UPSA Object Registry
Registry · deep sky

HAT-P-2

Star F8
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
16h 20m 36.34s
Declination
+41° 02′ 52.7″
Galactic l, b
65.021, 45.23
Distance
127.77 pc

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 10 values

ValueUnitUncertainty Band / methodSourceReferenceYear
1.33 M_sun ± 0.03 NASA Exoplanet Archive de Beurs et al. 2023 2023
1.33 M_sun ± 0.03 NASA Exoplanet Archive Ment et al. 2018 2018
1.93 M_sun ± 0.49 NASA Exoplanet Archive Stassun et al. 2017 2017
1.36 M_sun ± 0.04 NASA Exoplanet Archive Bonomo et al. 2017 2017
1.36 M_sun ± 0.04 NASA Exoplanet Archive Knutson et al. 2014 2014
1.36 M_sun ± 0.04 NASA Exoplanet Archive Pal et al. 2010 2010
1.279 M_sun ± 0.046 NASA Exoplanet Archive Southworth 2010 2010
1.308 M_sun ± 0.088 NASA Exoplanet Archive Torres et al. 2008 2008
1.298 M_sun ± 0.062 NASA Exoplanet Archive Loeillet et al. 2008 2008
1.298 M_sun ± 0.062 NASA Exoplanet Archive Bakos et al. 2007 2007

Radius 9 values

ValueUnitUncertainty Band / methodSourceReferenceYear
1.39 R_sun ± 0.09 NASA Exoplanet Archive Ment et al. 2018 2018
1.71 R_sun ± 0.06 NASA Exoplanet Archive Stassun et al. 2017 2017
1.64 R_sun ± 0.09 NASA Exoplanet Archive Bonomo et al. 2017 2017
1.64 R_sun ± 0.09 NASA Exoplanet Archive Pal et al. 2010 2010
1.68 R_sun ± 0.15 NASA Exoplanet Archive Southworth 2010 2010
1.506 R_sun ± 0.13 NASA Exoplanet Archive Torres et al. 2008 2008
1.416 R_sun ± 0.04 NASA Exoplanet Archive Loeillet et al. 2008 2008
1.7 R_sun ± 0.07 NASA Exoplanet Archive ExoFOP 2007
1.474 R_sun ± 0.042 NASA Exoplanet Archive Bakos et al. 2007 2007

Effective temperature 9 values

ValueUnitUncertainty Band / methodSourceReferenceYear
6,380 K NASA Exoplanet Archive Ment et al. 2018 2018
6,412 K ± 1 NASA Exoplanet Archive Stassun et al. 2017 2017
6,290 K ± 60 NASA Exoplanet Archive Bonomo et al. 2017 2017
6,300 K NASA Exoplanet Archive Salz et al. 2015 2015
6,290 K ± 60 NASA Exoplanet Archive Pal et al. 2010 2010
6,290 K ± 60 NASA Exoplanet Archive Southworth 2010 2010
6,290 K ± 110 NASA Exoplanet Archive Torres et al. 2008 2008
6,412.8 K ± 106.4 NASA Exoplanet Archive ExoFOP 2007
6,290 K ± 110 NASA Exoplanet Archive Bakos et al. 2007 2007

Related objects

ObjectTypeRelation
HAT-P-2 b Exoplanethost
HAT-P-2 c Exoplanethost

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
HAT-P-2 c Exoplanet 0″ 8.72
HAT-P-2 b Exoplanet 0″ 8.72
HD 147506 Star 0.4768″ 8.69
HD 147506c Planet 0.4768″ —
HD 147506b Planet 0.4768″ —
2MASX J16203923+4058536 GtowardsCl 241.7″ —
SDSS J162043.25+410658.8 QSO 258.3″ —
BD+41 2695 HighPM* 362.5″ 9
HD 147586 Star 367.5″ 8.19
SDSS J162003.35+410245.3 QSO 373.3″ —
SDSS J162037.29+405505.2 QSO 467.5″ —

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/hat-p-2 · Registry entry updated 2026-08-14.