CT Serpentis

CT Serpentis

Location of CT Serpentis (circled in red)
Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Serpens
Right ascension	15^h 45^m 39.0752^s[1]
Declination	+14° 22′ 31.7590″[1]
Apparent magnitude (V)	~5 Max. 16.6 Min.[2]
Characteristics
Spectral type	CV[3]
Variable type	Nova[2]
Astrometry
Proper motion (μ)	RA: 3.780±0.119[1] mas/yr[1] Dec.: −22.338±0.095 mas/yr[1]
Parallax (π)	0.2304 ± 0.0629 mas[1]
Distance	2774+495 −268[2] pc
Details
Surface gravity (log g)	9.88±0.13[3] cgs
Temperature	10,772±230[3] K
Other designations
Nova Ser 1948, AAVSO 1541+14, 2MASS J15453907+1422317[4]
Database references
SIMBAD	data

CT Serpentis (also known as Nova Serpentis 1948) was a nova that appeared in the constellation Serpens in 1948. It was discovered by Ramze Alexander Bartaya at Abastumani Observatory on 9 April 1946.^[5][6] It is thought to have reached magnitude 6.0,^[7] but this is an extrapolation of its light curve as it was not observed until 9 April 1948 when it was at magnitude 9.0 and fading—clearly past its maximum.^[8]

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. S2CID 118925493.
3. Kepler, S. O.; et al. (February 2015). "New white dwarf stars in the Sloan Digital Sky Survey Data Release 10". Monthly Notices of the Royal Astronomical Society. 446 (4): 4078–4087. arXiv:1411.4149. Bibcode:2015MNRAS.446.4078K. doi:10.1093/mnras/stu2388. ISSN 1365-2966.
4. "CT Serpentis". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-08-23.
5. Duerbeck, Hilmar W. (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.
6. "Ramze (Raisa) Bartaya". Abastumani Astrophysical Observatory. Archived from the original on 20 September 2020. Retrieved 26 January 2021.
7. Watson, Christopher (4 January 2010). "CT Serpentis". AAVSO Website. American Association of Variable Star Observers. Retrieved 7 July 2014.
8. Davis, M. S. (1950). "Photographic observations of Nova Serpentis 1948". Astronomical Journal. 55: 126–27. Bibcode:1950AJ.....55..126D. doi:10.1086/106365.