軍井一

軍井一（Iota Leporis，ι Leporis）是在南天星座天兔座的一顆三合星系統。它的視星等為4.45等，肉眼可見，它是藍白光的點光源。基於從地球量測的每年14.07mas的視差，該系統位於距離太陽大約232光年之處 主星A是一顆B型主序星，恆星分類為B7.5Vn，此處尾碼的「n」表示有自轉引起的「模糊」吸收線。它的年齡大約9,400萬，並且有185公里/秒的投影自轉速度，估計它的質量是太陽質量的3.4倍，來自光球的有效溫度為13,781K ，使它輻射的光度是太陽光度的153倍。 它有一顆緊密的伴星，是 X射線發射的來源。這顆恆星的質量很可能至少是太陽的1.05倍。第三顆星是天兔座AM，是一顆天龍座BY型變星，視星等9.92等 ，光譜類行為G8Ve，角距離12.7"。 Huélamo, N.; Fernández, M.; Neuhäuser, R.; Wolk, S. J. Rotation periods of Post-T Tauri stars in Lindroos systems (PDF). Astronomy and Astrophysics. December 2004, 428 (3): 953–967 [29 June 2022]. Bibcode:2004A&A...428..953H. S2CID 10656237. arXiv:astro-ph/0408226 . doi:10.1051/0004-6361:20034442. （原始内容存档 (PDF)于2023-10-28）.  van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, S2CID 18759600, arXiv:0708.1752 , doi:10.1051/0004-6361:20078357.  Ducati, J. R., VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system, CDS/ADC Collection of Electronic Catalogues, 2002, 2237: 0, Bibcode:2002yCat.2237....0D.  Garrison, R. F.; et al, The late B-type stars: refined MK classification, confrontation with Stromgren photometry, and the effects of rotation, The Astronomical Journal, 1994, 107 (4): 1556–1564, Bibcode:1994AJ....107.1556G, doi:10.1086/116967.  Eggleton, P. P.; Tokovinin, A. A., A catalogue of multiplicity among bright stellar systems, Monthly Notices of the Royal Astronomical Society, September 2008, 389 (2): 869–879, Bibcode:2008MNRAS.389..869E, S2CID 14878976, arXiv:0806.2878 , doi:10.1111/j.1365-2966.2008.13596.x.  Kharchenko, N. V.; et al, 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, 2007, 328 (9): 889, Bibcode:2007AN....328..889K, S2CID 119323941, arXiv:0705.0878 , doi:10.1002/asna.200710776.  Hubrig, S.; et al, Search for low-mass PMS companions around X-ray selected late B stars, Astronomy and Astrophysics, June 2001, 372: 152–164, Bibcode:2001A&A...372..152H, S2CID 17507782, arXiv:astro-ph/0103201 , doi:10.1051/0004-6361:20010452.  Zorec, J.; Royer, F., Rotational velocities of A-type stars. IV. Evolution of rotational velocities, Astronomy & Astrophysics, January 2012, 537: A120, Bibcode:2012A&A...537A.120Z, S2CID 55586789, arXiv:1201.2052 , doi:10.1051/0004-6361/201117691.  David, Trevor J.; Hillenbrand, Lynne A., The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets, The Astrophysical Journal, 2015, 804 (2): 146, Bibcode:2015ApJ...804..146D, S2CID 33401607, arXiv:1501.03154 , doi:10.1088/0004-637X/804/2/146.  iot Lep. SIMBAD. 斯特拉斯堡天文資料中心. [2017-08-18].  Kazarovets, E. V.; et al, The 79th name-list of variable stars, Information Bulletin on Variable Stars, 2008, 5863 (1): 1, Bibcode:2008IBVS.5863....1K.  Gahm, G. F.; et al, A study of visual double stars with early type primaries. I - Spectroscopic results, Astronomy and Astrophysics Supplement Series, 1983, 51: 143–159, Bibcode:1983A&AS...51..143G.  Dommanget, J.; et al, Catalog of Components of Double & Multiple stars, Observations et Travaux, 2002, 54 (5), Bibcode:2002yCat.1274....0D.  Vizier result （页面存档备份，存于互联网档案馆）