Registry · exoplanet

PDS 70 b

Exoplanet

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: 14h 08m 10.11s
Declination: −41° 23′ 52.9″
Galactic l, b: 318.06, 19.21
Magnitude V: 12.03
Distance: 113.06 pc

Planet

NASA Exoplanet Archive, composite parameters

Host star	PDS 70 · K7
Discovery	Imaging, 2018 · Paranal Observatory
Orbital period	43,500 d
Semi-major axis	20.8 au
Eccentricity	0.17
Radius	21.97 R⊕ · 1.96 R♃
Mass	1,017.1 M⊕ · 3.2 M♃
Density	0.527 g/cm³
Equilibrium temperature	1,392 K
System distance	113.06 pc

Recorded parameters

1 quantity with a single published value

Parameter	Value	Unit	Uncertainty	As published	Source	Reference
Orbital period	43,500	d		Imaging	NASA Exoplanet Archive	Keppler et al. 2018

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 3 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
1,017.051	M_earth	± 1,049	Imaging	NASA Exoplanet Archive	Wang et al. 2021	2021
953.49	M_earth	± 317.8	Imaging	NASA Exoplanet Archive	Wang et al. 2020	2020
2,542.64	M_earth	± 1,907	Imaging	NASA Exoplanet Archive	Keppler et al. 2018	2018

Radius 3 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
21.9696	R_earth	± 2.242	Imaging	NASA Exoplanet Archive	Wang et al. 2021	2021
30.48848	R_earth	± 2.242	Imaging	NASA Exoplanet Archive	Wang et al. 2020	2020
14.5717	R_earth		Imaging	NASA Exoplanet Archive	Keppler et al. 2018	2018

Semi-major axis 5 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
20.8	au	± 0.6	Imaging	NASA Exoplanet Archive	Wang et al. 2021	2021
20	au	± 2	Imaging	NASA Exoplanet Archive	Wang et al. 2020	2020
20.6	au	± 1.2	Imaging	NASA Exoplanet Archive	Haffert et al. 2019	2019
22	au		Imaging	NASA Exoplanet Archive	Keppler et al. 2018	2018
22.2	au	± 6.2	Imaging	NASA Exoplanet Archive	Müller et al. 2018	2018

Eccentricity 3 values

Value	Uncertainty	Band / method	Source	Reference	Year
0.17	± 0.06	Imaging	NASA Exoplanet Archive	Wang et al. 2021	2021
0.19	± 0.15	Imaging	NASA Exoplanet Archive	Wang et al. 2020	2020
0.03	± 0.22	Imaging	NASA Exoplanet Archive	Müller et al. 2018	2018

Equilibrium temperature 3 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
1,392	K	± 82	Imaging	NASA Exoplanet Archive	Wang et al. 2021	2021
1,204	K	± 26	Imaging	NASA Exoplanet Archive	Wang et al. 2020	2020
1,200	K	± 200	Imaging	NASA Exoplanet Archive	Keppler et al. 2018	2018

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
PDS 70	Star	0.003074″	—
PDS 70 c	Exoplanet	0.003074″	12.03
CD-40 8434	TTauri*	0.5921″	12.18
CD-40 8434b	Planet	0.5921″	—
CD-40 8434c	Planet	0.5921″	—
PDS 70d	Planet Candidate	0.5921″	—

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/pds-70-b · Registry entry updated 2026-08-14.