1 Persei
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 01h 51m 59.320s[1] |
| Declination | +55° 08′ 50.58″[1] |
| Characteristics | |
| Spectral type | B1.5V [2] |
| Variable type | eclipsing binary[3] |
| Astrometry | |
| Proper motion (μ) | RA: 12.05 ± 0.25[1] mas/yr Dec.: −9.18 ± 0.28[1] mas/yr |
| Parallax (π) | 2.52 ± 0.33[1] mas |
| Distance | approx. 1,300 ly (approx. 400 pc) |
| Other designations | |
1 Persei (1 Per) is a eclipsing binary[3] star in the constellation Perseus. Its apparent magnitude is 5.51.
Properties
1 Persei is an eclipsing binary star consisting of two B2 stars in a 25.9 day orbit.[4]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 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
- ↑ 2.0 2.1 SIMBAD, 1 Persei (accessed 13 January 2013)
- ↑ 3.0 3.1 North, P. et al. (1981). "1 Per: a new eclipsing binary with a long period and an elliptical orbit". Information Bulletin on Variable Stars 2036. Bibcode:1981IBVS.2036....1N.
- ↑ Harmanec, P. et al. (1997). "Search for forced oscillations in binaries. I. The eclipsing and spectroscopic binary V436 Persei = 1 Persei.". Astronomy and Astrophysics 319 (2): 867–880. Bibcode:1997A&A...319..867H.
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