Key parameters at a glance
- A radius of 13.10 Earth radii
- A mass of 1,103.18 Earth masses
- Surface gravity around 6.43 g
- An orbital period of 624.874 days
- Semi-major axis 1.4600 AU
- Distance from Earth 176.76 light-years
- Earth Similarity Index 0.407
- Travel time at Voyager 1 speed 3,117,195 years
1 sibling around HD 183263
HD 183263 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 183263 b this | Gas Giant | 13.10 | 1,103.18 | 624.874 | — | 2004 |
| HD 183263 c | Gas Giant | 12.50 | 2,958.98 | 4,667.978 | — | 2008 |
HD 183263 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#910of 1771
top 51.3%
This planet
13.10R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 183263 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.10 | 11.21 |
| Mass (M⊕) | 1.00 | 1,103.18 | 317.83 |
| Density (g/cm³) | 5.51 | 2.70 | 1.33 |
| Surface Gravity (g) | 1.00 | 6.43 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 1,103.182 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 183263
HIP
HIP 95740
TIC
TIC 134245358
Gaia DR2
Gaia DR2 4296208099222829568
Gaia DR3
Gaia DR3 4296208099222829568
System
HD 183263
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 1.71 Earth years on a highly eccentric trajectory at a mean orbital distance of 1.4600 AU.
Extended Orbital Architecture
RV semi-amplitude (K)
85.702 m/s
Transit mid-time (BJD)
2,456,925.2000
Long. of periastron (ω)
232.05°
Angular separation (arcsec)
26.90000
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.407
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
Marcy et al. 2005Instrument
HIRES Spectrometer
Publication
2005-01
Observation locale
Ground
Discovery cohort
Planets confirmed in 2004 at W. M. Keck Observatory (6 shown).
Host System: HD 183263
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,948 K — hotter than the Sun (5,778 K)
Estimated Age
8.13 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.230 R☉
Stellar Mass
1.060 M☉
Metallicity [Fe/H]
0.28
Extended Stellar Properties
Surface gravity (log g)
4.370 dex
Stellar density
0.694 g/cm³
Systemic radial velocity
-50.34 km/s
Rotational v·sin i
1.60 km/s
Activity index (log R'HK)
-5.110
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
18.423 mas
Total Proper Motion
37.419 mas/yr
PM Right Ascension
-19.13 mas/yr
PM Declination
-32.16 mas/yr
Galactic Cartesian (pc)
x = 0.372 · y = -0.917 · z = 0.145
Equatorial (J2000)
RA 292.10230° · Dec 8.35792°
Galactic ℓ, b
44.609° · -4.310°
Ecliptic λ, β
295.418° · 29.867°
HTM-20 index
-1407203443
Observation Record
Photometric series
1
RV measurements
3
Stellar spectra
2
Archive notes
1
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