Key parameters at a glance
- A radius of 13.70 Earth radii
- A mass of 349.60 Earth masses
- Surface gravity around 1.86 g
- An orbital period of 493.700 days
- Semi-major axis 1.1600 AU
- Distance from Earth 68.70 light-years
- Earth Similarity Index 0.317
- Travel time at Voyager 1 speed 1,211,482 years
1 sibling around HD 114783
HD 114783 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 114783 b this | Gas Giant | 13.70 | 349.60 | 493.700 | — | 2001 |
| HD 114783 c | Gas Giant | 13.40 | 603.87 | 4,352.000 | — | 2018 |
HD 114783 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#554of 1771
top 31.2%
This planet
13.70R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 114783 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.70 | 11.21 |
| Mass (M⊕) | 1.00 | 349.60 | 317.83 |
| Density (g/cm³) | 5.51 | 0.75 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.86 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 349.600 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 114783
HIP
HIP 64457
TIC
TIC 292113181
Gaia DR2
Gaia DR2 3684934540986187776
Gaia DR3
Gaia DR3 3684934540986187776
System
HD 114783
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 1.35 Earth years on a mildly elliptical path at a mean orbital distance of 1.1600 AU.
Extended Orbital Architecture
RV semi-amplitude (K)
31.900 m/s
Transit mid-time (BJD)
2,455,283.8000
Long. of periastron (ω)
86.00°
Angular separation (arcsec)
55.10000
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.317
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
Vogt et al. 2002Instrument
HIRES Spectrometer
Publication
2002-03
Observation locale
Ground
Discovery cohort
Planets confirmed in 2001 at W. M. Keck Observatory (3 shown).
Host System: HD 114783
Spectral Class
K-type orange
Effective Temperature
5,135 K — cooler than the Sun (5,778 K)
Estimated Age
6.00 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.841 R☉
Stellar Mass
0.853 M☉
Metallicity [Fe/H]
0.21
Extended Stellar Properties
Surface gravity (log g)
4.526 dex
Stellar density
2.026 g/cm³
Systemic radial velocity
-12.11 km/s
Rotational v·sin i
0.90 km/s
Activity index (log R'HK)
-4.970
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
47.448 mas
Total Proper Motion
138.780 mas/yr
PM Right Ascension
-138.40 mas/yr
PM Declination
10.23 mas/yr
Galactic Cartesian (pc)
x = -0.949 · y = -0.312 · z = -0.040
Equatorial (J2000)
RA 198.18184° · Dec -2.26499°
Galactic ℓ, b
313.668° · 60.162°
Ecliptic λ, β
197.631° · 5.035°
HTM-20 index
-856477977
Observation Record
Photometric series
1
RV measurements
3
Stellar spectra
1
Archive notes
1
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