnomaly        55.772
        ArgOfPericenter    337.78
        Eccentricity    0.12372
        Inclination        2.89533
        AscendingNode    132.5057
        PericenterDist    39.8212
        RefPlane        "Ecliptic"
    }
}

Remove "Logos" {ParentBody "Sol"}

Asteroid "Logos/(58534) Logos"
{
    ParentBody     "Logos-Zoe"
    AsterType     "Cubewano"
    Radius        41
    AbsMagn        6.7
    SlopeParam    0.15
    Albedo        0.195
    Obliquity    95    // no data
    Orbit
    {
        SemiMajorAxis    1.9386790538864E-05     // 8217 km
        Period            0.848395964681023     // 309.87 days
        MeanAnomaly        0
        ArgOfPericenter    0
        Eccentricity    0.5463
        Inclination        95.43
        AscendingNode    0
        PericenterDist    0
        RefPlane        "Equator"
    }
}

Asteroid "Zoe/(58534) Logos I Zoe"
{
    ParentBody     "Logos-Zoe"
    Radius        33.5
    Obliquity    95 // no data
    Orbit
    {
        SemiMajorAxis    3.55404618448158E-05 // 8217 km
        Period            0.848395964681023 // 309.87 days
        MeanAnomaly        0
        ArgOfPericenter    180
        Eccentricity    0.5463
        Inclination        95.43
        AscendingNode    0
        PericenterDist    0
        RefPlane        "Equator"
    }
}

Also, binary formerly known as (17246) 2000 GL74 is now named (17246) Christophedumas.

N0B0DY · 12 Mar 2017 01:36

Mosfet, a small syntax error detected:

► Show Spoiler

RefPlane        “Ecliptic”

should be:

RefPlane        "Ecliptic"

Similarly for equator

Thanks for your additions!

N0B0DY · 12 Mar 2017 03:08

There is an additional syntax error displayed in the console even after I corrected the above:

► Show Spoiler

I can't lock it down

12 Mar 2017 08:18

Oops, thanks N0B0DY, I corrected the file and updated in OP, I don't have additional messages in console.
See if that last message is gone, in case we'll check se.log file, that should give more info.

N0B0DY · 12 Mar 2017 10:39

Thanks Mofset! No error message in console

17 Mar 2017 15:47

385446 Manwe, aka 2003 QW111, it's a Kuiper Belt Object with its companion Thorondor orbiting about 6674 km away.

Remove "2003 QW111" {ParentBody "Sol"}

Barycenter "Manwe-Thorondor"
{
    ParentBody    "Sol"
    Orbit
    {
        Epoch            2456800.5
        SemiMajorAxis    43.635
        Period            288.246
        MeanAnomaly        273.396
        ArgOfPericenter    21.058
        Eccentricity    0.11541
        Inclination        2.666383
        AscendingNode    68.52
        PericenterDist    38.599
        RefPlane        "Ecliptic"
    }
}

Asteroid "Manwe/(385446) Manwe" 
{
    ParentBody     "Manwe-Thorondor"
    Radius        80
    AbsMagn        6.5
    SlopeParam    0.15
    Albedo        0.1
    Obliquity    25 // no data
    Orbit
    {
        SemiMajorAxis    7.12651901088472E-06 // 6674 km
        Period            0.301651898553252 // 110.176 days
        MeanAnomaly        0
        ArgOfPericenter    0
        Eccentricity    0.5632
        Inclination        25.58
        AscendingNode    0
        PericenterDist    0
        RefPlane        "Equator"
    }
}

Asteroid "Thorondor/(385446) Manwe I Thorondor"
{
    ParentBody     "Manwe-Thorondor"
    Radius        46
    Obliquity    25 // no data
    Orbit
    {
        SemiMajorAxis    3.74864154431349E-05 // 6674 km
        Period            0.301651898553252 // 110.176 days
        MeanAnomaly        0
        ArgOfPericenter    180
        Eccentricity    0.5632
        Inclination        25.58
        AscendingNode    0
        PericenterDist    0
        RefPlane        "Equator"
    }
}

341520 Mors-Somnus, a binary plutino;

Remove "2007 TY430" {ParentBody "Sol"}

Barycenter "Mors-Somnus"
{
 ParentBody "Sol"
 Orbit
 {
 Epoch 2456800.5
 SemiMajorAxis 39.32345656
 Period 246.5958314
 MeanAnomaly 355.4641997
 ArgOfPericenter 205.7261065
 Eccentricity 0.266606565
 Inclination 11.2856433
 AscendingNode 196.7161545
 PericenterDist 28.83956489
 RefPlane "Ecliptic"
 }
}

Asteroid "Mors/(341520) Mors"
{
 ParentBody "Mors-Somnus"
 AsterType "Plutino"
 Radius 51
 AbsMagn 6.8
 SlopeParam 0.15
 Albedo 0.23
 RotationPeriod 9.28
 Obliquity 15 // no data
 Orbit
 {
 SemiMajorAxis 6.50301206216535E-05 // 21040 km
 Period 2.66042649782344 // 971.7 days
 MeanAnomaly 0
 ArgOfPericenter 0
 Eccentricity 0.1492
 Inclination 15.68
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

Asteroid "Somnus/(341520) Mors I Somnus"
{
 ParentBody "Mors-Somnus"
 AsterType "Plutino"
 Radius 48.5
 Obliquity 15 // no data
 Orbit
 {
 SemiMajorAxis 7.56135924308746E-05 // 21040 km
 Period 2.66042649782344 // 971.7 days
 MeanAnomaly 0
 ArgOfPericenter 180
 Eccentricity 0.1492
 Inclination 15.68
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

3951 Zichichi, main belt binary:

Barycenter "Zichichi system"
{
 ParentBody "Sol"
 Orbit
 {
 Epoch 2456800.5
 SemiMajorAxis 2.339662074
 Period 3.578803925
 MeanAnomaly 24.148928
 ArgOfPericenter 151.973843
 Eccentricity 0.173971564
 Inclination 5.4152373
 AscendingNode 270.077545
 PericenterDist 1.9326274
 RefPlane "Ecliptic"
 }
}

Asteroid "Zichichi/(3951) Zichichi"
{
 ParentBody "Zichichi system"
 Radius 3.19
 AbsMagn 12.7
 SlopeParam 0.15
 Albedo 0.325
 RotationPeriod 3.39423
 Orbit
 {
 SemiMajorAxis 3.73377033476016E-09 // 16 km
 Period 0.003148595731704 // 1.15 days
 MeanAnomaly 0
 ArgOfPericenter 0
 Eccentricity 0
 Inclination 0
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

Asteroid "S2006 (3951) 1"
{
 ParentBody "Zichichi system"
 Radius 1.055
 Obliquity 0 // no data
 Orbit
 {
 SemiMajorAxis 1.03219623621535E-07 // 16 km
 Period 0.003148595731704 // 1.15 days
 MeanAnomaly 0
 ArgOfPericenter 180
 Eccentricity 0
 Inclination 0
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

Asteroids-bin.sc updated in OP.

18 Mar 2017 17:24

(175706) 1996 FG3, binary NEA

Asteroid "1996 FG3/(175706) 1996 FG3"
{
    ParentBody        "Sol"
    AsterType        "Apollo"
    Radius            0.845
    AbsMagn            18.4
    SlopeParam        -0.041
    Albedo            0.045
    Oblateness        0.1
    RotationPeriod    3.595195
    Orbit
    {
        Epoch            2457000.5
        SemiMajorAxis    1.05411509537
        Period            1.08226110054485
        MeanAnomaly        354.0375874
        ArgOfPericenter    23.994556
        Eccentricity    0.349930304
        Inclination        1.9917805
        AscendingNode    299.726703
        PericenterDist    0.685248279
        RefPlane        "Ecliptic"
    }
}

Asteroid "S1998 (1996 FG3) 1"
{
    ParentBody        "1996 FG3"
    Radius            0.245
    RotationPeriod    16.5
    Orbit
    {
        SemiMajorAxis    1.95765998718461E-08 // 3 km
        Period            0.001842476084913 // 0.67295 days
        MeanAnomaly        0
        ArgOfPericenter    0
        Eccentricity    0.035
        Inclination        0
        AscendingNode    0
        PericenterDist    0
        RefPlane        "Equator"
    }
}

2000 DP107, another double NEA

Barycenter "2000 DP107 system"
{
 ParentBody "Sol"
 Orbit
 {
 Epoch 2456800.5
 SemiMajorAxis 1.365489387
 Period 1.59566124
 MeanAnomaly 234.4468014
 ArgOfPericenter 289.7253003
 Eccentricity 0.376719239
 Inclination 8.6699909
 AscendingNode 358.7314843
 PericenterDist 0.851083264
 RefPlane "Ecliptic"
 }
}

Asteroid "2000 DP107/(185851) 2000 DP107"
{
 ParentBody "2000 DP107 system"
 AsterType "Apollo"
 Radius 0.4
 AbsMagn 18.2
 SlopeParam 0.15
 Albedo 0.15
 RotationPeriod 2.774
 Obliquity 17 // no data
 Orbit
 {
 SemiMajorAxis 8.7730555293E-10 // 2.62 km
 Period 0.00481324460551 // 1.758 days
 MeanAnomaly 0
 ArgOfPericenter 0
 Eccentricity 0.01
 Inclination 17
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

Asteroid "S2000 (2000 DP107) 1"
{
 ParentBody "2000 DP107 system"
 Radius 0.15
 Obliquity 17 // no data
 Orbit
 {
 SemiMajorAxis 1.66363127074133E-08 // 2.62 km
 Period 0.00481324460551 // 1.758 days
 MeanAnomaly 0
 ArgOfPericenter 180
 Eccentricity 0.01
 Inclination 17
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

148780 Altjira, a Kuiper Belt object

Barycenter "Altjira system"
{
 ParentBody "Sol"
 Orbit
 {
 Epoch 2456800.5
 SemiMajorAxis 44.4009
 Period 295.867
 MeanAnomaly 118.61
 ArgOfPericenter 301.36
 Eccentricity 0.05814
 Inclination 5.2038
 AscendingNode 1.9671
 PericenterDist 41.819
 RefPlane "Ecliptic"
 }
}

Remove "Altjira" {ParentBody "Sol"}

Asteroid "Altjira/(148780) Altjira"
{
 ParentBody "Altjira system"
 AsterType "Cubewano"
 Radius 123
 AbsMagn 5.7
 SlopeParam 0.15
 Albedo 0.043
 Obliquity 35.19 // no data
 Orbit
 {
 SemiMajorAxis 2.78261769677359E-05 // 9904 km
 Period 0.382105364271624 // 139.561 days
 MeanAnomaly 0
 ArgOfPericenter 0
 Eccentricity 0.3445
 Inclination 35.19
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

Asteroid "S2007 (148780) 1"
{
 ParentBody "Altjira system"
 Radius 110.5
 Obliquity 35.19 // no data
 Orbit
 {
 SemiMajorAxis 3.83779738912108E-05 // 9904 km
 Period 0.382105364271624 // 139.561 days
 MeanAnomaly 0
 ArgOfPericenter 180
 Eccentricity 0.3445
 Inclination 35.19
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

19 Mar 2017 17:34

Just learned that 9617 Grahamchapman, named so from the British actor/writer of the Monty Python group, it's a binary main belt asteroid.

Barycenter "Grahamchapman system"
{
 ParentBody "Sol"
 Orbit
 {
 Epoch 2456800.5
 SemiMajorAxis 2.224704823
 Period 3.318308784
 MeanAnomaly 219.978636
 ArgOfPericenter 281.24534
 Eccentricity 0.113042943
 Inclination 6.1368614
 AscendingNode 165.582679
 PericenterDist 1.973217643
 RefPlane "Ecliptic"
 }
}

Asteroid "Grahamchapman/(9617) Grahamchapman"
{
 ParentBody "Grahamchapman system"
 Radius 1.37
 AbsMagn 14.6
 SlopeParam 0.15
 Albedo 0.244
 RotationPeriod 2.2856
 Obliquity 15 // no data
 Orbit
 {
 SemiMajorAxis 6.71505265747742E-10 // 5.2 km
 Period 0.002211409367389 // 0.8077 days
 MeanAnomaly 0
 ArgOfPericenter 0
 Eccentricity 0
 Inclination 0
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

Asteroid "S2006 (9617) 1"
{
 ParentBody "Grahamchapman system"
 Radius 0.37
 Obliquity 15 // no data
 Orbit
 {
 SemiMajorAxis 3.40883477700482E-08 // 5.2 km
 Period 0.002211409367389 // 0.8077 days
 MeanAnomaly 0
 ArgOfPericenter 180
 Eccentricity 0
 Inclination 0
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

1998 SM165, Kuiper belt object:

Remove "1998 SM165" {ParentBody "Sol"}

Barycenter "1998 SM165 system"
{
 ParentBody "Sol"
 Orbit
 {
 Epoch 2456800.5
 SemiMajorAxis 47.675
 Period 329.19
 MeanAnomaly 43.221
 ArgOfPericenter 131.216
 Eccentricity 0.369454
 Inclination 13.50696
 AscendingNode 183.16624
 PericenterDist 30.0614
 RefPlane "Ecliptic"
 }
}

Asteroid "1998 SM165/(26308) 1998 SM165"
{
 ParentBody "1998 SM165 system"
 Radius 134
 AbsMagn 5.8
 SlopeParam 0.15
 Albedo 0.063
 RotationPeriod 8.4
 Obliquity 70 // no data
 Orbit
 {
 SemiMajorAxis 2.0432670021767E-06 // 11377 km
 Period 0.356360802823612 // 130.158 days
 MeanAnomaly 0
 ArgOfPericenter 0
 Eccentricity 0.4727
 Inclination 81.57
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

Asteroid "S2001 (26308) 1"
{
 ParentBody "1998 SM165 system"
 Radius 40.5
 Obliquity 70 // no data
 Orbit
 {
 SemiMajorAxis 7.40072806878714E-05 // 11377 km
 Period 0.356360802823612 // 130.158 days
 MeanAnomaly 0
 ArgOfPericenter 180
 Eccentricity 0.4727
 Inclination 81.57
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

20 Mar 2017 16:22

2121 Sevastopol, main belt binary:

Barycenter "Sevastopol system"
{
 ParentBody "Sol"
 Orbit
 {
 Epoch 2456800.5
 SemiMajorAxis 2.183210944
 Period 3.225906323
 MeanAnomaly 88.854949
 ArgOfPericenter 159.985117
 Eccentricity 0.178710897
 Inclination 4.3764854
 AscendingNode 145.732206
 PericenterDist 1.79304736
 RefPlane "Ecliptic"
 }
}

Asteroid "Sevastopol/(2121) Sevastopol"
{
 ParentBody "Sevastopol system"
 Radius 4.31
 AbsMagn 12.1
 SlopeParam 0.15
 Albedo 0.248
 RotationPeriod 2.9064
 Obliquity 5 // no data
 Orbit
 {
 SemiMajorAxis 1.12577667847219E-08 // 26 km
 Period 0.004232807827143 // 1.546 days
 MeanAnomaly 0
 ArgOfPericenter 0
 Eccentricity 0
 Inclination 0
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

Asteroid "S2010 (2121) 1"
{
 ParentBody "Sevastopol system"
 Radius 1.77
 Obliquity 5 // no data
 Orbit
 {
 SemiMajorAxis 1.62541498394258E-07 // 26 km
 Period 0.004232807827143 // 1.546 days
 MeanAnomaly 0
 ArgOfPericenter 180
 Eccentricity 0
 Inclination 0
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

2131 Mayall, again a main belt asteroid:

Barycenter "Mayall system"
{
 ParentBody "Sol"
 Orbit
 {
 Epoch 2456800.5
 SemiMajorAxis 1.887274522
 Period 2.592751044
 MeanAnomaly 342.050863
 ArgOfPericenter 38.364046
 Eccentricity 0.111037884
 Inclination 33.995975
 AscendingNode 306.063088
 PericenterDist 1.67771555
 RefPlane "Ecliptic"
 }
}

Asteroid "Mayall/(2131) Mayall"
{
 ParentBody "Mayall system"
 AsterType "Hungaria"
 Radius 4.14
 AbsMagn 12.72
 SlopeParam 0.15
 Albedo 0.198
 RotationPeriod 2.568
 Orbit
 {
 SemiMajorAxis 2.07030265628413E-09 // 18 km
 Period 0.002678496699414 // 0.9783 days
 MeanAnomaly 0
 ArgOfPericenter 0
 Eccentricity 0
 Inclination 0
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

Asteroid "S2009 (2131) 1"
{
 ParentBody "Mayall"
 Radius 1.075
 Orbit
 {
 SemiMajorAxis 1.18252265544548E-07 // 18 km
 Period 0.002678496699414 // 0.9783 days
 MeanAnomaly 0
 ArgOfPericenter 180
 Eccentricity 0
 Inclination 0
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

2478 Tokai, main belt:

Barycenter "Tokai system"
{
 ParentBody "Sol"
 Orbit
 {
 Epoch 2456800.5
 SemiMajorAxis 2.225290189
 Period 3.319618544
 MeanAnomaly 107.605718
 ArgOfPericenter 233.299096
 Eccentricity 0.068326263
 Inclination 4.1377104
 AscendingNode 228.827934
 PericenterDist 2.073244426
 RefPlane "Ecliptic"
 }
}

Asteroid "Tokai/(2478) Tokai"
{
 ParentBody "Tokai system"
 Radius 4.05
 AbsMagn 12
 SlopeParam 0.15
 Albedo 0.208
 RotationPeriod 25.885
 Obliquity 5 // no data
 Orbit
 {
 SemiMajorAxis 3.8125621482887E-08 // 21 km
 Period 0.002954204169138 // 1.079 days
 MeanAnomaly 0
 ArgOfPericenter 0
 Eccentricity 0
 Inclination 0
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

Asteroid "S2007 (2478) 1"
{
 ParentBody "Tokai system"
 Radius 2.915
 RotationPeriod 25.885
 Obliquity 5 // no data
 Orbit
 {
 SemiMajorAxis 1.0225070808475E-07 // 21 km
 Period 0.002954204169138 // 1.079 days
 MeanAnomaly 0
 ArgOfPericenter 180
 Eccentricity 0
 Inclination 0
 AscendingNode 0
 PericenterDist 0
 RefPlane "Equator"
 }
}

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