KT Eridani

KT Eridani was a bright nova in the constellation Eridanus that produced an outburst in 2009. It was discovered on 2009 November 25 by K. Itagaki at Yamagata, Japan.[4] It was first called Nova Eridani 2009 and is located at  04h 47m 54.21s −10° 10′ 43.1″.[5] In the most common nova systems, the white dwarf accretes matter from a main sequence star. However, in KT Eri is thought to have a red giant companion star.[6]

KT Eridani

KT Eridani on 2009 November 30 during a full moon
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Eridanus
Right ascension  04h 47m 54.2015s[1]
Declination −10° 10′ 42.9633″[1]
Apparent magnitude (V) 5.4 Max.
15.0 Min.[2]
Characteristics
Variable type Nova[2]
Astrometry
Proper motion (μ) RA: 6.469±0.053[1] mas/yr
Dec.: −11.009±0.052[1] mas/yr
Parallax (π)0.2044 ± 0.0384[1] mas
Distance3744+591
−328[2] pc
Other designations
Nova Eridani 2009, Gaia DR2 3184664584368981760[3][2]
Database references
SIMBADdata

See also

References
  1. Brown, 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.
  2. Schaefer, Bradley E. (2018). "The distances to Novae as seen by Gaia". Monthly Notices of the Royal Astronomical Society. 481 (3): 3033–3051. arXiv:1809.00180. Bibcode:2018MNRAS.481.3033S. doi:10.1093/mnras/sty2388.
  3. "KT Eridani". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-08-26.
  4. http://www.cbat.eps.harvard.edu/iau/cbet/002000/CBET002050.txt
  5. "KT Eri". SIMBAD. Centre de données astronomiques de Strasbourg.
  6. Jurdana-Šepić, R.; Ribeiro, V. A. R. M.; Darnley, M. J.; Munari, U.; Bode, M. F. (January 2012). "Historical light curve and search for previous outbursts of Nova KT Eridani (2009)". Astronomy & Astrophysics. 537: A34. arXiv:1110.4637. Bibcode:2012A&A...537A..34J. doi:10.1051/0004-6361/201117806.


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