UPSA Object Registry
Registry · exoplanet

HD 168443 b

Exoplanet 101 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
18h 20m 03.84s
Declination
−09° 35′ 48.1″
Galactic l, b
20.814, 2.507
Magnitude V
6.921
Distance
39.624 pc

Also known as

1 identifiers

HD 168443b

Planet

NASA Exoplanet Archive, composite parameters
Host starHD 168443 · G6V
DiscoveryRadial Velocity, 1998 · W. M. Keck Observatory
Orbital period58.1119 d
Semi-major axis0.292 au
Eccentricity0.53
Radius12.6 R⊕ · 1.13 R♃
Mass2,424.4 M⊕ · 7.628 M♃
Density6.66 g/cm³
Equilibrium temperature641.03 K
System distance39.624 pc

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 7 values

ValueUnitUncertainty Band / methodSourceReferenceYear
2,571.232 M_earth ± 76.28 Radial Velocity NASA Exoplanet Archive An et al. 2025 2025
2,424.395 M_earth ± 192.6 Radial Velocity NASA Exoplanet Archive Feng et al. 2022 2022
2,517.201 M_earth ± 47.67 Radial Velocity NASA Exoplanet Archive Rosenthal et al. 2021 2021
2,434.157 M_earth ± 30.99 Radial Velocity NASA Exoplanet Archive Pilyavsky et al. 2011 2011
2,545.818 M_earth ± 206.6 Radial Velocity NASA Exoplanet Archive Wright et al. 2009 2009
2,548.89 M_earth ± 206.6 Radial Velocity NASA Exoplanet Archive Wright et al. 2007 2007
2,377.27 M_earth ± 85.81 Radial Velocity NASA Exoplanet Archive Wittenmyer et al. 2007 2007

Orbital period 7 values

ValueUnitUncertainty Band / methodSourceReferenceYear
58.11164 d ± 0.0004 Radial Velocity NASA Exoplanet Archive An et al. 2025 2025
58.11187 d ± 0.00024 Radial Velocity NASA Exoplanet Archive Feng et al. 2022 2022
58.11159 d ± 0.00011 Radial Velocity NASA Exoplanet Archive Rosenthal et al. 2021 2021
58.11247 d ± 0.0003 Radial Velocity NASA Exoplanet Archive Pilyavsky et al. 2011 2011
58.11212 d ± 0.00048 Radial Velocity NASA Exoplanet Archive Wright et al. 2009 2009
58.11289 d ± 0.00086 Radial Velocity NASA Exoplanet Archive Wright et al. 2007 2007
58.1112 d ± 0.0009 Radial Velocity NASA Exoplanet Archive Wittenmyer et al. 2007 2007

Semi-major axis 7 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.3006 au ± 0.0045 Radial Velocity NASA Exoplanet Archive An et al. 2025 2025
0.292 au ± 0.011 Radial Velocity NASA Exoplanet Archive Feng et al. 2022 2022
0.2977 au ± 0.0029 Radial Velocity NASA Exoplanet Archive Rosenthal et al. 2021 2021
0.2931 au ± 0.00181 Radial Velocity NASA Exoplanet Archive Pilyavsky et al. 2011 2011
0.3 au ± 0.017 Radial Velocity NASA Exoplanet Archive Wright et al. 2009 2009
0.3 au ± 0.017 Radial Velocity NASA Exoplanet Archive Wright et al. 2007 2007
0.29 au ± 0.005 Radial Velocity NASA Exoplanet Archive Wittenmyer et al. 2007 2007

Eccentricity 7 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.5288 ± 0.002 Radial Velocity NASA Exoplanet Archive An et al. 2025 2025
0.53 ± 0.002 Radial Velocity NASA Exoplanet Archive Feng et al. 2022 2022
0.5313 ± 0.00062 Radial Velocity NASA Exoplanet Archive Rosenthal et al. 2021 2021
0.52883 ± 0.00103 Radial Velocity NASA Exoplanet Archive Pilyavsky et al. 2011 2011
0.5295 ± 0.0011 Radial Velocity NASA Exoplanet Archive Wright et al. 2009 2009
0.5286 ± 0.0032 Radial Velocity NASA Exoplanet Archive Wright et al. 2007 2007
0.53 ± 0.001 Radial Velocity NASA Exoplanet Archive Wittenmyer et al. 2007 2007

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
HD 168443 c Exoplanet 0″ 6.921
HD 168443 HighPM* 3.751″ 6.92
OGLE GD-LPV-17629 Mira 103.2″ —
OGLE GD-LPV-17624 Mira 161.1″ —
OGLE GD-LPV-17632 Mira 193.4″ —
LS IV -09 5 Star 318.4″ 11.35
ATO J275.0615-09.7094 RRLyrae 436.7″ —
OGLE GD-RRLYR-10550 RRLyrae 461″ —
UBC 573 OpenCluster 492.1″ —
OGLE GD-LPV-17653 Mira 508.7″ —

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-168443-b · Registry entry updated 2026-08-14.