V455 And
V515 And
AE Aqr
FO Aqr
V349 Aqr
XY Ari
V405 Aur
V647 Aur
HT Cam
MU Cam
DW Cnc
V709 Cas
V1025 Cen
V1033 Cas
TV Col
TX Col
UU Col
V2069 Cyg
V2306 Cyg
DO Dra
PQ Gem
V418 Gem
DQ Her
V1323 Her
V1460 Her
V1674 Her
EX Hya
NY Lup
V2400 Oph
V2731 Oph
V3037 Oph
V598 Peg
GK Per
AO Psc
HZ Pup
V667 Pup
WX Pyx
V1223 Sgr
V4743 Sgr
CC Scl
V1062 Tau
AX J1740.1
AX J1832.3
AX J1853.3
CTCV J2056
CXO J174954
IGR J04571
IGR J08390
IGR J15094
IGR J16500
IGR J16547
IGR J17014
IGR J17195
IGR J18151
IGR J18173
IGR J18308
IGR J19267
PBC J0927.8
PBC J1841.1
RX J1804
RX J2015
RX J2113
RX J2133
RX J2306
Swift J0717
Swift J1839
Swift J2006
Swift J2138

Full Catalog

Related Systems

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V455 Andromedae = HS 2331+3905

Link to this object in VSX

A finding chart for V455 And

SkyView image of V455 And (see important notes)

  • Equatorial: 23h34m01.37s, +39d21m38.6s (Gaia)
  • Galactic: l=106.99, b=-21.10
Finding Chart:
Araujo-Betancor et al. (2005)
Optical G=16.0 (Gaia); X-rays: 7.8x10-14 ergs cm-2s-1 (4XMM-DR11)
IP Credential:
**** (Confirmed LLIP): Although not all the periods of this system are fully understood, the presence of the coherent 67.6 s period, which must be the spin period, is beyond doubt.
  • Orbital: 0.05630921 d = 1.351421 hr = 4865.116 s, from the shallow eclipses.
    HJD = 2451812.67765(35) + 0.05630921(1)E
    (Araujo-Betancor et al. 2005) for the times of mid-eclipse.
  • 0.0007826352 d = 1.126995 m = 67.619685 s, seen in optical photometry and time resolved spectroscopy.
  • Others: 83.38 min permanent superhump period; 80.376 negative superhump period; ~3.5 hr spectroscopic period (not strictly coherent); 5-6 min white dwarf pulsation periods; 67.28 s period seen in optical photometry, which appears to be a beat period between the spin and the 3.5 hr period.
75.6 (75.4-75.9) pc (Gaia EDR3; parallax: 13.189+/-0.043 mas)


  1. Araujo-Betancor et al. 2005 (optical photometry & spectroscopy and UV spectroscopy)
  2. Senziani, Skinner & Jean 2008, ATel 1372 (hard X-ray detection during outburst)
  3. Silvestri et al. 2012 (UV and optical photometry)
  4. Bloemen et al. 2013 (optical spectroscopy)
  5. Szkody et al. 2013 (UV spectroscopy and optical photometry)
  6. Kozhevnikov 2015 (optical photometry)
  7. Mukadam et al. 2016 (optical photometry)
  8. Hameury & Lasota 2017 (disk instability model for IPs)
  9. Campana et al. 2018 (optical & multiwavelength)

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Please send your comments, suggestions etc. to Koji.Mukai@nasa.gov and/or Koji.Mukai@umbc.edu
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