National Aeronautics and Space Administration

IPs

V455 And
V515 And
AE Aqr
FO Aqr
V349 Aqr
XY Ari
V405 Aur
V647 Aur
HT Cam
MU Cam
DW Cnc
BG CMi
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
EI UMa
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
LAMOST 0240
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

Position:

• Equatorial: 00^h28^m48.83^s, +59^d17^m22.0^s (Gaia)
• Galactic: l=120.04, b=-3.46

Finding Chart:

Motch et al (1996)

Brightness:

Optical: G=14.4 (Gaia); X-rays: 7.7x10^-11 ergs cm^-2s^-1 (BAT 157m; 14-195 keV), 3.9x10^-11 ergs cm^-2s^-1 (4XMM-DR11)

IP Credential:

***** (Ironclad) The orbital period has been established using optical spectroscopy, while the spin period is seen in multiple X-ray observations and in optical photometry; the beat period also seen in optical photometry.

Periods:

• Orbital: 0.2222041 d = 5.332898 hr = 19198.4 s.

  T0 = HJD 2450801.6342(16) + 0.2222041(3)

  (Thorstensen et al. 2010)
• Spin: 0.00362014 d = 5.123 min = 312.78 s.

  No good spin ephemeris known?

• Others: Beat period of 0.00367986 d = 5.299 min = 317.94s; also, a 0.01645 d = 1421 s period is reported?

Inclination:

?

Distance:

725.2 (716.3-734.3) pc (Gaia EDR3; parallax: 1.347+/-0.017 mas)

References

1. Haberl & Motch 1995 (X-rays)
2. Motch et al. 1996 (optical identification)
3. Norton et al. 1999 (X-ray timing)
4. Ramsay 2000 (X-ray spectroscopy)
5. Kozhevnikov 2001 (optical photometry)
6. Bonnet-Bidaud et al. 2001 (optical spectroscopy)
7. de Martino et al. 2001 (X-rays)
8. Suleimanov, Revnivtsev & Rimanov 2005 (X-ray spectroscopy)
9. Parker, Norton & Mukai 2005 (X-ray timing)
10. Falanga, Bonnet-Bidaud & Suleitter 2005 (X-ray spectroscopy)
11. den Hartog et al. 2006 (hard X-ray spectroscopy)
12. Barlow et al. 2006 (hard X-ray survey)
13. Revnivtsev et al. 2008 (analysis of INTEGRAL sample)
14. Suleimanov et al. 2008 (Compton scattering)
15. Landi et al. 2009 (X-rays)
16. Brunschweiger et al. 2009 (X-rays)
17. Tamburini, de Martino & Bianchini 2009 (optical photometry)
18. Scaringi et al. 2010 (X-rays)
19. Yuasa et al. 2010 (X-ray spectroscopy)
20. Thorstensen, Peters & Skinner 2010 (optical spectroscopy)
21. Galis et al. 2010 (X-rays)
22. Froning et al. 2012 (far ultraviolet)
23. Hric et al. 2014 (optical photometry)
24. Mukai et al. 2015 (X-ray spectroscopy)
25. Barrett et al. 2017 (radio)
26. Shaw et al. 2018 (X-ray spectroscopy)
27. Suleimanov, Doroshenko & Werner 2019 (X-ray spectroscopy)