Registry · exoplanet

HD 189733 b

Exoplanet 1,630 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: 20h 00m 43.71s
Declination: +22° 42′ 35.2″
Galactic l, b: 60.962, -3.923
Magnitude V: 7.67
Distance: 19.764 pc

Also known as

1 identifiers

HD 189733b

Planet

NASA Exoplanet Archive, composite parameters

Host star	HD 189733 · K2V
Discovery	Radial Velocity, 2005 · Haute-Provence Observatory
Orbital period	2.21858 d
Semi-major axis	0.03126 au
Eccentricity	0
Radius	12.666 R⊕ · 1.13 R♃
Mass	359.15 M⊕ · 1.13 M♃
Density	0.943 g/cm³
Equilibrium temperature	1,209 K
System distance	19.764 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 11 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
369.6344	M_earth	± 11.44	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
371.8592	M_earth		Radial Velocity	NASA Exoplanet Archive	Paredes et al. 2021	2021
370.5898	M_earth	± 16.53	Radial Velocity	NASA Exoplanet Archive	Addison et al. 2019	2019
359.1479	M_earth	± 25.43	Radial Velocity	NASA Exoplanet Archive	Stassun et al. 2017	2017
356.9231	M_earth	± 14.3	Radial Velocity	NASA Exoplanet Archive	Bonomo et al. 2017	2017
362.3262	M_earth		Radial Velocity	NASA Exoplanet Archive	Sing et al. 2016	2016
369.303	M_earth	± 18.43	Radial Velocity	NASA Exoplanet Archive	Boyajian et al. 2015	2015
349.6	M_earth		Radial Velocity	NASA Exoplanet Archive	Salz et al. 2015	2015
365.5045	M_earth	± 12.4	Radial Velocity	NASA Exoplanet Archive	Southworth 2010	2010
363.582	M_earth	± 18.12	Radial Velocity	NASA Exoplanet Archive	Torres et al. 2008	2008
365.49	M_earth	± 12.71	Radial Velocity	NASA Exoplanet Archive	Bouchy et al. 2005	2005

Radius 10 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
12.54287	R_earth	± 0.4259	Radial Velocity	NASA Exoplanet Archive	Addison et al. 2019	2019
12.66617	R_earth	± 0.1121	Radial Velocity	NASA Exoplanet Archive	Stassun et al. 2017	2017
12.75584	R_earth	± 0.3026	Radial Velocity	NASA Exoplanet Archive	Bonomo et al. 2017	2017
12.77826	R_earth		Radial Velocity	NASA Exoplanet Archive	Sing et al. 2016	2016
13.63	R_earth	± 0.269	Radial Velocity	NASA Exoplanet Archive	Boyajian et al. 2015	2015
12.3	R_earth		Radial Velocity	NASA Exoplanet Archive	Salz et al. 2015	2015
12.90156	R_earth	± 0.4259	Radial Velocity	NASA Exoplanet Archive	Southworth 2010	2010
12.756	R_earth	± 0.303	Radial Velocity	NASA Exoplanet Archive	Torres et al. 2008	2008
13.30104	R_earth	± 0.9523	Radial Velocity	NASA Exoplanet Archive	ExoFOP	2005
14.12	R_earth	± 0.34	Radial Velocity	NASA Exoplanet Archive	Bouchy et al. 2005	2005

Orbital period 18 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
2.218575	d	± 3.00e-08	Radial Velocity	NASA Exoplanet Archive	Kokori et al. 2023	2023
2.218575	d	± 6.30e-08	Radial Velocity	NASA Exoplanet Archive	Ivshina & Winn 2022	2022
2.218575	d	± 1.40e-07	Radial Velocity	NASA Exoplanet Archive	Kokori et al. 2022	2022
2.218555	d	± 1.50e-05	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
2.218	d	± 0.001	Radial Velocity	NASA Exoplanet Archive	Paredes et al. 2021	2021
2.218577	d	± 9.00e-06	Radial Velocity	NASA Exoplanet Archive	Addison et al. 2019	2019
2.218576	d	± 1.50e-07	Radial Velocity	NASA Exoplanet Archive	Stassun et al. 2017	2017
2.218575	d	± 7.70e-08	Radial Velocity	NASA Exoplanet Archive	Bonomo et al. 2017	2017
2.22	d		Radial Velocity	NASA Exoplanet Archive	Sing et al. 2016	2016
2.218576	d	± 1.50e-07	Radial Velocity	NASA Exoplanet Archive	Cegla et al. 2016	2016
2.2	d		Radial Velocity	NASA Exoplanet Archive	Salz et al. 2015	2015
2.218575	d	± 7.70e-08	Radial Velocity	NASA Exoplanet Archive	Baluev et al. 2015	2015

Show the remaining 6

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
2.218573	d		Radial Velocity	NASA Exoplanet Archive	Di Gloria et al. 2015	2015
2.218576	d	± 1.50e-07	Radial Velocity	NASA Exoplanet Archive	Agol et al. 2010	2010
2.218576	d	± 8.00e-07	Radial Velocity	NASA Exoplanet Archive	Southworth 2010	2010
2.218573	d		Radial Velocity	NASA Exoplanet Archive	Torres et al. 2008	2008
2.218575	d	± 1.77e-07	Radial Velocity	NASA Exoplanet Archive	ExoFOP	2005
2.219	d	± 0.0005	Radial Velocity	NASA Exoplanet Archive	Bouchy et al. 2005	2005

Semi-major axis 9 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.03126	au	± 0.00036	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
0.031	au		Radial Velocity	NASA Exoplanet Archive	Paredes et al. 2021	2021
0.03106	au	± 0.00051	Radial Velocity	NASA Exoplanet Archive	Addison et al. 2019	2019
0.031	au	± 0.00059	Radial Velocity	NASA Exoplanet Archive	Bonomo et al. 2017	2017
0.031	au		Radial Velocity	NASA Exoplanet Archive	Salz et al. 2015	2015
0.0312	au		Radial Velocity	NASA Exoplanet Archive	Di Gloria et al. 2015	2015
0.03142	au	± 0.00052	Radial Velocity	NASA Exoplanet Archive	Southworth 2010	2010
0.03099	au	± 0.0006	Radial Velocity	NASA Exoplanet Archive	Torres et al. 2008	2008
0.0313	au	± 0.0004	Radial Velocity	NASA Exoplanet Archive	Bouchy et al. 2005	2005

Eccentricity 7 values

Value	Uncertainty	Band / method	Source	Reference	Year
0.027	± 0.021	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
0.028		Radial Velocity	NASA Exoplanet Archive	Paredes et al. 2021	2021
0		Radial Velocity	NASA Exoplanet Archive	Stassun et al. 2017	2017
0.0039		Radial Velocity	NASA Exoplanet Archive	Bonomo et al. 2017	2017
0		Radial Velocity	NASA Exoplanet Archive	Cegla et al. 2016	2016
0		Radial Velocity	NASA Exoplanet Archive	Salz et al. 2015	2015
0		Radial Velocity	NASA Exoplanet Archive	Bouchy et al. 2005	2005

Equilibrium temperature 7 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
1,209	K	± 11	Radial Velocity	NASA Exoplanet Archive	Addison et al. 2019	2019
1,201	K		Radial Velocity	NASA Exoplanet Archive	Barstow et al. 2017	2017
1,200	K		Radial Velocity	NASA Exoplanet Archive	Sing et al. 2016	2016
1,200	K		Radial Velocity	NASA Exoplanet Archive	Salz et al. 2015	2015
1,191	K	± 20	Radial Velocity	NASA Exoplanet Archive	Southworth 2010	2010
1,201	K	± 13	Radial Velocity	NASA Exoplanet Archive	Torres et al. 2008	2008
1,101.7	K		Radial Velocity	NASA Exoplanet Archive	ExoFOP	2005

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
HD 189733	BYDraV*	3.88″	7.648
HD 189733B	HighPM*	10.17″	—
2MASS J20003898+2242336	RGB*	65.42″	—
ATO J300.2216+22.7016	LongPeriodV*	134.3″	—
IRAS 19583+2235	Mira	159.6″	—
HD 345461	Star	176.5″	11.32
IRAS 19583+2231	LongPeriodV*	208.5″	—
2MASS J20002569+2242150	RGB*	250.1″	—
ZTF J200103.47+224118.3	EclBin	284.1″	—
2MASS J20004269+2247411	HorBranch*	306.4″	—
2MASS J20001906+2239432	RGB*	382″	—

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/hd-189733-b · Registry entry updated 2026-08-14.