FH Serpentis

FH Serpentis (Nova Serpentis 1970) was a nova, which appeared in the constellation Serpens in 1970. It reached magnitude 4.4.[4] It was discovered on February 13, 1970 by Minoru Honda located at Kurashiki, Japan.[5][6] Other astronomers later studied this Nova, and calculated its distances based on the decay time of its light curves.[6]

FH Serpentis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Serpens
Right ascension  18h 30m 47.0400s[1]
Declination +02° 36′ 52.0264″[1]
Apparent magnitude (V) 4.5 Max.
16.8 Min.[2]
Characteristics
Variable type Nova[2]
Astrometry
Proper motion (μ) RA: 2.060±0.142[1] mas/yr
Dec.: −3.047±0.167[1] mas/yr
Parallax (π)0.9512 ± 0.0765[1] mas
Distance1060+112
−68[2] pc
Other designations
Nova Ser 1970, AAVSO 1825+02, Gaia DR2 4276984993803967744[3]
Database references
SIMBADdata

Nova Serpentis was also observed by the NASA space observatory OAO-2 Stargazer, active from 1968 to 1973.[7]

The Nova was important for science because it was one of the first to be observed in multiple wavelength bands including, infrared, visible, ultra-violet, and radio.[5] One of the observations that stood out was that it became brightest in the infrared 100 days after it was first discovered.[5]

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. "FH Serpentis". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-08-30.
  4. Templeton, Matthew (23 January 2012). "FH Ser (Nova Serpentis 1970)". AAVSO Website. American Association of Variable Star Observers. Retrieved 2 July 2014.
  7. Joseph A. Angelo (2014), Spacecraft for Astronomy, Infobase Publishing, p. 20, ISBN 978-1-4381-0896-4


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