HD 3240
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Cassiopeia |
Right ascension | 00h 36m 08.310s[1] |
Declination | +54° 10′ 06.41″[1] |
Apparent magnitude (V) | 5.075 |
Characteristics | |
Spectral type | B7 III[2] |
U−B color index | -0.37 |
B−V color index | -0.11 |
Astrometry | |
Radial velocity (Rv) | 1.1 km/s |
Proper motion (μ) | RA: ±0.21 22.56[1] mas/yr Dec.: ±0.19 −2.23[1] mas/yr |
Parallax (π) | 6.08 ± 0.28[1] mas |
Distance | 540 ± 20 ly (164 ± 8 pc) |
Absolute magnitude (MV) | −1.03[2] |
Other designations | |
Database references | |
SIMBAD | data |
HD 3240 is a 5th magnitude star in the constellation Cassiopeia, approximately 540 light years away from Earth. It is a bluish white giant star of the spectral type B7III, meaning its surface temperature is at least twice as hot as that of the Sun, and it is many times larger and brighter.[3]
References
- 1 2 3 4 5 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
- 1 2 Huang, W.; et al. (2012), "A catalogue of Paschen-line profiles in standard stars", Astronomy & Astrophysics, 547: A62, arXiv:1210.7893, Bibcode:2012A&A...547A..62H, doi:10.1051/0004-6361/201219804.
- 1 2 "HD 3240". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 30, 2007.
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