V462 Lupi

V462 Lupi
Approximate location of V462 Lupi (circled in red)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Lupus
Right ascension 15h 08m 03.274s[1]
Declination −40° 08′ 29.58″[1]
Apparent magnitude (V) 5.3 – 18.5[2]
Characteristics
Variable type Nova
Other designations
AT 2025nlr, Nova Lupi 2025, ASASSN-25cm, V462 Lup[3]

V462 Lupi, also known as Nova Lupi 2025,[3] is a bright nova in the constellation Lupus discovered by All Sky Automated Survey for SuperNovae (ASAS-SN) on 12 June 2025.[1] At the time of its discovery, it had an apparent visual magnitude of 8.7.[1] It was classified as a classical nova on 14 June 2025.[4]

By 18 June 2025, it had brightened to magnitude 5.7, making it just visible to the naked eye.[6] The peak brightness, magnitude 5.5, was reached on 20 June 2025,[7] and around 10 July 2025 it became too faint to see with the naked eye even under ideal conditions.

All novae are binary stars, with matter from a "donor" star accreting onto a white dwarf. In the case of V462 Lupi, the orbital period is 0.07488825±0.00000016 days (1.80 h).[8]

  • Photograph of V462 Lupi

See also

References

  1. ^ a b c d e "AT 2025nlr". Transient Name Server. IAU. Retrieved 19 June 2025.
  2. ^ "VSX: Detail for V0462 Lup". International Variable Star Index. AAVSO. Retrieved 20 June 2025.
  3. ^ a b Pearce, A.; Stanek, K. Z.; McNaught, R. H.; Amorim, A.; Souza, W.; Aguiar, J. G. de S.; Tampo, Y.; Kazarovets, E. (2025). "V462 LUPI = Nova LUPI 2025". Central Bureau Electronic Telegrams (5570): 1. Bibcode:2025CBET.5570....1P.
  4. ^ Tampo, Yusuke (2025). "Spectroscopic Classification of ASASSN-25cm (=AT 2025nlr) as a Classical Nova". The Astronomer's Telegram. 17228: 1. Bibcode:2025ATel17228....1T. Retrieved 19 June 2025.
  5. ^ "Download Data". aavso.org. AAVSO. Retrieved 20 June 2025.
  6. ^ Baker, Harry (19 June 2025). "A 'new star' has exploded into the night sky — and you can see it from North America". Live Science. Retrieved 19 June 2025.
  7. ^ Schaefer, Bradley E. (23 June 2025). "Bright nova V462 Lup Has Orbital Period of 1.797 Hours, at the Bottom of the Period Gap". The Astronomer's Telegram. 17240: 1. Bibcode:2025ATel17240....1S. Retrieved 26 June 2025.
  8. ^ Schaefer, Bradley E. (2025-08-07). "Discovery of 6 New Orbital Periods for Classical Novae". Research Notes of the AAS. 9 (8): 213. doi:10.3847/2515-5172/adf7a3. ISSN 2515-5172.
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