Registry · exoplanet

HAT-P-5 b

Exoplanet 73 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: 18h 17m 37.33s
Declination: +36° 37′ 17.3″
Galactic l, b: 63.937, 22.15
Magnitude V: 11.95
Distance: 303.34 pc

Also known as

1 identifiers

HAT-P-5b

Planet

NASA Exoplanet Archive, composite parameters

Host star	HAT-P-5 · G1V
Discovery	Transit, 2007 · HATNet
Orbital period	2.78849 d
Semi-major axis	0.04073 au
Eccentricity	0
Radius	13.563 R⊕ · 1.21 R♃
Mass	311.47 M⊕ · 0.98 M♃
Density	0.6684 g/cm³
Equilibrium temperature	1,517 K
System distance	303.34 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 6 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
336.8981	M_earth	± 34.96	Transit	NASA Exoplanet Archive	Wallack et al. 2021	2021
324.1866	M_earth	± 31.78	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
311.4734	M_earth	± 63.57	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
336.8981	M_earth	± 34.96	Transit	NASA Exoplanet Archive	Southworth et al. 2012	2012
336.8998	M_earth	± 34.96	Transit	NASA Exoplanet Archive	Torres et al. 2008	2008
336.89	M_earth	± 34.96	Transit	NASA Exoplanet Archive	Bakos et al. 2007	2007

Radius 8 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
14.03364	R_earth	± 0.482	Transit	NASA Exoplanet Archive	Wallack et al. 2021	2021
13.5741	R_earth	± 0.2914	Transit	NASA Exoplanet Archive	Gajdo&scaron; et al. 2021	2021
14.05609	R_earth	± 0.5717	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
13.56289	R_earth	± 1.121	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
14.03364	R_earth	± 0.482	Transit	NASA Exoplanet Archive	Southworth et al. 2012	2012
14.05609	R_earth	± 0.5717	Transit	NASA Exoplanet Archive	Torres et al. 2008	2008
14.12	R_earth	± 0.56	Transit	NASA Exoplanet Archive	Bakos et al. 2007	2007
13.94326	R_earth	± 0.7794	Transit	NASA Exoplanet Archive	ExoFOP	2007

Orbital period 12 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
2.788473	d	± 1.50e-07	Transit	NASA Exoplanet Archive	Kokori et al. 2023	2023
2.788491	d	± 2.30e-05	Transit	NASA Exoplanet Archive	Patel & Espinoza 2022	2022
2.788473	d	± 1.90e-07	Transit	NASA Exoplanet Archive	Ivshina & Winn 2022	2022
2.788473	d	± 5.00e-07	Transit	NASA Exoplanet Archive	Kokori et al. 2022	2022
2.788474	d	± 5.20e-07	Transit	NASA Exoplanet Archive	Wallack et al. 2021	2021
2.788473	d	± 4.00e-07	Transit	NASA Exoplanet Archive	Gajdo&scaron; et al. 2021	2021
2.788474	d	± 5.20e-07	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
2.78849	d	± 2.50e-05	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
2.788474	d	± 5.20e-07	Transit	NASA Exoplanet Archive	Southworth et al. 2012	2012
2.788491	d		Transit	NASA Exoplanet Archive	Torres et al. 2008	2008
2.788491	d	± 2.50e-05	Transit	NASA Exoplanet Archive	Bakos et al. 2007	2007
2.788472	d	± 1.01e-06	Transit	NASA Exoplanet Archive	ExoFOP	2007

Semi-major axis 5 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.04097	au	± 0.00097	Transit	NASA Exoplanet Archive	Gajdo&scaron; et al. 2021	2021
0.04073	au	± 0.0005	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
0.04079	au	± 0.0008	Transit	NASA Exoplanet Archive	Southworth et al. 2012	2012
0.04071	au	± 0.00049	Transit	NASA Exoplanet Archive	Torres et al. 2008	2008
0.04075	au	± 0.00076	Transit	NASA Exoplanet Archive	Bakos et al. 2007	2007

Eccentricity 4 values

Value	Band / method	Source	Reference	Year
0.072	Transit	NASA Exoplanet Archive	Wallack et al. 2021	2021
0.072	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
0	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
0	Transit	NASA Exoplanet Archive	Bakos et al. 2007	2007

Equilibrium temperature 4 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
1,517	K	± 37	Transit	NASA Exoplanet Archive	Wallack et al. 2021	2021
1,517	K	± 29	Transit	NASA Exoplanet Archive	Southworth et al. 2012	2012
1,539	K	± 33	Transit	NASA Exoplanet Archive	Torres et al. 2008	2008
1,377.4	K		Transit	NASA Exoplanet Archive	ExoFOP	2007

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
HAT-P-5	Star	0.2063″	11.95

Provenance

where this card came from

Archive	Read at (UTC)	Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/hat-p-5-b · Registry entry updated 2026-08-14.