UPSA Object Registry
Registry · exoplanet

K2-141 b

Exoplanet 114 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
23h 23m 40.09s
Declination
−01° 11′ 21.1″
Galactic l, b
80.199, -56.6
Magnitude V
11.45
Distance
61.874 pc

Also known as

1 identifiers

K2-141b

Planet

NASA Exoplanet Archive, composite parameters
Host starK2-141 · K7 V
DiscoveryTransit, 2018 · K2
Orbital period0.280324 d
Semi-major axis0.00747 au
Eccentricity0
Radius1.51 R⊕ · 0.1347 R♃
Mass4.97 M⊕ · 0.01564 M♃
Density7.93 g/cm³
Equilibrium temperature2,103 K
System distance61.874 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 4 values

ValueUnitUncertainty Band / methodSourceReferenceYear
4.97 M_earth ± 0.35 Transit NASA Exoplanet Archive Bonomo et al. 2023 2023
5.16 M_earth ± 0.35 Transit NASA Exoplanet Archive Dai et al. 2019 2019
5.08 M_earth ± 0.41 Transit NASA Exoplanet Archive Malavolta et al. 2018 2018
5.31 M_earth ± 0.46 Transit NASA Exoplanet Archive Barragán et al. 2018 2018

Radius 5 values

ValueUnitUncertainty Band / methodSourceReferenceYear
1.51 R_earth ± 0.05 Transit NASA Exoplanet Archive Bonomo et al. 2023 2023
1.493 R_earth ± 0.041 Transit NASA Exoplanet Archive Dai et al. 2019 2019
1.51 R_earth ± 0.05 Transit NASA Exoplanet Archive Malavolta et al. 2018 2018
1.54 R_earth ± 0.1 Transit NASA Exoplanet Archive Barragán et al. 2018 2018
1.64829 R_earth ± 0.1457 Transit NASA Exoplanet Archive ExoFOP 2018

Orbital period 5 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.2803244 d ± 1.50e-06 Transit NASA Exoplanet Archive Bonomo et al. 2023 2023
0.28 d Transit NASA Exoplanet Archive Dai et al. 2019 2019
0.2803244 d ± 1.50e-06 Transit NASA Exoplanet Archive Malavolta et al. 2018 2018
0.2803226 d ± 1.30e-06 Transit NASA Exoplanet Archive Barragán et al. 2018 2018
0.2803246 d ± 1.00e-07 Transit NASA Exoplanet Archive ExoFOP 2018

Semi-major axis 2 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.00747 au ± 0.0001 Transit NASA Exoplanet Archive Bonomo et al. 2023 2023
0.00716 au ± 0.00055 Transit NASA Exoplanet Archive Barragán et al. 2018 2018

Eccentricity 3 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0 Transit NASA Exoplanet Archive Bonomo et al. 2023 2023
0 Transit NASA Exoplanet Archive Malavolta et al. 2018 2018
0 Transit NASA Exoplanet Archive Barragán et al. 2018 2018

Equilibrium temperature 3 values

ValueUnitUncertainty Band / methodSourceReferenceYear
2,103 K ± 56 Transit NASA Exoplanet Archive Bonomo et al. 2023 2023
2,039 K ± 87 Transit NASA Exoplanet Archive Barragán et al. 2018 2018
2,211 K Transit NASA Exoplanet Archive ExoFOP 2018

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
K2-141 Star 0″ —
K2-141 c Exoplanet 0″ 11.45
StKM 1-2122 HighPM* 1.845″ 11.45
SDSS J232351.37-011342.6 QSO 220.6″ —
Anon J232348-0108 Galaxy 229.6″ —
[VFG2011] TDE2 Transient 229.6″ —
SN 2007jc Supernova 229.8″ —
ATO J350.8760-01.2387 RRLyrae 231.6″ 16.17
SDSS J232328.39-011519.5 QSO 296″ 20.23
SDSS J232358.22-010720.1 QSO 363.3″ —
SDSS J232319.62-010711.6 QSO 395.5″ —

Provenance

where this card came from
ArchiveRead at (UTC)Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/k2-141-b · Registry entry updated 2026-08-14.