UPSA Object Registry
Registry · exoplanet

K2-25 b

Exoplanet 112 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
04h 13m 05.74s
Declination
+15° 14′ 51.7″
Galactic l, b
178.26, -25.29
Magnitude V
16.21
Distance
44.956 pc

Also known as

1 identifiers

K2-25b

Planet

NASA Exoplanet Archive, composite parameters
Host starK2-25 · M4.5V
DiscoveryTransit, 2015 · K2
Orbital period3.48456 d
Semi-major axis0.0287 au
Eccentricity0.428
Radius3.44 R⊕ · 0.306 R♃
Mass24.5 M⊕ · 0.07709 M♃
Density3.31 g/cm³
Equilibrium temperature494 K
System distance44.956 pc

Recorded parameters

2 quantities with a single published value
ParameterValueUnitUncertainty As publishedSourceReference
Mass 24.5 M_earth ± 5.7 Transit NASA Exoplanet Archive Stefansson et al. 2020
Semi-major axis 0.0287 au ± 0.0012 Transit NASA Exoplanet Archive Stefansson et al. 2020

Published measurements

4 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.

Radius 4 values

ValueUnitUncertainty Band / methodSourceReferenceYear
3.4492 R_earth ± 0.1099 Transit NASA Exoplanet Archive Thao et al. 2020 2020
3.44 R_earth ± 0.12 Transit NASA Exoplanet Archive Stefansson et al. 2020 2020
3.43 R_earth ± 0.95 Transit NASA Exoplanet Archive Mann et al. 2016 2016
4.208319 R_earth ± 1.285 Transit NASA Exoplanet Archive ExoFOP 2015

Orbital period 7 values

ValueUnitUncertainty Band / methodSourceReferenceYear
3.484562 d ± 6.40e-07 Transit NASA Exoplanet Archive Kokori et al. 2023 2023
3.484563 d ± 9.00e-07 Transit NASA Exoplanet Archive Kokori et al. 2022 2022
3.484563 d ± 9.70e-07 Transit NASA Exoplanet Archive Thao et al. 2020 2020
3.484564 d ± 6.00e-07 Transit NASA Exoplanet Archive Stefansson et al. 2020 2020
3.4843 d Transit NASA Exoplanet Archive Rizzuto et al. 2017 2017
3.484552 d ± 3.10e-05 Transit NASA Exoplanet Archive Mann et al. 2016 2016
3.484554 d ± 4.62e-06 Transit NASA Exoplanet Archive ExoFOP 2015

Eccentricity 4 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.27 ± 0.16 Transit NASA Exoplanet Archive Kokori et al. 2023 2023
0.27 ± 0.163 Transit NASA Exoplanet Archive Thao et al. 2020 2020
0.428 ± 0.05 Transit NASA Exoplanet Archive Stefansson et al. 2020 2020
0.27 ± 0.16 Transit NASA Exoplanet Archive Mann et al. 2016 2016

Equilibrium temperature 2 values

ValueUnitUncertainty Band / methodSourceReferenceYear
494 K ± 11 Transit NASA Exoplanet Archive Stefansson et al. 2020 2020
447.81 K Transit NASA Exoplanet Archive ExoFOP 2015

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
K2-25 HighPM* 1.92″ 15.56
UCAC4 526-007974 RGB* 217.4″ 13.63
HD 285602 Star 400.1″ 11.88
BSD 72-352 Star 414.2″ 12.24
LP 474-179 WhiteDwarf 507.8″ —

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/k2-25-b · Registry entry updated 2026-08-14.