Key parameters at a glance
- A radius of 12.80 Earth radii
- A mass of 1,825.29 Earth masses
- Surface gravity around 11.14 g
- An orbital period of 1,075.380 days
- Semi-major axis 2.0510 AU
- Distance from Earth 108.02 light-years
- Earth Similarity Index 0.437
- Travel time at Voyager 1 speed 1,905,012 years
Context from the literature
109 Piscium b is a long-period extrasolar planet discovered in orbit around 109 Piscium. It is about 5.74 times the mass of Jupiter and is likely to be a gas giant. As is common for long-period planets discovered around other stars, it has an orbital eccentricity greater than that of Jupiter.
Excerpted from Wikipedia · full article
HD 10697 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1063of 1771
top 60.0%
This planet
12.80R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 10697 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.80 | 11.21 |
| Mass (M⊕) | 1.00 | 1,825.29 | 317.83 |
| Density (g/cm³) | 5.51 | 4.78 | 1.33 |
| Surface Gravity (g) | 1.00 | 11.14 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 1,825.289 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 2,028.709 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 10697
HIP
HIP 8159
TIC
TIC 456905162
Gaia DR2
Gaia DR2 95652018353917056
Gaia DR3
Gaia DR3 95652018353917056
System
HD 10697
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 2.94 Earth years on a mildly elliptical path at a mean orbital distance of 2.0510 AU.
Extended Orbital Architecture
RV semi-amplitude (K)
114.583 m/s
Transit mid-time (BJD)
2,452,506.8000
Long. of periastron (ω)
112.82°
Angular separation (arcsec)
61.90000
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.437
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. 2000Instrument
HIRES Spectrometer
Publication
2000-06
Observation locale
Ground
Discovery cohort
Planets confirmed in 1999 at W. M. Keck Observatory (4 shown).
Host System: HD 10697
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,641 K — cooler than the Sun (5,778 K)
Estimated Age
6.98 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.863 R☉
Stellar Mass
0.990 M☉
Metallicity [Fe/H]
0.17
Extended Stellar Properties
Surface gravity (log g)
3.958 dex
Stellar density
0.224 g/cm³
Systemic radial velocity
-46.60 km/s
Rotational v·sin i
2.50 km/s
Activity index (log R'HK)
-5.080
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
30.164 mas
Total Proper Motion
113.353 mas/yr
PM Right Ascension
-42.98 mas/yr
PM Declination
-104.89 mas/yr
Galactic Cartesian (pc)
x = 0.842 · y = 0.415 · z = 0.343
Equatorial (J2000)
RA 26.23241° · Dec 20.08270°
Galactic ℓ, b
139.671° · -41.044°
Ecliptic λ, β
31.556° · 8.622°
HTM-20 index
1868922872
Observation Record
Photometric series
1
RV measurements
4
Stellar spectra
2
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