Registry · exoplanet

HAT-P-41 b

Exoplanet 88 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 49m 17.44s
Declination: +04° 40′ 20.7″
Galactic l, b: 43.841, -10.63
Magnitude V: 11.37
Distance: 348.19 pc

Also known as

1 identifiers

HAT-P-41b

Planet

NASA Exoplanet Archive, composite parameters

Host star	HAT-P-41
Discovery	Transit, 2012 · HATNet
Orbital period	2.69405 d
Semi-major axis	0.04258 au
Eccentricity	0
Radius	22.978 R⊕ · 2.05 R♃
Mass	378.22 M⊕ · 1.19 M♃
Density	0.204 g/cm³
Equilibrium temperature	1,941 K
System distance	348.19 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 4 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
378.2177	M_earth	± 190.7	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
252.6748	M_earth	± 17.8	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
254.264	M_earth	± 31.78	Transit	NASA Exoplanet Archive	Johnson et al. 2017	2017
254.253	M_earth	± 32.42	Transit	NASA Exoplanet Archive	Hartman et al. 2012	2012

Radius 5 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
22.97845	R_earth	± 5.604	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
18.88716	R_earth	± 0.8519	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
18.88716	R_earth	± 0.8519	Transit	NASA Exoplanet Archive	Johnson et al. 2017	2017
18.25138	R_earth	± 0.7861	Transit	NASA Exoplanet Archive	ExoFOP	2012
18.887	R_earth	± 0.852	Transit	NASA Exoplanet Archive	Hartman et al. 2012	2012

Orbital period 7 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
2.69405	d	± 9.60e-07	Transit	NASA Exoplanet Archive	Kokori et al. 2023	2023
2.69405	d	± 8.00e-07	Transit	NASA Exoplanet Archive	Kokori et al. 2022	2022
2.69405	d	± 4.00e-06	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
2.694047	d	± 4.00e-06	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
2.694047	d	± 4.00e-06	Transit	NASA Exoplanet Archive	Johnson et al. 2017	2017
2.694035	d	± 8.06e-05	Transit	NASA Exoplanet Archive	ExoFOP	2012
2.694047	d	± 4.00e-06	Transit	NASA Exoplanet Archive	Hartman et al. 2012	2012

Semi-major axis 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.04258	au	± 0.00047	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
0.0426	au	± 0.0005	Transit	NASA Exoplanet Archive	Hartman et al. 2012	2012

Eccentricity 3 values

Value	Band / method	Source	Reference	Year
0	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
0.22	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
0	Transit	NASA Exoplanet Archive	Hartman et al. 2012	2012

Equilibrium temperature 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
1,800.75	K		Transit	NASA Exoplanet Archive	ExoFOP	2012
1,941	K	± 38	Transit	NASA Exoplanet Archive	Hartman et al. 2012	2012

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
HAT-P-41	Star	0.1127″	11.36
** WOL 7B	Star	3.506″	—

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-41-b · Registry entry updated 2026-08-14.