HD 65216

HD 65216 is an 8th magnitude G-type main sequence star located approximately 35.16 parsecs (115 ly) away in the constellation of Carina. It is a Sun-like yellow dwarf, 8% less massive and somewhat less luminous. It cannot be seen without technical aid, but with binoculars or telescope it should be visible.

HD 65216
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Carina
Right ascension  07h 53m 41.3193s[1]
Declination −63° 38′ 50.3532″[1]
Apparent magnitude (V) 7.98
Characteristics
Spectral type G5V
Astrometry
Proper motion (μ) RA: −123.633 ± 0.065[1] mas/yr
Dec.: 146.578 ± 0.073[1] mas/yr
Parallax (π)28.4445 ± 0.0317[1] mas
Distance114.7 ± 0.1 ly
(35.16 ± 0.04 pc)
Details
Mass0.95 ± 0.01[2] M☉
Radius0.864 ± 0.003[2] R☉
Luminosity0.716 ± 0.001[2] L☉
Surface gravity (log g)4.53 ± 0.01[2] cgs
Temperature5718 ± 8[2] K
Age1.7 ± 0.5[2] Gyr
Other designations
CD−63°359, HIP 38558, SAO 250002[3]
Database references
SIMBADdata

Planetary system

An extrasolar planet (designated as HD 65216 b) was discovered orbiting this star in 2003.[4] A second much more distant planet was discovered in 2019.[5]

The HD 65216 planetary system[5]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b ≥1.295±0.062 MJ 1.301±0.020 577.6±1.328 0.27±0.02 — —
c ≥2.03±0.11 MJ 5.75±0.09 5370±20 0.17±0.04 — —

See also
  • List of extrasolar planets

References
  1. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575. A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951.
  3. "HD 65216". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-09-26.
  4. Mayor, M.; et al. (2004). "The CORALIE survey for southern extra-solar planets XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE". Astronomy and Astrophysics. 415 (1): 391–402. arXiv:astro-ph/0310316. Bibcode:2004A&A...415..391M. doi:10.1051/0004-6361:20034250.
  5. Wittenmyer, Robert A.; et al. (2019). "Truly eccentric – I. Revisiting eight single-eccentric planetary systems". Monthly Notices of the Royal Astronomical Society. 484 (4): 5859–5867. arXiv:1901.08471. Bibcode:2019MNRAS.484.5859W. doi:10.1093/mnras/stz290.


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