Registry · exoplanet

WASP-47 e

Exoplanet 101 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-47e

Planet

NASA Exoplanet Archive, composite parameters

Host star	WASP-47
Discovery	Transit, 2015 · K2
Orbital period	0.78961 d
Semi-major axis	0.01673 au
Eccentricity	0
Radius	1.83 R⊕ · 0.1633 R♃
Mass	9 M⊕ · 0.02832 M♃
Density	6.29 g/cm³
Equilibrium temperature	1,992 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	1,992	K	± 59	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 8 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
7.06	M_earth	± 0.71	Transit	NASA Exoplanet Archive	Howard et al. 2025	2025
9	M_earth	± 0.6	Transit	NASA Exoplanet Archive	Nascimbeni et al. 2023	2023
6.77	M_earth	± 0.57	Transit	NASA Exoplanet Archive	Bryant & Bayliss 2022	2022
6.91	M_earth	± 0.81	Transit	NASA Exoplanet Archive	Dai et al. 2019	2019
6.83	M_earth	± 0.66	Transit	NASA Exoplanet Archive	Vanderburg et al. 2017	2017
9.1	M_earth	± 5.5	Transit	NASA Exoplanet Archive	Almenara et al. 2016	2016
22	M_earth		Transit	NASA Exoplanet Archive	Becker et al. 2015	2015
12.2	M_earth	± 3.7	Transit	NASA Exoplanet Archive	Dai et al. 2015	2015

Radius 12 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
1.79	R_earth	± 0.18	Transit	NASA Exoplanet Archive	Howard et al. 2025	2025
1.83	R_earth	± 0.02	Transit	NASA Exoplanet Archive	Nascimbeni et al. 2023	2023
1.808	R_earth	± 0.026	Transit	NASA Exoplanet Archive	Bryant & Bayliss 2022	2022
1.8	R_earth	± 0.1	Transit	NASA Exoplanet Archive	Adams et al. 2021	2021
1.773	R_earth	± 0.049	Transit	NASA Exoplanet Archive	Dai et al. 2019	2019
1.81	R_earth	± 0.027	Transit	NASA Exoplanet Archive	Vanderburg et al. 2017	2017
1.5	R_earth		Transit	NASA Exoplanet Archive	Vanderburg et al. 2016	2016
1.64	R_earth	± 0.36	Transit	NASA Exoplanet Archive	Crossfield et al. 2016	2016
1.79	R_earth	± 0.13	Transit	NASA Exoplanet Archive	Adams et al. 2016	2016
1.82	R_earth	± 0.4	Transit	NASA Exoplanet Archive	Almenara et al. 2016	2016
1.829	R_earth	± 0.07	Transit	NASA Exoplanet Archive	Becker et al. 2015	2015
1.817	R_earth	± 0.065	Transit	NASA Exoplanet Archive	Dai et al. 2015	2015

Orbital period 13 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.78957	d	± 3.40e-05	Transit	NASA Exoplanet Archive	Howard et al. 2025	2025
0.7895933	d	± 4.40e-06	Transit	NASA Exoplanet Archive	Bourrier et al. 2023	2023
0.78961	d	± 3.00e-05	Transit	NASA Exoplanet Archive	Nascimbeni et al. 2023	2023
0.7895933	d	± 4.40e-06	Transit	NASA Exoplanet Archive	Bryant & Bayliss 2022	2022
0.789655	d	± 4.00e-05	Transit	NASA Exoplanet Archive	Adams et al. 2021	2021
0.79	d		Transit	NASA Exoplanet Archive	Dai et al. 2019	2019
0.789592	d	± 1.20e-05	Transit	NASA Exoplanet Archive	Vanderburg et al. 2017	2017
0.789613	d		Transit	NASA Exoplanet Archive	Vanderburg et al. 2016	2016
0.789518	d	± 6.00e-05	Transit	NASA Exoplanet Archive	Crossfield et al. 2016	2016
0.789693	d	± 8.20e-05	Transit	NASA Exoplanet Archive	Adams et al. 2016	2016
0.789636	d	± 1.70e-05	Transit	NASA Exoplanet Archive	Almenara et al. 2016	2016
0.789597	d	± 1.30e-05	Transit	NASA Exoplanet Archive	Becker et al. 2015	2015

Show the remaining 1

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.789593	d	± 1.20e-05	Transit	NASA Exoplanet Archive	Dai et al. 2015	2015

Semi-major axis 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.01673	au	± 0.00053	Transit	NASA Exoplanet Archive	Crossfield et al. 2016	2016
0.0173	au	± 0.0038	Transit	NASA Exoplanet Archive	Almenara et al. 2016	2016

Eccentricity 3 values

Value	Uncertainty	Band / method	Source	Reference	Year
0		Transit	NASA Exoplanet Archive	Bourrier et al. 2023	2023
0		Transit	NASA Exoplanet Archive	Nascimbeni et al. 2023	2023
0.03	± 0.036	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 d	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-e · Registry entry updated 2026-08-14.