UPSA Object Registry
Registry · deep sky

Kepler-42

HighPM* SIMBAD PM* M4V 132 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 28m 52.57s
Declination
+44° 37′ 09.0″
Galactic l, b
76.919, 12.55
Parallax
24.934 mas
Proper motion
93.07, -417.4 mas/yr

Also known as

1 identifiers

Kepler-42

Published measurements

3 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 12 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.132 M_sun ± 0.039 NASA Exoplanet Archive Ofir et al. 2025 2025
0.144 M_sun ± 0.007 NASA Exoplanet Archive Mann et al. 2017 2017
0.22 M_sun ± 0.052 NASA Exoplanet Archive Morton et al. 2016 2016
0.143 M_sun ± 0.073 NASA Exoplanet Archive Mann et al. 2013 2013
0.13 M_sun ± 0.05 NASA Exoplanet Archive Muirhead et al. 2012 2012
0.14 M_sun ± 0.02 NASA Exoplanet Archive Muirhead et al. 2012 2012
0.13 M_sun ± 0.05 NASA Exoplanet Archive Q1-Q16 KOI Table 2011
0.146463 M_sun ± 0.02003 NASA Exoplanet Archive TICv8 2011
0.617 M_sun NASA Exoplanet Archive Q1-Q8 KOI Table 2011
0.13 M_sun ± 0.05 NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2011
0.13 M_sun ± 0.05 NASA Exoplanet Archive Q1-Q12 KOI Table 2011
0.132 M_sun ± 0.039 NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2011

Radius 13 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.174 R_sun ± 0.005 NASA Exoplanet Archive Ofir et al. 2025 2025
0.174 R_sun ± 0.005 NASA Exoplanet Archive Berger et al. 2018 2018
0.175 R_sun ± 0.006 NASA Exoplanet Archive Mann et al. 2017 2017
0.24 R_sun ± 0.043 NASA Exoplanet Archive Morton et al. 2016 2016
0.189 R_sun ± 0.055 NASA Exoplanet Archive Mann et al. 2013 2013
0.17 R_sun ± 0.04 NASA Exoplanet Archive Muirhead et al. 2012 2012
0.16 R_sun ± 0.02 NASA Exoplanet Archive Muirhead et al. 2012 2012
0.17 R_sun ± 0.04 NASA Exoplanet Archive Q1-Q16 KOI Table 2011
0.176562 R_sun ± 0.005253 NASA Exoplanet Archive TICv8 2011
0.681 R_sun NASA Exoplanet Archive Q1-Q8 KOI Table 2011
0.17 R_sun ± 0.04 NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2011
0.17 R_sun ± 0.04 NASA Exoplanet Archive Q1-Q12 KOI Table 2011
Show the remaining 1
ValueUnitUncertainty Band / methodSourceReferenceYear
0.148 R_sun ± 0.039 NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2011

Effective temperature 12 values

ValueUnitUncertainty Band / methodSourceReferenceYear
3,204 K ± 64 NASA Exoplanet Archive Berger et al. 2018 2018
3,258 K ± 21 NASA Exoplanet Archive Mann et al. 2017 2017
3,169 K ± 47.59 NASA Exoplanet Archive Morton et al. 2016 2016
3,241 K ± 58 NASA Exoplanet Archive Mann et al. 2013 2013
3,068 K ± 174 NASA Exoplanet Archive Muirhead et al. 2012 2012
3,203 K ± 56 NASA Exoplanet Archive Muirhead et al. 2012 2012
3,068 K ± 174 NASA Exoplanet Archive Q1-Q16 KOI Table 2011
3,357 K ± 157 NASA Exoplanet Archive TICv8 2011
4,188 K NASA Exoplanet Archive Q1-Q8 KOI Table 2011
3,068 K ± 174 NASA Exoplanet Archive Q1-Q17 DR24 KOI Table 2011
3,068 K ± 174 NASA Exoplanet Archive Q1-Q12 KOI Table 2011
3,292 K ± 44 NASA Exoplanet Archive Q1-Q17 DR25 KOI Table 2011

Related objects

ObjectTypeRelation
Kepler-42 b Exoplanethost
Kepler-42 c Exoplanethost
Kepler-42 d Exoplanethost

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
Kepler-42 d Exoplanet 6.629″ 16.7
Kepler-42 c Exoplanet 6.629″ 16.7
Kepler-42 b Exoplanet 6.629″ 16.7
2MASS J19284798+4439074 Star 128.2″ —
UCAC4 674-072272 RGB* 149.4″ 12.88
UCAC4 674-072189 HorBranch* 174.8″ 11.78
BD+44 3149 RGB* 187.1″ 10.08
2MASS J19291000+4437431 Star 189.3″ —
TYC 3146-802-1 delSctV* 191.1″ 10.46
KOI-3450 Star 195.3″ —
2MASS J19285973+4440110 Star 197.3″ —

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-42-4019486 · Registry entry updated 2026-08-14.