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Latest Details
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Log in to retrieve additional aliases from SIMBAD. |
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| Name |
V1357 Cyg |
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| AAVSO UID |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
19 56 28.95 +35 03 54.8 |
| Proper motion |
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| Galactic coord. |
71.335 +3.067 |
Other names
(Internal only)
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1RXS J195821.9+351156 |
4U 1956+35 |
4U 1956+350 |
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AAVSO 1954+34 |
BD+34 3815 |
Cyg X-1 |
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HD 226868 |
HIP 98298 |
IOMC 2678000054 |
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SAO 69181 |
SVS 1808 |
UCAC4 627-087910 |
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X 19564+350 |
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(Not logged in) Add name
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| Variability type |
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HMXB/BHXB+ELL |
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| Spectral type |
O9.7Iab+BH |
| Mag. range |
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8.72 - 8.93 V |
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| Discoverer |
-- |
| Epoch |
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| Outburst |
-- |
| Period |
5.599824 d |
| Rise/eclipse dur. |
-- |
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Remarks
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Some references may be clicked to view in new window. Roll over index number to view submission details.
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1 |
Otero, Sebastian Alberto
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Microquasar. Black hole component. Gamma Ray emitter. |
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2 |
GCVS Team |
Cyg X-1. SB1. The epoch of the inferior conjunction of the optical component is given in the Table. Min II 8.88. The shape of the light curve varies; Min II sometimes are not observed. The periodicity in the light curve variations as well as in polarization changes is possible with P = 78.4d [J.C.Kemp, L.C.Herman, M.S.Barbour, AJ 83, 962-970, 1978., E.A.Karitskaya, Astron. Tsirk. N1088, 1979.]. Rapidly variable X-ray source in wide range up to 3 MeV characterized by the change of high and low states. Light and X-ray variation with P = 294d is also detected [R.K.Manchanda, ApSS 91, N2, 455, 1983., J.C.Kemp, IAU Circ N3780, 1983.]. Variable and flare radio source at 2695 and 8085 MHz. |
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References
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Click reference title/citation to view in new window. Roll over index number to view submission details.
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1 |
Corral-Santana, J. M.; Casares, J.; Muņoz-Darias, T.; et al., 2016,
WATCHDOG: A Comprehensive All-sky Database of Galactic Black Hole X-ray
Binaries |
2016ApJS..222...15T |
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2 |
J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info) |
2012arXiv1210.0821A |
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3 |
A Multiwavelength Study of Cygnus X-1: The First Mid-infrared Spectroscopic
Detection of Compact Jets |
2011ApJ...736...63R |
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4 |
C. Koen, L. Eyer, 2002, MNRAS 331, 45 |
2002MNRAS.331...45K |
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5 |
E.N.Walker, MN 177, 63P, 1975. |
1976MNRAS.177P..63W |
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6 |
V.M.Lyutyj, Perem. Zvezdy 18, N5, 417, 1972. |
1972PZ.....18..417L |
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External Links
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Location
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Catalog Data
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Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
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2MASS
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J = 6.87 | H = 6.65 | K = 6.50 | J - K = 0.37 |
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AllWISE
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W1 = 6.41 | W2 = 6.22 | W3 = 6.11 | W4 = 5.47 | W1 - W2 = 0.18 | W3 - W4 = 0.64 |
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APASS-DR9
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B = 9.56 | V = 8.69 | g' = 9.16 | r' = 8.42 | i' = 7.97 | B - V = 0.88 |
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Images
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Please review Digitized Sky Survey Acknowledgment and Copyright.
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Supporting Documents
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Revision History
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Currently approved revision is checked. Click revision number to view details of that revision.
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