Key parameters at a glance
- A radius of 12.50 Earth radii
- A mass of 104.00 Earth masses
- Surface gravity around 0.67 g
- An orbital period of 237.600 days
- Semi-major axis 0.6800 AU
- Distance from Earth 134.81 light-years
- Earth Similarity Index 0.263
- Travel time at Voyager 1 speed 2,377,444 years
1 sibling around BD-08 2823
BD-08 2823 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| BD-08 2823 b | Unclassified | — | 2,948.49 | 5.600 | — | 2009 |
| BD-08 2823 c this | Gas Giant | 12.50 | 104.00 | 237.600 | — | 2009 |
BD-08 2823 c Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1235of 1771
top 69.7%
This planet
12.50R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | BD-08 2823 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.50 | 11.21 |
| Mass (M⊕) | 1.00 | 104.00 | 317.83 |
| Density (g/cm³) | 5.51 | 0.29 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.67 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 104.000 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HIP
HIP 49067
TIC
TIC 33355302
Gaia DR2
Gaia DR2 3770419611540574080
Gaia DR3
Gaia DR3 3770419611540574080
System
BD-08 2823
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 237.60 Earth days (65.1% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.6800 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.263
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Hebrard et al. 2010Instrument
HARPS Spectrograph
Publication
2010-03
Observation locale
Ground
Discovery cohort
Planets confirmed in 2009 at La Silla Observatory (12 shown).
Host System: BD-08 2823
Spectral Class
K-type orange
Effective Temperature
4,746 K — cooler than the Sun (5,778 K)
Estimated Age
4.50 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.710 R☉
Stellar Mass
0.740 M☉
Metallicity [Fe/H]
-0.07
Extended Stellar Properties
Surface gravity (log g)
4.130 dex
Stellar density
3.318 g/cm³
Systemic radial velocity
53.35 km/s
Rotational v·sin i
1.40 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
24.164 mas
Total Proper Motion
376.379 mas/yr
PM Right Ascension
-375.52 mas/yr
PM Declination
25.46 mas/yr
Galactic Cartesian (pc)
x = -0.856 · y = 0.490 · z = -0.165
Equatorial (J2000)
RA 150.19720° · Dec -9.51657°
Galactic ℓ, b
248.495° · 34.755°
Ecliptic λ, β
155.832° · -20.284°
HTM-20 index
-1585389109
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