UPSA Object Registry
Registry · exoplanet

Kepler-4 b

Exoplanet 105 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 02m 27.71s
Declination
+50° 08′ 08.8″
Galactic l, b
80.37, 18.82
Magnitude V
12.29
Distance
487.92 pc

Also known as

1 identifiers

Kepler-4b

Planet

NASA Exoplanet Archive, composite parameters
Host starKepler-4 · G0
DiscoveryTransit, 2009 · Kepler
Orbital period3.21346 d
Semi-major axis0.0456 au
Eccentricity0
Radius4.002 R⊕ · 0.357 R♃
Mass24.472 M⊕ · 0.077 M♃
Density1.91 g/cm³
Equilibrium temperature1,650 K
System distance487.92 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 2 values

ValueUnitUncertainty Band / methodSourceReferenceYear
23.83725 M_earth ± 4.132 Transit NASA Exoplanet Archive Southworth 2011 2011
24.472 M_earth ± 3.814 Transit NASA Exoplanet Archive Borucki et al. 2010 2010

Radius 11 values

ValueUnitUncertainty Band / methodSourceReferenceYear
4.076 R_earth ± 0.107 Transit NASA Exoplanet Archive Fulton & Petigura 2018 2018
4.078 R_earth ± 0.181 Transit NASA Exoplanet Archive Berger et al. 2018 2018
4.23 R_earth ± 0.14 Transit NASA Exoplanet Archive Morton et al. 2016 2016
4.124912 R_earth ± 0.8295 Transit NASA Exoplanet Archive Southworth 2011 2011
4.002 R_earth ± 0.213 Transit NASA Exoplanet Archive Borucki et al. 2010 2010
3.72 R_earth ± 0.49 Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2009
4.14 R_earth ± 0.11 Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2009
4.13 R_earth ± 0.26 Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2009
4.14 R_earth ± 0.11 Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2009
4.154955 R_earth ± 1.931 Transit NASA Exoplanet Archive ExoFOP 2009
4.14 R_earth ± 0.11 Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2009

Orbital period 13 values

ValueUnitUncertainty Band / methodSourceReferenceYear
3.213663 d ± 1.03e-06 Transit NASA Exoplanet Archive Gajdoš et al. 2019 2019
3.213669 d ± 1.12e-06 Transit NASA Exoplanet Archive Fulton & Petigura 2018 2018
3.213667 d ± 3.20e-07 Transit NASA Exoplanet Archive Holczer et al. 2016 2016
3.213669 d ± 1.12e-06 Transit NASA Exoplanet Archive Morton et al. 2016 2016
3.213658 d ± 3.80e-05 Transit NASA Exoplanet Archive Southworth 2011 2011
3.21346 d ± 0.00022 Transit NASA Exoplanet Archive Borucki et al. 2010 2010
3.213664 d ± 4.20e-06 Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2009
3.213669 d ± 1.12e-06 Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2009
3.213669 d ± 1.09e-06 Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2009
3.213669 d ± 1.12e-06 Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2009
3.213669 d ± 1.09e-06 Transit NASA Exoplanet Archive Q1-Q17 DR25 Supplemental KOI Table 2009
3.213564 d ± 4.19e-05 Transit NASA Exoplanet Archive ExoFOP 2009
Show the remaining 1
ValueUnitUncertainty Band / methodSourceReferenceYear
3.213669 d ± 1.12e-06 Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2009

Semi-major axis 8 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.04465 au ± 0.00065 Transit NASA Exoplanet Archive Fulton & Petigura 2018 2018
0.0449 au ± 0.0025 Transit NASA Exoplanet Archive Southworth 2011 2011
0.0456 au ± 0.0009 Transit NASA Exoplanet Archive Borucki et al. 2010 2010
0.044 au Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2009
0.0439 au Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2009
0.044 au Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2009
0.0439 au Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2009
0.0439 au Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2009

Eccentricity 6 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0 Transit NASA Exoplanet Archive Borucki et al. 2010 2010
0 Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2009
0 Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2009
0 Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2009
0 Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2009
0 Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2009

Equilibrium temperature 8 values

ValueUnitUncertainty Band / methodSourceReferenceYear
1,620 K ± 140 Transit NASA Exoplanet Archive Southworth 2011 2011
1,650 K ± 200 Transit NASA Exoplanet Archive Borucki et al. 2010 2010
1,386 K Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2009
1,507 K Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2009
1,515 K Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2009
1,507 K Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2009
1,550.14 K Transit NASA Exoplanet Archive ExoFOP 2009
1,507 K Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2009

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
Kepler-4 Eruptive* 0.1193″ 12.29
Kepler-968 c Exoplanet 90.44″ 14.63
Kepler-968 b Exoplanet 90.44″ 14.63
KOI-1833 d Exoplanet 90.44″ 14.63
Kepler-968 Star 90.45″ —
KOI-1833.02 Planet 90.45″ —
2MASS J19022989+5006131 Star 117.6″ —
2MASS J19024301+5008273 Star 148.4″ —
2MASS J19022137+5011367 Star 216.7″ —
2MASS J19022260+5004340 Star 220.3″ —
KOI-8230 Star 278.2″ —

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-4-b · Registry entry updated 2026-08-14.