4U 1630-472
Nor X-1
(Buxton1998)
RA (ICRS) DEC
[hh:mm:ss.ss] [dd:mm:ss.ss]
16:34:01.61 -47:23:34.80
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ℓ b
[deg] [deg]
336.9112429 00.25029536
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# of outbursts after discovery:
>20
Basic data
Distance [kpc] |
4.7-11.5 |
Kalemci2008 |
Distance to the plane (z) [kpc] |
0.02 – 0.05 |
Kalemci2008 |
Orbital period (Porb) [h] |
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Peak X-ray flux [erg s-1 cm-2] [keV] |
2.65E-08 [2-10] |
XTE/ASM |
Outburst magnitude (AB) |
K (not AB)=16.1 |
Augusteijn2001 |
Quiescent magnitude (AB) |
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E(B-V) [mag] |
4.2 | Callanan2000 |
Spectral type |
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NOTES
4U 1630-472: The peak X-ray flux was obtained from the 2003 outburst (Tomsick2005) , the brightest one detected so far. It has shown quasi-periodic outburst with recurrence times of ∼600-700 d and durations of 100-200 d (Kuulkers1997). The K-band magnitude was not transformed into AB system. |
Optical/NIR magnitudes
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K (not AB)=16.1 |
Mag. Quiescent (AB)
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