Iota Leporis

Iota Leporis

Observation data Epoch J2000      Equinox J2000
Constellation	Lepus
Right ascension	05^h 12^m 17.90190^s [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[1] mas
Distance	232 ± 3 ly (71.1 ± 0.8 pc)
Absolute magnitude (MV)	0.19 [5]
Other designations
3 Leporis, SAO 150223, CCDM J05123-1152A, HIP 24244, HR 1696, GC 6374, HD 33802 [6]
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

1. 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. 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.
3. 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
4. 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
5. Absolute magnitude calculated as $M = m + 5 (1 + \log_{10}{p})\!\,$, where $M$ is the star's absolute magnitude, $m$ is the star's apparent magnitude, and $p$ is the star's measured parallax in arcseconds.
6. "Iota Leporis". SIMBAD Astronomical Database. Retrieved 2015-10-03.
7. Kazarovets, E. V.; et al. (2008), "The 79th name-list of variable stars", Information Bulletin on Variable Stars, 5863 (1), Bibcode:2008IBVS.5863....1K
8. 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
9. Dommanget, J.; et al. (2002), "Catalog of Components of Double & Multiple stars", Observations et Travaux, 54 (5), Bibcode:2002yCat.1274....0D Vizier result