Iota Leporis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lepus |
| Right ascension | 05h 12m 17.90190s [1] |
| Declination | −11° 52′ 09.1863″ [1] |
| Apparent magnitude (V) | 4.45 [2] |
| Characteristics | |
| Spectral type | B7.5Vn [3] |
| U−B color index | -0.40 [2] |
| B−V color index | -0.10 [2] |
| Astrometry | |
| Radial velocity (Rv) | +23.50[4] km/s |
| Proper motion (μ) | RA: +24.39[1] mas/yr Dec.: -31.02[1] mas/yr |
| Parallax (π) | 14.07 ± 0.16 mas[1] |
| Distance | 232 ± 3 ly (71.1 ± 0.8 pc) |
| Absolute magnitude (MV) | 0.19 [5] |
| Other designations | |
| Database references | |
| SIMBAD | data |
Iota Leporis (ι Lep) is a class B7.5V[3] (blue main-sequence) star in the constellation Lepus. Its apparent magnitude is 4.45[2] and it is approximately 232 light years away based on parallax.[1]
The star has one companion, AM Leporis, a BY Draconis variable[7] of apparent magnitude 9.92,[2] and type G8Ve[8] at a separation of 12.7"[9] (about 900 AU at the given parallax).
References
- ^ a b c d e f 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
- ^ a b c d e Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237: 0. Bibcode:2002yCat.2237....0D.
- ^ a b Garrison, R. F.; et al. (1994), "The late B-type stars: refined MK classification, confrontation with Stromgren photometry, and the effects of rotation", The Astronomical Journal, 107 (4): 1556–1564, Bibcode:1994AJ....107.1556G, doi:10.1086/116967
- ^ Kharchenko, N. V.; et al. (2007), "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ˜55000 stars and mean radial velocities of 516 Galactic open clusters and associations", Astronomische Nachrichten, 328 (9): 889, arXiv:0705.0878, Bibcode:2007AN....328..889K, doi:10.1002/asna.200710776
- ^ Absolute magnitude calculated as , where is the star's absolute magnitude, is the star's apparent magnitude, and is the star's measured parallax in arcseconds.
- ^ "Iota Leporis". SIMBAD Astronomical Database. Retrieved 2015-10-03.
- ^ Kazarovets, E. V.; et al. (2008), "The 79th name-list of variable stars", Information Bulletin on Variable Stars, 5863 (1), Bibcode:2008IBVS.5863....1K
- ^ Gahm, G. F.; et al. (1983), "A study of visual double stars with early type primaries. I - Spectroscopic results", Astronomy and Astrophysics Supplement Series, 51: 143–159, Bibcode:1983A&AS...51..143G
- ^ Dommanget, J.; et al. (2002), "Catalog of Components of Double & Multiple stars", Observations et Travaux, 54 (5), Bibcode:2002yCat.1274....0D Vizier result
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