Key parameters at a glance
- A radius of 12.90 Earth radii
- A mass of 1,493.79 Earth masses
- Surface gravity around 8.98 g
- An orbital period of 1,392.000 days
- Semi-major axis 2.6500 AU
- Distance from Earth 165.28 light-years
- Earth Similarity Index 0.426
- Travel time at Voyager 1 speed 2,914,659 years
Context from the literature
HD 196050 b is an exoplanet with a 1378-day period and a minimum mass of 2.90 Jupiter masses. The average orbital distance is 2.54 astronomical units and the orbital eccentricity is 22.8%. The periastron (closest) distance is 1.96 AU and the apastron (farthest) distance is 3.12 AU. The average orbital velocity is 20.1 km/s and the semi-amplitude is 49.7 m/s. The longitude of periastron is 187° and the time of periastron is 2,450,843 JD.
Excerpted from Wikipedia · full article
HD 196050 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1011of 1771
top 57.0%
This planet
12.90R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 196050 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.90 | 11.21 |
| Mass (M⊕) | 1.00 | 1,493.79 | 317.83 |
| Density (g/cm³) | 5.51 | 3.82 | 1.33 |
| Surface Gravity (g) | 1.00 | 8.98 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 1,493.794 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 949.353 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 196050
HIP
HIP 101806
TIC
TIC 351534793
Gaia DR2
Gaia DR2 6454954010413575296
Gaia DR3
Gaia DR3 6454954010413575296
System
HD 196050
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 3.81 Earth years on a mildly elliptical path at a mean orbital distance of 2.6500 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.426
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
Jones et al. 2002Instrument
UCLES Spectrograph
Publication
2002-12
Observation locale
Ground
Discovery cohort
Planets confirmed in 2002 at Anglo-Australian Telescope (5 shown).
Host System: HD 196050
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,879 K — hotter than the Sun (5,778 K)
Estimated Age
4.30 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.420 R☉
Stellar Mass
1.270 M☉
Metallicity [Fe/H]
0.23
Extended Stellar Properties
Surface gravity (log g)
4.250 dex
Stellar density
0.523 g/cm³
Systemic radial velocity
61.37 km/s
Rotational v·sin i
3.30 km/s
Activity index (log R'HK)
-4.980
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
19.705 mas
Total Proper Motion
201.848 mas/yr
PM Right Ascension
-191.12 mas/yr
PM Declination
-64.92 mas/yr
Galactic Cartesian (pc)
x = 0.312 · y = -0.379 · z = -0.872
Equatorial (J2000)
RA 309.46378° · Dec -60.63476°
Galactic ℓ, b
335.919° · -36.359°
Ecliptic λ, β
294.181° · -40.467°
HTM-20 index
-1740142364
Observation Record
Photometric series
1
RV measurements
3
Archive notes
6
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