Key parameters at a glance
- A radius of 14.00 Earth radii
- A mass of 214.00 Earth masses
- Surface gravity around 1.09 g
- An orbital period of 1,891.000 days
- Semi-major axis 2.6300 AU
- Distance from Earth 77.40 light-years
- Earth Similarity Index 0.277
- Travel time at Voyager 1 speed 1,365,031 years
1 sibling around BD-210397
BD-210397 b 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-210397 b this | Gas Giant | 14.00 | 214.00 | 1,891.000 | — | 2023 |
| BD-210397 c | Gas Giant | 12.90 | 1,525.58 | 6,240.000 | — | 2023 |
BD-210397 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#415of 1771
top 23.4%
This planet
14.00R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | BD-210397 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.00 | 11.21 |
| Mass (M⊕) | 1.00 | 214.00 | 317.83 |
| Density (g/cm³) | 5.51 | 0.43 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.09 | 2.53 |
| Insolation (S⊕) | 1.00 | 0.02 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 214.000 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HIP
HIP 10337
TIC
TIC 268804174
Gaia DR2
Gaia DR2 5124636303346779008
Gaia DR3
Gaia DR3 5124636303346779008
System
BD-210397
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 5.18 Earth years on a mildly elliptical path at a mean orbital distance of 2.6300 AU.
Eq. Temperature
—
Insolation (S⊕)
0.02
Earth = 1.00
Earth Similarity (ESI)
0.277
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Frensch et al. 2023Instrument
HARPS Spectrograph
Publication
2023-06
Observation locale
Ground
Discovery cohort
Planets confirmed in 2023 at La Silla Observatory (12 shown).
Host System: BD-210397
Spectral Class
K-type orange
Effective Temperature
4,051 K — cooler than the Sun (5,778 K)
Estimated Age
6.20 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.747 R☉
Stellar Mass
0.679 M☉
Metallicity [Fe/H]
0.12
Extended Stellar Properties
Surface gravity (log g)
4.670 dex
Stellar density
2.239 g/cm³
Rotational v·sin i
1.00 km/s
Activity index (log R'HK)
-4.430
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 7 bands
Astrometric Data
Parallax
42.108 mas
Total Proper Motion
379.601 mas/yr
PM Right Ascension
375.48 mas/yr
PM Declination
55.81 mas/yr
Galactic Cartesian (pc)
x = 0.779 · y = 0.512 · z = -0.362
Equatorial (J2000)
RA 33.30242° · Dec -21.19621°
Galactic ℓ, b
199.699° · -70.456°
Ecliptic λ, β
22.689° · -32.368°
HTM-20 index
-1551739179
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