HD 216770

HD 216770
Observation data
Epoch 2000      Equinox 2000
Constellation Piscis Austrinus
Right ascension 22h 55m 53.7097s
Declination –26° 39′ 31.547″
Apparent magnitude (V) 8.10
Distance123.5 ly
(37.89 pc)
Spectral typeK1V
Other designations
CD-27°16109, GC 31973, HIP 113238, LTT 9276, NLTT 55283, SAO 191502
Database references
SIMBADdata

HD 216770 is an 8th magnitude star located approximately 124 light-years away in the constellation of Piscis Austrinus. It is an orange dwarf (spectral type K1 V), and is somewhat dimmer and cooler than our Sun.

In 2003 a planet was announced orbiting it by the Geneva Extrasolar Planet Search Team.[1]

The HD 216770 planetary system
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b >0.65 MJ 0.46 118.45 ± 0.55 0.37 ± 0.06 — —
c (unconfirmed) >0.1886 MJ 0.102 12.456 0.3887 — —

See also

References

  1. ↑ 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.
  • "Notes for star HD 216770". The Extrasolar Planets Encyclopaedia.

Coordinates: 22h 55m 53.7097s, −26° 39′ 31.547″


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