BlackCAT A Catalog of Stellar-Mass Black Holes in X-ray Binaries

ID# 2

4U 1630-472

Nor X-1

RA (h:m:s)  DEC (º:':")  J2000:
16:34:01.61 -47:23:34.80
( Buxton1998 )

Galactic l (º)  b (º)  J2000:
336.9112429  +00.2502954

Year of discovery: 1969  
( Giacconi1972 Priedhorsky1986 )

# of outbursts after discovery: 21

Basic data

Distance (d) (kpc)
d above plane (z) (kpc)
Orbital period (h)
Peak X-ray flux 2.65E-08
(erg/s/cm2) [keV] XTE/ASM
Outburst magnitude (AB) K (not AB)=16.1 (mag) Augusteijn2001
Quiescent magnitude (AB) (mag)
E(B-V) 4.2 (mag) Callanan2000
Spectral type
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

Mag. Outburst (AB) Augusteijn2001
K (not AB)
Mag. Quiescence (AB)
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4U 1630-472 in Simbad
Finding charts orientation:North up, East left
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Object marked with lines

Finding chart
This research has made use of NASA's Astrophysics Data System (ADS) and the SIMBAD database operated at CDS (Strasbourg, France)
Please acknowledge the use of this catalogue in any published work you derive from it.