HD 10180

HD 10180

View of the sky around the star HD 10180 (center)
Credit: ESO
Observation data
Epoch J2000      Equinox J2000
Constellation Hydrus
Right ascension 01h 37m 53.57724s[1]
Declination −60° 30′ 41.4821″[1]
Apparent magnitude (V) 7.33[2]
Characteristics
Evolutionary stage Main sequence
Spectral type G1V[3]
Astrometry
Radial velocity (Rv)35.44±0.12[1] km/s
Proper motion (μ) RA: −14.303±0.017 mas/yr[1]
Dec.: 8.058±0.016 mas/yr[1]
Parallax (π)25.6611 ± 0.0146 mas[1]
Distance127.10 ± 0.07 ly
(38.97 ± 0.02 pc)
Details
Mass1.062 ± 0.017[4] M☉
Radius1.11 ± 0.318[4] R☉
Luminosity1.64± 0.02[5] L☉
Surface gravity (log g)4.39[6] cgs
Temperature5,911[6] K
Metallicity [Fe/H]0.08[6] dex
Rotation24 ± 3 days[5]
Rotational velocity (v sin i)< 3[5] km/s
Age7.3[7] Gyr
Other designations
2MASS J01375356-6030414, CD–61°285, HD 10180, HIP 7599, SAO 248411[2]
Database references
SIMBADdata

HD 10180, also designated 2MASS J01375356-6030414, is a Sun-like star in the southern constellation Hydrus that is notable for its large planetary system. Since its discovery, at least six exoplanets have been observed orbiting it, and some studies have proposed up to nine potential planets, which would make it potentially the largest of all known planetary systems, including the Solar System.[8][5]

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  4. ^ a b Cite error: The named reference ApJS_168_297 was invoked but never defined (see the help page).
  5. ^ a b c d Cite error: The named reference aaa528 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference aaa487_1_373 was invoked but never defined (see the help page).
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