UPSA Object Registry
Registry · exoplanet

Kepler-1121 b

Exoplanet 19 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 51m 08.77s
Declination
+47° 53′ 10.2″
Galactic l, b
81.686, 10.63
Magnitude V
12.14
Distance
482.05 pc

Also known as

1 identifiers

Kepler-1121b

Planet

NASA Exoplanet Archive, composite parameters
Host starKepler-1121 · F8
DiscoveryTransit, 2016 · Kepler
Orbital period13.1514 d
Semi-major axis0.11818 au
Eccentricity0
Radius1.91 R⊕ · 0.1704 R♃
Mass4.31 M⊕ · 0.0136 M♃
Density3.4 g/cm³
Equilibrium temperature1,008 K
System distance482.05 pc

Published measurements

5 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.

Radius 8 values

ValueUnitUncertainty Band / methodSourceReferenceYear
1.679 R_earth ± 0.077 Transit NASA Exoplanet Archive Berger et al. 2018 2018
1.711 R_earth ± 0.15 Transit NASA Exoplanet Archive Fulton & Petigura 2018 2018
1.87 R_earth ± 0.35 Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2016
1.91 R_earth ± 0.48 Transit NASA Exoplanet Archive Morton et al. 2016 2016
1.53 R_earth ± 0.55 Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2016
1.7 R_earth ± 0.97 Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2016
1.7 R_earth ± 0.97 Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2016
1.7 R_earth ± 0.97 Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2016

Orbital period 10 values

ValueUnitUncertainty Band / methodSourceReferenceYear
13.15108 d ± 3.66e-05 Transit NASA Exoplanet Archive Gajdoš et al. 2019 2019
13.15141 d ± 5.86e-05 Transit NASA Exoplanet Archive Fulton & Petigura 2018 2018
13.1514 d ± 7.98e-05 Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2016
13.15141 d ± 5.86e-05 Transit NASA Exoplanet Archive Morton et al. 2016 2016
13.1514 d ± 7.98e-05 Transit NASA Exoplanet Archive Q1-Q17 DR25 Supplemental KOI Table 2016
13.15127 d ± 0.00019 Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2016
13.15141 d ± 5.86e-05 Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2016
13.15141 d ± 5.86e-05 Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2016
13.1515 d ± 6.68e-06 Transit NASA Exoplanet Archive Holczer et al. 2016 2016
13.15141 d ± 5.86e-05 Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2016

Semi-major axis 6 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.11818 au ± 0.00053 Transit NASA Exoplanet Archive Fulton & Petigura 2018 2018
0.1187 au Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2016
0.115 au Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2016
0.1154 au Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2016
0.1154 au Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2016
0.1154 au Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2016

Eccentricity 5 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0 Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2016
0 Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2016
0 Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2016
0 Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2016
0 Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2016

Equilibrium temperature 5 values

ValueUnitUncertainty Band / methodSourceReferenceYear
1,008 K Transit NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2016
981 K Transit NASA Exoplanet Archive Q1-Q8 KOI Table 2016
987 K Transit NASA Exoplanet Archive Q1-Q16 KOI Table 2016
987 K Transit NASA Exoplanet Archive Q1-Q12 KOI Table 2016
987 K Transit NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2016

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
Kepler-1121 Eruptive* 0.1128″ 12.14
UCAC4 690-072358 Star 81.35″ 13.56
2MASS J19511715+4754025 Star 99.16″ —
2MASS J19511809+4752356 Star 99.85″ —
UCAC4 690-072340 ** 108.3″ 13.94
[DCO2008] T-Cyg1-16956 EclBin 108.6″ —
ZTF J195102.73+475023.0 EclBin 177.9″ —
TYC 3561-1148-1 Star 188.5″ 11.36
2MASS J19505014+4752437 Star 189.3″ —
UCAC4 690-072467 RGB* 214.9″ 13.52
Kepler-550 Star 223.6″ —

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-1121-b · Registry entry updated 2026-08-14.