Key parameters at a glance
- A radius of 12.40 Earth radii
- A mass of 3,305.42 Earth masses
- Surface gravity around 21.50 g
- An orbital period of 1,198.480 days
- Semi-major axis 2.0600 AU
- Distance from Earth 124.09 light-years
- Earth Similarity Index 0.377
- Travel time at Voyager 1 speed 2,188,390 years
BD+63 1405 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1298of 1771
top 73.2%
This planet
12.40R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | BD+63 1405 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.40 | 11.21 |
| Mass (M⊕) | 1.00 | 3,305.42 | 317.83 |
| Density (g/cm³) | 5.51 | 9.53 | 1.33 |
| Surface Gravity (g) | 1.00 | 21.50 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 3,305.415 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 1,258.600 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HIP
HIP 88617
TIC
TIC 233075841
Gaia DR2
Gaia DR2 2160951157908163968
Gaia DR3
Gaia DR3 2160951157908163968
System
BD+63 1405
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 3.28 Earth years on a highly eccentric trajectory at a mean orbital distance of 2.0600 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.377
0 = alien, 1 = Earth-identical
Detection Signatures
Radial velocity
Stellar wobble has been measured spectroscopically.
Astrometry
Positional wobble of the host star was measured.
Discovery Paper
Primary reference
Dalal et al. 2021Instrument
SOPHIE Spectrograph
Publication
2021-07
Observation locale
Ground
Discovery cohort
Planets confirmed in 2021 at Haute-Provence Observatory (11 shown).
Host System: BD+63 1405
Spectral Class
K-type orange
Effective Temperature
5,000 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.805 R☉
Stellar Mass
0.816 M☉
Metallicity [Fe/H]
-0.09
Extended Stellar Properties
Surface gravity (log g)
4.200 dex
Stellar density
2.300 g/cm³
Systemic radial velocity
-15.33 km/s
Rotational v·sin i
2.10 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
26.254 mas
Total Proper Motion
249.411 mas/yr
PM Right Ascension
-26.48 mas/yr
PM Declination
248.00 mas/yr
Galactic Cartesian (pc)
x = 0.011 · y = -0.443 · z = 0.896
Equatorial (J2000)
RA 271.39793° · Dec 63.67001°
Galactic ℓ, b
93.081° · 29.151°
Ecliptic λ, β
282.135° · 87.050°
HTM-20 index
1995106444
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