Registry · exoplanet

WASP-47 d

Exoplanet 65 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-47d

Planet

NASA Exoplanet Archive, composite parameters

Host star	WASP-47
Discovery	Transit, 2015 · K2
Orbital period	9.0305 d
Semi-major axis	0.085 au
Eccentricity	0.001
Radius	3.65 R⊕ · 0.3256 R♃
Mass	15.5 M⊕ · 0.04877 M♃
Density	1.8 g/cm³
Equilibrium temperature	885 K
System distance	264.78 pc

Recorded parameters

1 quantity with a single published value

Parameter	Value	Unit	Uncertainty	As published	Source	Reference
Equilibrium temperature	885	K	± 26	Transit	NASA Exoplanet Archive	Howard et al. 2025

Published measurements

5 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 7 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
13.3	M_earth	± 1.5	Transit	NASA Exoplanet Archive	Howard et al. 2025	2025
15.5	M_earth	± 0.7	Transit	NASA Exoplanet Archive	Nascimbeni et al. 2023	2023
14.2	M_earth	± 1.3	Transit	NASA Exoplanet Archive	Bryant & Bayliss 2022	2022
13.1	M_earth	± 1.5	Transit	NASA Exoplanet Archive	Vanderburg et al. 2017	2017
16.8	M_earth	± 12	Transit	NASA Exoplanet Archive	Almenara et al. 2016	2016
15.2	M_earth	± 7	Transit	NASA Exoplanet Archive	Becker et al. 2015	2015
10.4	M_earth	± 8.4	Transit	NASA Exoplanet Archive	Dai et al. 2015	2015

Radius 10 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
3.58	R_earth	± 0.32	Transit	NASA Exoplanet Archive	Howard et al. 2025	2025
3.65	R_earth	± 0.03	Transit	NASA Exoplanet Archive	Nascimbeni et al. 2023	2023
3.567	R_earth	± 0.045	Transit	NASA Exoplanet Archive	Bryant & Bayliss 2022	2022
3.3	R_earth	± 0.1	Transit	NASA Exoplanet Archive	Adams et al. 2021	2021
3.576	R_earth	± 0.046	Transit	NASA Exoplanet Archive	Vanderburg et al. 2017	2017
3.06	R_earth		Transit	NASA Exoplanet Archive	Vanderburg et al. 2016	2016
3.18	R_earth	± 0.68	Transit	NASA Exoplanet Archive	Crossfield et al. 2016	2016
3.71	R_earth	± 0.82	Transit	NASA Exoplanet Archive	Almenara et al. 2016	2016
3.63	R_earth	± 0.14	Transit	NASA Exoplanet Archive	Becker et al. 2015	2015
3.6	R_earth	± 0.13	Transit	NASA Exoplanet Archive	Dai et al. 2015	2015

Orbital period 11 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
9.03101	d	± 0.00037	Transit	NASA Exoplanet Archive	Howard et al. 2025	2025
9.030521	d	± 7.53e-06	Transit	NASA Exoplanet Archive	Bourrier et al. 2023	2023
9.030501	d	± 1.30e-05	Transit	NASA Exoplanet Archive	Nascimbeni et al. 2023	2023
9.03055	d	± 8.00e-05	Transit	NASA Exoplanet Archive	Bryant & Bayliss 2022	2022
9.028052	d	± 6.50e-05	Transit	NASA Exoplanet Archive	Adams et al. 2021	2021
9.03077	d	± 0.00017	Transit	NASA Exoplanet Archive	Vanderburg et al. 2017	2017
9.030542	d		Transit	NASA Exoplanet Archive	Vanderburg et al. 2016	2016
9.03164	d	± 0.00064	Transit	NASA Exoplanet Archive	Crossfield et al. 2016	2016
9.095	d	± 0.014	Transit	NASA Exoplanet Archive	Almenara et al. 2016	2016
9.03081	d	± 0.00019	Transit	NASA Exoplanet Archive	Becker et al. 2015	2015
9.03079	d	± 0.00017	Transit	NASA Exoplanet Archive	Dai et al. 2015	2015

Semi-major axis 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.085	au	± 0.0027	Transit	NASA Exoplanet Archive	Crossfield et al. 2016	2016
0.088	au	± 0.019	Transit	NASA Exoplanet Archive	Almenara et al. 2016	2016

Eccentricity 5 values

Value	Uncertainty	Band / method	Source	Reference	Year
0.01	± 0.011	Transit	NASA Exoplanet Archive	Bourrier et al. 2023	2023
0.001	± 0.0008	Transit	NASA Exoplanet Archive	Nascimbeni et al. 2023	2023
0.01	± 0.011	Transit	NASA Exoplanet Archive	Bryant & Bayliss 2022	2022
0.014		Transit	NASA Exoplanet Archive	Vanderburg et al. 2017	2017
0.006	± 0.0098	Transit	NASA Exoplanet Archive	Almenara et al. 2016	2016

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
WASP-47 b	Exoplanet	0″	11.94
WASP-47 c	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-d · Registry entry updated 2026-08-14.