Registry · exoplanet

TOI-849 b

Exoplanet 63 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: 01h 54m 51.79s
Declination: −29° 25′ 18.2″
Galactic l, b: 225.97, -75.86
Magnitude V: 11.98
Distance: 225.73 pc

Also known as

1 identifiers

TOI-849b

Planet

NASA Exoplanet Archive, composite parameters

Host star	TOI-849
Discovery	Transit, 2020 · Transiting Exoplanet Survey Satellite (TESS)
Orbital period	0.765548 d
Semi-major axis	0.0155 au
Eccentricity	0
Radius	3.64 R⊕ · 0.3247 R♃
Mass	41.8 M⊕ · 0.1315 M♃
Density	5.6 g/cm³
Equilibrium temperature	1,932 K
System distance	225.73 pc

Recorded parameters

1 quantity with a single published value

Parameter	Value	Unit	Uncertainty	As published	Source	Reference
Equilibrium temperature	1,932	K		Transit	NASA Exoplanet Archive	ExoFOP

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 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
41.8	M_earth	± 2.5	Transit	NASA Exoplanet Archive	Polanski et al. 2024	2024
39.09	M_earth	± 2.66	Transit	NASA Exoplanet Archive	Armstrong et al. 2020	2020

Radius 4 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
3.677173	R_earth	± 0.3265	Transit	NASA Exoplanet Archive	Lafarga et al. 2026	2026
3.64	R_earth	± 0.38	Transit	NASA Exoplanet Archive	Polanski et al. 2024	2024
3.444	R_earth	± 0.157	Transit	NASA Exoplanet Archive	Armstrong et al. 2020	2020
3.54139	R_earth	± 0.2457	Transit	NASA Exoplanet Archive	ExoFOP	2020

Orbital period 4 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.7655524	d	± 0.0001914	Transit	NASA Exoplanet Archive	Lafarga et al. 2026	2026
0.765548	d	± 5.30e-05	Transit	NASA Exoplanet Archive	Polanski et al. 2024	2024
0.7655241	d	± 2.62e-06	Transit	NASA Exoplanet Archive	Armstrong et al. 2020	2020
0.76566	d	± 0.00015	Transit	NASA Exoplanet Archive	ExoFOP	2020

Semi-major axis 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.0155	au	± 0.0003	Transit	NASA Exoplanet Archive	Polanski et al. 2024	2024
0.01598	au	± 0.00013	Transit	NASA Exoplanet Archive	Armstrong et al. 2020	2020

Eccentricity 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0			Transit	NASA Exoplanet Archive	Polanski et al. 2024	2024
0		± 0	Transit	NASA Exoplanet Archive	Armstrong et al. 2020	2020

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
TOI-849	HighPM*	1.179″	12.25
[VV2006] J015447.6-292456	QSO	58.25″	—
[VV2006] J015448.0-292853	QSO	219.8″	—
CD-30 666	HighPM*	291.8″	11.36
UCAC4 303-001967	Star	428.2″	12.73
TYC 6431-812-1	Star	445.4″	11.35
CD-30 658	HighPM*	460.6″	10.62
[VV2006] J015454.5-293339	QSO	502.3″	—

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/toi-849-b · Registry entry updated 2026-08-14.