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Name
  4U 1954+31  
AAVSO UID
000-BKR-938 (20 observations)  
Constellation
Cygnus Sequence
J2000.0
19 55 42.34 +32 05 49.0  (298.92642 +32.09694) Search nearby
B1950.0 19 53 45.29 +31 57 48.2
Proper motion
RA: -1.361 +/- 1.407 mas/yDec: -5.070 +/- 1.131 mas/ySource: Gaia DR1
Galactic coord. 68.392 +1.927
Other names

(Internal only)
1H 1958+325 1M 1953+319 1RXS J195541.5+320546
2MASS J19554232+3205492 2U 1954+31 3A 1954+319
3U 1953+31 4U 1954+319 ASASSN-V J195542.30+320549.3
DO 18341 GPS 1954+319 GSC 02673-02004
H 1954+319 INTREF 997 IRAS 19537+3157
PBC J1955.6+3205 SWIFT J1955.8+3203 TYC 2673-2004-1
[KRL2007b] 369    
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Variability type
ZAND+LMXB/XP
Spectral type M4/5III
Mag. range
10.01 (0.1:) V
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 Otero, Sebastian Alberto Symbiotic X-ray binary. Pulse period: 5.3 hours (2011ApJ...742L..11M). APASS V= 10.01 (B-V= 2.17). Tycho V= 10.02 (B-V= 1.91). Tycho-2 V= 9.92 (B-V= 1.98). UCAC3 derived V= 10.01. CMC14 derived V= 9.96.
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 Marcu, D. M., et al., 2011, The 5 hr Pulse Period and Broadband Spectrum of
the Symbiotic X-Ray Binary 3A 1954+319		 2011ApJ...742L..11M
2 Masetti, N., et al., 2006, M-type giants as optical counterparts of X-ray
sources 4U 1700+24 and 4U 1954+319		 2006A&A...453..295M
External Links
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Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
2MASS J = 4.91H = 3.88K = 3.50J - K = 1.40
AllWISE W1 = 3.39W2 = 3.36W3 = 3.33W4 = 3.15W1 - W2 = 0.03W3 - W4 = 0.17
APASS-DR9 B = 12.09V = 10.01g' = 10.89B - V = 2.07
Images
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Supporting Documents
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Revision History
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1 Otero, Sebastian Alberto 2012-10-10 07:33 UTC Initial submission.

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