Registry · exoplanet

WASP-47 b

Exoplanet 117 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: 22h 04m 48.74s
Declination: −12° 01′ 08.6″
Galactic l, b: 45.748, -48.19
Magnitude V: 11.94
Distance: 264.78 pc

Also known as

1 identifiers

WASP-47b

Planet

NASA Exoplanet Archive, composite parameters

Host star	WASP-47
Discovery	Transit, 2012 · SuperWASP
Orbital period	4.15915 d
Semi-major axis	0.052 au
Eccentricity	0.0006
Radius	12.86 R⊕ · 1.147 R♃
Mass	374 M⊕ · 1.177 M♃
Density	0.993 g/cm³
Equilibrium temperature	1,275 K
System distance	264.78 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 9 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
357	M_earth	± 11	Transit	NASA Exoplanet Archive	Howard et al. 2025	2025
374	M_earth	± 17	Transit	NASA Exoplanet Archive	Nascimbeni et al. 2023	2023
363.6	M_earth	± 7.3	Transit	NASA Exoplanet Archive	Bryant & Bayliss 2022	2022
363.1	M_earth	± 7.3	Transit	NASA Exoplanet Archive	Vanderburg et al. 2017	2017
383	M_earth	± 190	Transit	NASA Exoplanet Archive	Almenara et al. 2016	2016
359.1479	M_earth	± 19.07	Transit	NASA Exoplanet Archive	Neveu-VanMalle et al. 2015	2015
341	M_earth	± 73	Transit	NASA Exoplanet Archive	Becker et al. 2015	2015
370	M_earth	± 29	Transit	NASA Exoplanet Archive	Dai et al. 2015	2015
362.311	M_earth	± 15.89	Transit	NASA Exoplanet Archive	Hellier et al. 2012	2012

Radius 12 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
12.251	R_earth	± 0.043	Transit	NASA Exoplanet Archive	Howard et al. 2025	2025
12.86	R_earth	± 0.1	Transit	NASA Exoplanet Archive	Nascimbeni et al. 2023	2023
12.64	R_earth	± 0.15	Transit	NASA Exoplanet Archive	Bryant & Bayliss 2022	2022
13.18	R_earth	± 0.34	Transit	NASA Exoplanet Archive	Kruse et al. 2019	2019
12.63	R_earth	± 0.15	Transit	NASA Exoplanet Archive	Vanderburg et al. 2017	2017
10.5	R_earth		Transit	NASA Exoplanet Archive	Vanderburg et al. 2016	2016
12.3	R_earth	± 2.5	Transit	NASA Exoplanet Archive	Crossfield et al. 2016	2016
12.9	R_earth	± 2.8	Transit	NASA Exoplanet Archive	Almenara et al. 2016	2016
12.77	R_earth	± 0.44	Transit	NASA Exoplanet Archive	Becker et al. 2015	2015
12.71	R_earth	± 0.44	Transit	NASA Exoplanet Archive	Dai et al. 2015	2015
12.29768	R_earth	± 0.6811	Transit	NASA Exoplanet Archive	ExoFOP	2012
12.89	R_earth	± 0.448	Transit	NASA Exoplanet Archive	Hellier et al. 2012	2012

Orbital period 19 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
4.159152	d	± 1.30e-05	Transit	NASA Exoplanet Archive	Howard et al. 2025	2025
4.159149	d	± 6.00e-07	Transit	NASA Exoplanet Archive	Bourrier et al. 2023	2023
4.159151	d	± 4.00e-07	Transit	NASA Exoplanet Archive	Nascimbeni et al. 2023	2023
4.15915	d	± 6.30e-07	Transit	NASA Exoplanet Archive	Kokori et al. 2023	2023
4.159149	d	± 6.00e-07	Transit	NASA Exoplanet Archive	Bryant & Bayliss 2022	2022
4.159148	d	± 7.00e-07	Transit	NASA Exoplanet Archive	Ivshina & Winn 2022	2022
4.15915	d	± 1.00e-06	Transit	NASA Exoplanet Archive	Kokori et al. 2022	2022
4.15917	d	± 1.10e-05	Transit	NASA Exoplanet Archive	Kruse et al. 2019	2019
4.159129	d	± 4.20e-06	Transit	NASA Exoplanet Archive	Vanderburg et al. 2017	2017
4.159174	d		Transit	NASA Exoplanet Archive	Vanderburg et al. 2016	2016
4.159221	d	± 1.50e-05	Transit	NASA Exoplanet Archive	Crossfield et al. 2016	2016
4.16071	d	± 0.00038	Transit	NASA Exoplanet Archive	Almenara et al. 2016	2016

Show the remaining 7

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
4.158107	d		Transit	NASA Exoplanet Archive	Barros et al. 2016	2016
4.159141	d	± 7.20e-06	Transit	NASA Exoplanet Archive	Neveu-VanMalle et al. 2015	2015
4.159129	d	± 4.90e-06	Transit	NASA Exoplanet Archive	Becker et al. 2015	2015
4.159128	d	± 4.60e-06	Transit	NASA Exoplanet Archive	Dai et al. 2015	2015
4.1	d		Transit	NASA Exoplanet Archive	Sanchis-Ojeda et al. 2015	2015
4.159151	d	± 1.67e-06	Transit	NASA Exoplanet Archive	ExoFOP	2012
4.15914	d	± 7.20e-06	Transit	NASA Exoplanet Archive	Hellier et al. 2012	2012

Semi-major axis 4 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.0507	au	± 0.0016	Transit	NASA Exoplanet Archive	Crossfield et al. 2016	2016
0.052	au	± 0.011	Transit	NASA Exoplanet Archive	Almenara et al. 2016	2016
0.051	au	± 0.001	Transit	NASA Exoplanet Archive	Neveu-VanMalle et al. 2015	2015
0.052	au	± 0.0006	Transit	NASA Exoplanet Archive	Hellier et al. 2012	2012

Eccentricity 5 values

Value	Uncertainty	Band / method	Source	Reference	Year
0		Transit	NASA Exoplanet Archive	Bourrier et al. 2023	2023
0.0006	± 0.0005	Transit	NASA Exoplanet Archive	Nascimbeni et al. 2023	2023
0.0028	± 0.0042	Transit	NASA Exoplanet Archive	Almenara et al. 2016	2016
0.026		Transit	NASA Exoplanet Archive	Neveu-VanMalle et al. 2015	2015
0.11		Transit	NASA Exoplanet Archive	Hellier et al. 2012	2012

Equilibrium temperature 3 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
1,146	K	± 33	Transit	NASA Exoplanet Archive	Howard et al. 2025	2025
1,275	K	± 23	Transit	NASA Exoplanet Archive	Neveu-VanMalle et al. 2015	2015
1,155.7	K		Transit	NASA Exoplanet Archive	ExoFOP	2012

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
WASP-47 c	Exoplanet	0″	11.94
WASP-47 d	Exoplanet	0″	11.94
WASP-47 e	Exoplanet	0″	11.94
WASP-47	Star	0.6836″	11.99
TYC 5805-338-1	Star	220.8″	11.54
TYC 5805-739-1	RGB*	236.8″	11.56
UCAC4 391-132464	RGB*	440.9″	13.03
UCAC4 390-136713	Star	514.5″	12.05
HD 209646	Star	537.2″	9.98

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/wasp-47-b · Registry entry updated 2026-08-14.