HD 73534
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| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Cancer |
| Right ascension | 08h 39m 15.8035s |
| Declination | +12° 57′ 37.351″ |
| Apparent magnitude (V) | 8.24 |
| Characteristics | |
| Spectral type | G5IV |
| Apparent magnitude (B) | 9.19 |
| Apparent magnitude (J) | 6.524 |
| Apparent magnitude (H) | 6.072 |
| Apparent magnitude (K) | 5.962 |
| B−V color index | 0.95 |
| Astrometry | |
| Proper motion (μ) | RA: –113.68 mas/yr Dec.: –93.19 mas/yr |
| Parallax (π) | 10.31 ± 1.11 mas |
| Distance | approx. 320 ly (approx. 100 pc) |
| Absolute magnitude (MV) | 3.31 |
| Details | |
| Mass | 1.29 ± 0.1 M☉ |
| Radius | 2.65 ± 0.1 R☉ |
| Luminosity | 3.79 L☉ |
| Surface gravity (log g) | 3.81 |
| Temperature | 4952 ± 50 K |
| Metallicity | 0.16 ± 0.04 |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia |
data |
HD 73534 is an 8th magnitude G-type subgiant star located approximately 316 light years away in the constellation Cancer. A G5 star, it has evolved off the main sequence, which is why it is much more luminous than our Sun. In August 2009, it was announced that it has a planet. It is the first planetary system discovered in Cancer since 55 Cancri in April 1996. It is the sixth planet discovered in the constellation, because 55 Cancri has five known planets.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥1.103 ± 0.087 MJ | 3.067 ± 0.068 | 1770 ± 40 | 0.074 ± 0.071 | — | — |
See also [edit]
References [edit]
- ^ Valenti et al.; Fischer, Debra; Marcy, Geoffrey W.; Johnson, John A.; Henry, Gregory W.; Wright, Jason T.; Howard, Andrew W.; Giguere, Matt et al. (2009). "Two Exoplanets Discovered at Keck Observatory" (abstract). The Astrophysical Journal 702 (2): 989–997. arXiv:0908.1612. Bibcode:2009ApJ...702..989V. doi:10.1088/0004-637X/702/2/989. (web preprint)
Coordinates: 
08h 39m 15.8035s, +12° 57′ 37.351″
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