V604 Aquilae

V604 Aquilae or Nova Aquilae 1905

A light curve for V604 Aquilae, plotted from data published by Walker (1933)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 19h 02m 06.33s[2]
Declination −04° 26′ 43.2″[2]
Apparent magnitude (V) 7.6(blue) – 19.6(V)[3]
Astrometry
Absolute magnitude (MV)-8.3[4]
Characteristics
Spectral type pec(Nova)[3]
B−V color index 0.3[5]
Variable type NA[3]
Other designations
Nova Aquilae 1905, CSI-04-18594, SV* HV 1175, AAVSO 1856-04, AN 104.1905, HD 176779.
Database references
SIMBADdata
The location of V604 Aquilae (circled in red)

V604 Aquilae or Nova Aquilae 1905 is a nova which was first observed in the constellation Aquila in 1905 with a maximum brightness of magnitude 7.6.[3] It was never bright enough to be seen with the naked eye. It was discovered by Williamina Fleming on a Harvard College Observatory photographic plate taken on August 31, 1905.[6] Examination of plates taken earlier indicates that peak brightness occurred in mid-August 1905.[7] The star's quiescent visual band brightness is 19.6.[5]

V604 Aquilae faded by 3 magnitudes in just 25 days, making it a "fast nova".[6] Detection of a faint nebula surrounding the star, with a radius of 0.4 arc minutes, was reported early in 1906.[8] In 1994, a photometric study detected brightness variations of up to ~0.45 magnitudes on timescales of about one hour.[9] An attempt to detect cool molecular gas surrounding the nova in 2015 was unsuccessful.[10]

  1. ^ Cite error: The named reference Walker was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference DownesPASPV113 was invoked but never defined (see the help page).
  3. ^ a b c d Cite error: The named reference IVSI was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Harrison was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Szkody was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Duerbeck was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Tappert was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Pickering was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Haefner was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Kaminski was invoked but never defined (see the help page).