Temperature
3543 K
3543 to 3897.9
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Stellar HostProfile
HD 285968
M2 • 9.47 pc
Records
14
literature rows
Planets
1
system count
References
14
distinct source labels
TIC: TIC 397354290HD: HD 285968HIP: HIP 21932
Approximate color
from effective temperature
Canonical Summary
Adopted host values from one source row
Values come from the row with the most populated summary measurements. Missing values stay missing. Ranges and counts describe all source rows.
Stellar source: Turnbull 2015 • System source: TICv8
Mass
0.43 Msun
0.43 to 0.51
Radius
0.46 Rsun
0.45 to 0.49
Luminosity
-1.40 log(Lsun)
-1.66 to -1.40
Distance
9.47 pc
single adopted value
Spectral Type
M2
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.46 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 285968
0.46 R☉
System Layout
Known planets
1 planets linked to this host
HD 285968 b
Radial Velocity
◌
Discovery
2008
Period
8.78 days
Radius
—
Mass
8.40 M⊕
Eq. Temp
450 K
HD 285968 and Its Planet
HD 285968 is an M2 star located 30.9 light-years from Earth. Its spectral type places it among the small, cool red dwarfs. The star holds a mass of 0.43 solar masses, a radius of 0.46 solar radii, and a temperature of 3540 K. Each of these values is smaller or cooler than the corresponding solar figure.
One planet orbits this host. HD 285968 b was discovered in 2008 by the radial velocity method, which detects the wobble a planet's gravity induces in its star. The planet has a minimum mass of 8.4 Earth masses, a lower bound on its true mass and larger than Earth's. Its orbital period is 8.78 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
14
Stellar refs
13
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 3543 | 0.43 | 0.46 | — | -1.40 | M2 | 9.47 | Turnbull 2015 | TICv8 |
| — | — | 0.46 | 0.44 | — | — | 9.47 | Takeda et al. 2007 | TICv8 |
| — | 0.50 | — | — | -1.66 | M2 V | 9.47 | Forveille et al. 2009 | TICv8 |
| — | — | — | — | — | — | 9.47 | Nidever et al. 2002 | TICv8 |
| 3543 | 0.48 | 0.49 | — | -1.47 | — | 9.47 | TICv8 | TICv8 |
| 3897.9 | — | — | — | — | — | 9.47 | Gaia DR2 | TICv8 |
| — | — | — | — | — | — | 9.47 | Duncan et al. 1991 | TICv8 |
| — | — | — | — | — | — | 9.47 | Wright et al. 2004 | TICv8 |
| — | — | — | 3.62 | — | — | 9.47 | Sanz-Forcada et al. 2010 | TICv8 |
| 3679 | 0.45 | 0.45 | — | -1.47 | M2 | 9.47 | von Braun et al. 2014 | TICv8 |
| 3703.5 | 0.51 | 0.48 | — | — | — | 9.47 | Rosenthal et al. 2021 | TICv8 |
| — | — | — | — | — | K5 | 9.47 | Nesterov et al. 1995 | TICv8 |
| — | — | — | — | — | M2 | 9.47 | Hawley et al. 1996 | TICv8 |
| — | — | — | — | — | — | 9.47 | Duncan et al. 1991 | TICv8 |