HD 73534
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cancer |
| Right ascension | 08h 39m 15.803s[1] |
| Declination | +12° 57′ 37.34″[1] |
| 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: -114.84 ± 1.00[1] mas/yr Dec.: -94.19 ± 0.59[1] mas/yr |
| Parallax (π) | 12.34 ± 0.74[1] mas |
| Distance | 260 ± 20 ly (81 ± 5 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 cgs |
| 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 260 light years away[1] 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 that of 55 Cancri in April 1996, and the sixth planet, as 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
References
- 1 2 3 4 5 6 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
- ↑ Valenti, Jeff A.; et al. (2009). "Two Exoplanets Discovered at Keck Observatory". The Astrophysical Journal 702 (2): 989–997. arXiv:0908.1612. Bibcode:2009ApJ...702..989V. doi:10.1088/0004-637X/702/2/989.
Coordinates: 
08h 39m 15.8035s, +12° 57′ 37.351″
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