V529 Orionis, also known as Nova Orionis 1678, is a variable star which is usually classified as a nova. It was discovered on 28 March 1678 by Johannes Hevelius, who spotted it while observing a lunar occultation of χ1 Orionis, the star that forms the northernmost tip of Orion's club. Following the occultation of χ1 Orionis, Hevelius observed the occultation of another star by the Moon a few minutes later, which disappeared behind the first quarter Moon at 09:16 and reappeared at 10:29. Those details, combined with modern coordinates for χ1 Orionis, allowed Ashworth to derive coordinates, probably accurate to within a few arc seconds, for the 1678 nova.[3][4]
V529 Orionis is sometimes referred to as Nova Orionis 1667 (for example the Simbad database makes this identification), but Ashworth argues against this identification[4] and the identification of the star during an occultation makes the year unambiguous. The maximum and minimum apparent magnitudes for this star are highly uncertain, but a peak brightness of magnitude 6 (barely visible to the naked eye) and a minimum of 20 was suggested by Duerbeck.[5]
Schmidtobreick et al. argue that the lack of emission lines usually seen in the spectra of novae makes it doubtful that V529 Orionis was a nova. They suggest it may instead be a T Tauri star, and that the actual nova observed by Hevelius may still be unidentified.[3]
References
^ abBrown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
^ abAshworth, W.B. (March 1981). "A rejection of nova Orionis 1667, with a suggestion of a possible nova Orionis 1678". Quarterly Journal of the Royal Astronomical Society. 22: 22–27. Bibcode:1981QJRAS..22...22A.
^Duerbeck, Hilmar W. (March 1987). "A Reference Catalogue and Atlas of Galactic Novae". Space Science Reviews. 45 (1–2): 1–14. Bibcode:1987SSRv...45....1D. doi:10.1007/BF00187826. S2CID 115854775.
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v529, orionis, also, known, nova, orionis, 1678, variable, star, which, usually, classified, nova, discovered, march, 1678, johannes, hevelius, spotted, while, observing, lunar, occultation, orionis, star, that, forms, northernmost, orion, club, following, occ. V529 Orionis also known as Nova Orionis 1678 is a variable star which is usually classified as a nova It was discovered on 28 March 1678 by Johannes Hevelius who spotted it while observing a lunar occultation of x1 Orionis the star that forms the northernmost tip of Orion s club Following the occultation of x1 Orionis Hevelius observed the occultation of another star by the Moon a few minutes later which disappeared behind the first quarter Moon at 09 16 and reappeared at 10 29 Those details combined with modern coordinates for x1 Orionis allowed Ashworth to derive coordinates probably accurate to within a few arc seconds for the 1678 nova 3 4 V529 OrionisLocation of V529 Orionis circled in red Observation dataEpoch J2000 Equinox J2000Constellation OrionRight ascension 05h 58m 20 146s 1 Declination 20 15 45 35 1 CharacteristicsVariable type Nova Other designationsNova Ori 1678 Gaia DR2 3422837700803331584 2 Database referencesSIMBADdataV529 Orionis is sometimes referred to as Nova Orionis 1667 for example the Simbad database makes this identification but Ashworth argues against this identification 4 and the identification of the star during an occultation makes the year unambiguous The maximum and minimum apparent magnitudes for this star are highly uncertain but a peak brightness of magnitude 6 barely visible to the naked eye and a minimum of 20 was suggested by Duerbeck 5 Schmidtobreick et al argue that the lack of emission lines usually seen in the spectra of novae makes it doubtful that V529 Orionis was a nova They suggest it may instead be a T Tauri star and that the actual nova observed by Hevelius may still be unidentified 3 References Edit a b Brown A G A et al Gaia collaboration August 2018 Gaia Data Release 2 Summary of the contents and survey properties Astronomy amp Astrophysics 616 A1 arXiv 1804 09365 Bibcode 2018A amp A 616A 1G doi 10 1051 0004 6361 201833051 Gaia DR2 record for this source at VizieR V529 Orionis SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved 2020 12 10 a b Schmidtobreick L Tappert C Bianchini A Mennickent R E March 2005 Spectroscopic analysis of tremendous outburst nova candidates Astronomy amp Astrophysics 432 1 199 205 arXiv astro ph 0411198 Bibcode 2005A amp A 432 199S doi 10 1051 0004 6361 20041371 S2CID 18168602 a b Ashworth W B March 1981 A rejection of nova Orionis 1667 with a suggestion of a possible nova Orionis 1678 Quarterly Journal of the Royal Astronomical Society 22 22 27 Bibcode 1981QJRAS 22 22A Duerbeck Hilmar W March 1987 A Reference Catalogue and Atlas of Galactic Novae Space Science Reviews 45 1 2 1 14 Bibcode 1987SSRv 45 1D doi 10 1007 BF00187826 S2CID 115854775 This variable star related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title V529 Orionis amp oldid 1160585857, wikipedia, wiki, book, books, library,
