UPSA Object Registry
Registry · exoplanet

Kepler-20 d

Exoplanet 79 papers
harvesting The full record is being pulled from the archives right now — measurement tables, the Gaia row, catalogue photometry. This page will fill itself in.
Right ascension
19h 10m 47.52s
Declination
+42° 20′ 18.9″
Galactic l, b
73.377, 14.57
Magnitude V
12.61
Distance
282.56 pc

Also known as

1 identifiers

Kepler-20d

Planet

NASA Exoplanet Archive, composite parameters
Host starKepler-20 · G5V
DiscoveryTransit, 2011 · Kepler
Orbital period77.6115 d
Semi-major axis0.3474 au
Eccentricity0.082
Radius2.606 R⊕ · 0.2325 R♃
Mass13.4 M⊕ · 0.04216 M♃
Density4.1 g/cm³
Equilibrium temperature430 K
System distance282.56 pc

Published measurements

6 quantities measured more than once
One object can carry a dozen published estimates of the same quantity. The register keeps them side by side rather than picking a winner — the citation is part of the value.

Mass 4 values

ValueUnitUncertainty Band / methodSourceReferenceYear
12.94676 M_earth ± 4.212 Transit NASA Exoplanet Archive Weiss et al. 2024 2024
13.4 M_earth ± 3.7 Transit NASA Exoplanet Archive Bonomo et al. 2023 2023
10.07 M_earth ± 3.97 Transit NASA Exoplanet Archive Buchhave et al. 2016 2016
20.1 M_earth Transit NASA Exoplanet Archive Gautier et al. 2012 2012

Radius 12 values

ValueUnitUncertainty Band / methodSourceReferenceYear
2.492 R_earth ± 0.069 Transit NASA Exoplanet Archive Weiss et al. 2024 2024
2.606 R_earth ± 0.053 Transit NASA Exoplanet Archive Bonomo et al. 2023 2023
2.492 R_earth ± 0.069 Transit NASA Exoplanet Archive Fulton & Petigura 2018 2018
2.488 R_earth ± 0.119 Transit NASA Exoplanet Archive Berger et al. 2018 2018
2.63 R_earth ± 0.21 Transit NASA Exoplanet Archive Morton et al. 2016 2016
2.744 R_earth ± 0.073 Transit NASA Exoplanet Archive Buchhave et al. 2016 2016
2.75 R_earth ± 0.17 Transit NASA Exoplanet Archive Gautier et al. 2012 2012
2.62 R_earth ± 0.46 Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2011
2.59 R_earth ± 0.29 Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2011
2.62 R_earth ± 0.46 Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2011
2.62 R_earth ± 0.46 Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2011
2.84 R_earth ± 0.23 Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2011

Orbital period 14 values

ValueUnitUncertainty Band / methodSourceReferenceYear
77.6116 d Transit NASA Exoplanet Archive Weiss et al. 2024 2024
77.61146 d ± 9.60e-05 Transit NASA Exoplanet Archive Bonomo et al. 2023 2023
77.61146 d ± 9.59e-05 Transit NASA Exoplanet Archive Gajdoš et al. 2019 2019
77.6116 d ± 0.0001357 Transit NASA Exoplanet Archive Fulton & Petigura 2018 2018
77.6116 d ± 0.0001357 Transit NASA Exoplanet Archive Morton et al. 2016 2016
77.61154 d ± 2.91e-06 Transit NASA Exoplanet Archive Holczer et al. 2016 2016
77.6113 d ± 0.0001231 Transit NASA Exoplanet Archive Buchhave et al. 2016 2016
77.61184 d ± 0.00015 Transit NASA Exoplanet Archive Gautier et al. 2012 2012
77.6116 d ± 0.0001357 Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2011
77.61144 d ± 0.0001536 Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2011
77.61144 d ± 0.0001536 Transit NASA Exoplanet Archive Q1-Q17 DR25 Supplemental KOI Table 2011
77.6116 d ± 0.0001357 Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2011
Show the remaining 2
ValueUnitUncertainty Band / methodSourceReferenceYear
77.6116 d ± 0.0001357 Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2011
77.61153 d ± 0.00023 Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2011

Semi-major axis 10 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.3490663 au Transit NASA Exoplanet Archive Weiss et al. 2024 2024
0.3474 au ± 0.0067 Transit NASA Exoplanet Archive Bonomo et al. 2023 2023
0.34921 au ± 0.00287 Transit NASA Exoplanet Archive Fulton & Petigura 2018 2018
0.3506 au ± 0.0081 Transit NASA Exoplanet Archive Buchhave et al. 2016 2016
0.3453 au ± 0.0041 Transit NASA Exoplanet Archive Gautier et al. 2012 2012
0.3411 au Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2011
0.3411 au Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2011
0.3411 au Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2011
0.3411 au Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2011
0.344 au Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2011

Eccentricity 8 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0 Transit NASA Exoplanet Archive Weiss et al. 2024 2024
0.082 Transit NASA Exoplanet Archive Bonomo et al. 2023 2023
0.6 Transit NASA Exoplanet Archive Gautier et al. 2012 2012
0 Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2011
0 Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2011
0 Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2011
0 Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2011
0 Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2011

Equilibrium temperature 8 values

ValueUnitUncertainty Band / methodSourceReferenceYear
430 K ± 6 Transit NASA Exoplanet Archive Bonomo et al. 2023 2023
401 K ± 13 Transit NASA Exoplanet Archive Buchhave et al. 2016 2016
369 K Transit NASA Exoplanet Archive Gautier et al. 2012 2012
397 K Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2011
397 K Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2011
397 K Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2011
397 K Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2011
397 K Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2011

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
Kepler-20 b Exoplanet 0″ 12.61
Kepler-20 g Exoplanet 0″ 12.61
Kepler-20 f Exoplanet 0″ 12.61
Kepler-20 e Exoplanet 0″ 12.61
Kepler-20 c Exoplanet 0″ 12.61
Kepler-20 Star 0.4242″ 12.63
TYC 3129-770-1 Star 19.17″ 11.56
TYC 3129-1100-1 RGB* 113.7″ 11.13
TYC 3129-518-1 HorBranch* 134.9″ 11.2
2MASS J19104137+4222179 Star 137.1″ —
2MASS J19103219+4221400 Star 188.2″ —

Provenance

where this card came from
ArchiveRead at (UTC)Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/kepler-20-d · Registry entry updated 2026-08-14.