Discovery Method
Radial Velocity
Consistent across records
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ExoplanetDetail
55 Cnc d
Host star 55 Cnc • 4799 d orbit
Records
12
archive rows
Discovery
2002
Radial Velocity
Radius
—
default parameter set
Mass
1214.1 M⊕
default parameter set
55 Cnc
temperature unconstrained
Canonical Summary
Adopted planet values from the default parameter set
Values come from the archive's default parameter set. Missing values stay missing. Ranges and counts describe all source rows.
Selected source: Moutou et al. 2026
Host Star
55 Cnc
Stable across source rows
Discovery Year
2002
Stable across source rows
Orbital Period
4799 day
4517.4 to 5574.2
Semi-Major Axis
5.60 au
5.26 to 5.96
Mass
1214.1 Mearth
909.0 to 1287.2
Provenance
Underlying measurements and references
Evidence Summary
Rows
12
Refs
12
Methods
1
Discoverystable
Facilitystable
Perioddisputed
Massdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2002 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 4909 day | — | 1121.9 Mearth | — | Endl et al. 2012 |
| 2002 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 4545 day | — | 918.5 Mearth | — | Naef et al. 2004 |
| 2002 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 5370 day | — | 1220.4 Mearth | — | Wright et al. 2009 |
| 2002 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 5360 day | — | 1287.2 Mearth | — | Marcy et al. 2002 |
| 2002 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 4517.4 day | — | 1243.4 Mearth | — | McArthur et al. 2004 |
| 2002 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 4867 day | — | 1226.8 Mearth | — | Nelson et al. 2014 |
| 2002 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 4825 day | — | 1232.5 Mearth | — | Baluev 2015 |
| 2002 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 4799 day | — | 1214.1 Mearth | — | Moutou et al. 2026 |
| 2002 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 4982 day | — | 1062 Mearth | — | Harada et al. 2025 |
| 2002 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 5574.2 day | — | 991.6 Mearth | — | Bourrier et al. 2018 |
| 2002 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 5218 day | — | 1218.8 Mearth | — | Fischer et al. 2008 |
| 2002 | Radial Velocity | Lick Observatory | 3.0 m C. Donald Shane Telescope | 4820 day | — | 909.0 Mearth | — | Rosenthal et al. 2021 |