Key parameters at a glance
- A radius of 13.00 Earth radii
- A mass of 1,321.53 Earth masses
- Surface gravity around 7.82 g
- An orbital period of 1,257.992 days
- Semi-major axis 2.2290 AU
- Distance from Earth 164.41 light-years
- Earth Similarity Index 0.418
- Travel time at Voyager 1 speed 2,899,422 years
Context from the literature
HD 73267 b is an extrasolar planet located approximately 164 light-years away. This planet was discovered on October 26, 2008 by Moutou et al. using the HARPS spectrograph on ESO's 3.6 meter telescope installed at La Silla Observatory in Atacama Desert, Chile. In 2022, the inclination and true mass of HD 73267 b were measured via astrometry.
Excerpted from Wikipedia · full article
1 sibling around HD 73267
HD 73267 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 |
|---|---|---|---|---|---|---|
| HD 73267 b this | Gas Giant | 13.00 | 1,321.53 | 1,257.992 | — | 2008 |
| HD 73267 c | Gas Giant | 12.80 | 1,630.78 | 17,071.780 | — | 2022 |
HD 73267 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#960of 1771
top 54.2%
This planet
13.00R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 73267 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.00 | 11.21 |
| Mass (M⊕) | 1.00 | 1,321.53 | 317.83 |
| Density (g/cm³) | 5.51 | 3.31 | 1.33 |
| Surface Gravity (g) | 1.00 | 7.82 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 1,321.531 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 984.320 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 73267
HIP
HIP 42202
TIC
TIC 11749208
Gaia DR2
Gaia DR2 5638825939745228544
Gaia DR3
Gaia DR3 5638825939745228544
System
HD 73267
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 3.44 Earth years on a mildly elliptical path at a mean orbital distance of 2.2290 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.418
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
Moutou et al. 2009Instrument
HARPS Spectrograph
Publication
2009-03
Observation locale
Ground
Discovery cohort
Planets confirmed in 2008 at La Silla Observatory (12 shown).
Host System: HD 73267
Spectral Class
K-type orange
Effective Temperature
5,387 K — cooler than the Sun (5,778 K)
Estimated Age
8.14 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.909 R☉
Stellar Mass
0.930 M☉
Metallicity [Fe/H]
0.03
Extended Stellar Properties
Surface gravity (log g)
4.447 dex
Stellar density
1.601 g/cm³
Systemic radial velocity
51.92 km/s
Rotational v·sin i
1.65 km/s
Rotation period
43.00 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
19.809 mas
Total Proper Motion
162.720 mas/yr
PM Right Ascension
-106.23 mas/yr
PM Declination
123.26 mas/yr
Galactic Cartesian (pc)
x = -0.520 · y = 0.640 · z = -0.566
Equatorial (J2000)
RA 129.07351° · Dec -34.45945°
Galactic ℓ, b
255.086° · 3.792°
Ecliptic λ, β
145.121° · -50.692°
HTM-20 index
-2054960447
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