UPSA Object Registry
Registry · exoplanet

HD 75289 b

Exoplanet 93 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
08h 47m 40.36s
Declination
−41° 44′ 16.0″
Galactic l, b
262.21, 1.089
Magnitude V
6.35
Distance
29.116 pc

Also known as

1 identifiers

HD 75289b

Planet

NASA Exoplanet Archive, composite parameters
Host starHD 75289 · F9VFe+0.3
DiscoveryRadial Velocity, 1999 · La Silla Observatory
Orbital period3.50927 d
Semi-major axis0.05 au
Eccentricity0.03
Radius14.2 R⊕ · 1.27 R♃
Mass155.74 M⊕ · 0.49 M♃
Density0.299 g/cm³
Equilibrium temperature1,260 K
System distance29.116 pc

Recorded parameters

1 quantity with a single published value
ParameterValueUnitUncertainty As publishedSourceReference
Equilibrium temperature 1,260 K Radial Velocity NASA Exoplanet Archive Udry et al. 2000

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.

Mass 4 values

ValueUnitUncertainty Band / methodSourceReferenceYear
155.7367 M_earth ± 9.535 Radial Velocity NASA Exoplanet Archive Stassun et al. 2017 2017
148.4266 M_earth ± 13.03 Radial Velocity NASA Exoplanet Archive Butler et al. 2006 2006
146.2018 M_earth Radial Velocity NASA Exoplanet Archive Butler et al. 2001 2001
133.4886 M_earth Radial Velocity NASA Exoplanet Archive Udry et al. 2000 2000

Orbital period 4 values

ValueUnitUncertainty Band / methodSourceReferenceYear
3.50927 d ± 6.40e-05 Radial Velocity NASA Exoplanet Archive Stassun et al. 2017 2017
3.509267 d ± 6.40e-05 Radial Velocity NASA Exoplanet Archive Butler et al. 2006 2006
3.508 d ± 0.001 Radial Velocity NASA Exoplanet Archive Butler et al. 2001 2001
3.5098 d ± 0.0007 Radial Velocity NASA Exoplanet Archive Udry et al. 2000 2000

Semi-major axis 4 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.05 au ± 0 Radial Velocity NASA Exoplanet Archive Stassun et al. 2017 2017
0.0482 au ± 0.0028 Radial Velocity NASA Exoplanet Archive Butler et al. 2006 2006
0.047 au Radial Velocity NASA Exoplanet Archive Butler et al. 2001 2001
0.046 au Radial Velocity NASA Exoplanet Archive Udry et al. 2000 2000

Eccentricity 4 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.03 ± 0.03 Radial Velocity NASA Exoplanet Archive Stassun et al. 2017 2017
0.034 ± 0.029 Radial Velocity NASA Exoplanet Archive Butler et al. 2006 2006
0.014 ± 0.005 Radial Velocity NASA Exoplanet Archive Butler et al. 2001 2001
0.024 ± 0.021 Radial Velocity NASA Exoplanet Archive Udry et al. 2000 2000

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
HD 75289 HighPM* 3.548″ 6.36
HD 75289B HighPM* 22.87″ —
UCAC4 242-028550 Star 242.5″ 13.34
Gaia DR2 5524994840942440448 Star 248.8″ —
OGLE GD-CEP-279 ClassicalCep 254.5″ 18.57
Gaia DR3 5524981200126635136 Star 279.5″ —
Gaia DR3 5524995734295625984 YSO Candidate 294.1″ —
2MASS J08470637-4143106 YSO Candidate 386.1″ —
CD-41 4492 YSO Candidate 406.4″ 10.05
Cl* Trumpler 10 STOCK 450 Star 430.6″ 12.7
GES J08480700-4138145 Star 468.7″ —

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/hd-75289-b · Registry entry updated 2026-08-14.