// Filename: GJ_625_BC.sc
// JackDole 2017.08.19 16:49:04
// Put this in 'addons\catalogs\stars'
// http://simbad.u-strasbg.fr/simbad/sim-id?Ident=gl+625&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id
//------------------------------------------------------------------------------
RemoveStar "Gliese 625/AC+54 1646-56/HIP 80459"
StarBarycenter "GJ 625 system"
{
RA 16 25 24.6232
Dec 54 18 14.762
Dist 6.490135
}
//------------------------------------------------------------------------------
// Filename: GJ_625.sc
// JackDole 2017.08.17 11:39:49
// http://exoplanet.eu/catalog/gj_625_b/
// https://en.wikipedia.org/wiki/AC_54_1646-56
// Put this in 'addons\catalogs\planets'
//------------------------------------------------------------------------------
Star "GJ 625/Gliese 625/HIP 80459/AC 54 1646-56"
{
ParentBody "GJ 625 system"
Class "M2 V"
RadSol 0.31
MassSol 0.3
AppMagn 10.17
Teff 3499.0
FeH -0.38
}
Planet "GJ 625 b/Gliese 625 b/HIP 80459 b/AC 54 1646-56 b"
{
ParentBody "GJ 625"
Mass 3.02162850
Msini 3.02162850
DiscDate "2017"
DiscMethod "RadVel"
Updated "2017.05.19"
Orbit
{
SemiMajorAxis 0.078399
Period 0.040078
Eccentricity 0.13
ArgOfPericen 240.0
}
}
//------------------------------------------------------------------------------
// Filename: TauCetiBC.sc
// JackDole 2017.08.17 13:36:32
//------------------------------------------------------------------------------
// http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=tau%20Cet
//------------------------------------------------------------------------------
RemoveStar "TAU Cet/52 Cet/Gliese 71/HIP 8102/HD 10700"
StarBarycenter "Tau Ceti"
{
RA 01 44 04.08338
Dec -15 56 14.9262
Dist 3.650
}
//------------------------------------------------------------------------------
// Filename:TauCeti.sc
// JackDole 2017.08.17 13:29:06
//------------------------------------------------------------------------------
// https://arxiv.org/pdf/1708.02051.pdf
//
// http://exoplanet.eu/catalog/tau_cet_g/
// http://exoplanet.eu/catalog/tau_cet_h/
// http://exoplanet.eu/catalog/tau_cet_f/
// http://exoplanet.eu/catalog/tau_cet_e/
//------------------------------------------------------------------------------
Star "TAU Cet/52 Cet/Gliese 71/HIP 8102/HD 10700"
{
ParentBody "Tau Ceti"
Class "G8.5 V"
MassSol 0.783
RadSol 0.793
AppMagn 3.49
AbsMagn 5.69
Lum 0.52
Teff 5344.0
FeH -0.55
RotationPeriod 816
Age 5.8
}
Planet "Tau Ceti g"
{
ParentBody "Tau Cet"
Mass 1.75
Msini 1.75
DiscMethod "RadVel"
DiscDate "2017"
Updated "2017.08.15"
Orbit
{
SemiMajorAxis 0.133 // a
Period 0.054758
Eccentricity 0.06 // e
ArgOfPericen 35.3409 // w
MeanAnomaly 43.3623 // M0
}
}
Planet "Tau Ceti h"
{
ParentBody "Tau Cet"
Mass 1.83
Msini 1.83
DiscMethod "RadVel"
DiscDate "2017"
Updated "2017.08.15"
Orbit
{
SemiMajorAxis 0.243
Period 0.135280
Eccentricity 0.23
ArgOfPericen 7.4484513367
MeanAnomaly -72.7656399816
}
}
Planet "Tau Ceti e/HD 10700 e"
{
ParentBody "Tau Cet"
Mass 3.94
Msini 3.94
DiscMethod "RadVel"
DiscDate "2012"
Updated "2017.08.15"
Orbit
{
SemiMajorAxis 0.538
Period 0.443541
Eccentricity 0.18
ArgOfPericen 22.3453540101
MeanAnomaly 355.806790776
}
}
Planet "Tau Ceti f/HD 10700 f"
{
ParentBody "Tau Cet"
Mass 3.94
Msini 3.94
DiscMethod "RadVel"
DiscDate "2012"
Updated "2017.08.15"
Orbit
{
SemiMajorAxis 1.334
Period 1.741666
Eccentricity 0.16
ArgOfPericen 119.7482
MeanAnomaly -38.9611
}
}
//------------------------------------------------------------------------------
As far as I know, Tau Ceti b, c and d are no longer valid. They were apparently wrong.
There were no planets. The measurements were false.
Because of the vast distances involved in detecting exoplanets, it's not uncommon for an exoplanet signature to really just be nothing.How it's possible when you said "false positive" for the b, c and d planet ?
// Filename: GJ_625_BC.sc
// JackDole 2017.08.19 16:49:04
// Put this in 'addons\catalogs\stars'
// http://simbad.u-strasbg.fr/simbad/sim-id?Ident=gl+625&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id
//------------------------------------------------------------------------------
RemoveStar "Gliese 625/AC+54 1646-56/HIP 80459"
StarBarycenter "GJ 625 system"
{
RA 16 25 24.6232
Dec 54 18 14.762
Dist 6.490135
}
//------------------------------------------------------------------------------