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Latest Details
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| Name |
V1341 Cyg |
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| AAVSO UID |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
21 42 36.90 +38 05 26.6 |
| Proper motion |
| RA: 1.6 +/- 4.7 mas/y | Dec: 7.5 +/- 4.3 mas/y | Source: UCAC4 |
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| Galactic coord. |
87.328 -11.316 |
Other names
(Internal only)
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1RXS J214429.0+381913 |
2MASS J21444115+3819170 |
3U 2142+38 |
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AAVSO 2140+37 |
Cyg X-2 |
IOMC 3184000081 |
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X 21426+380 |
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(Not logged in) Add name
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| Variability type |
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LMXB+E |
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| Spectral type |
A5-F2III-IVep |
| Mag. range |
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14.41 - 15.78 B |
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| Discoverer |
-- |
| Epoch |
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| Outburst |
-- |
| Period |
9.8435 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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V= 14.5. |
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2 |
GCVS Team |
Cyg X-2. SB1. Halo object (nu = -220 km/s). Strong reflection effect changes the spectral type of the F component. Spectral line profiles vary. The lines of He II, KCa II, C III,and N III are in emission. The system has low and high states. During the low state the mean light curve is a double wave with the range 15.1m - 15.4m B. Epoch of Min I given in the Table corresponds to the F star in superior conjunction; Min II 15.4. The eclipse of the accretion disk at the phase 0.5P in partial. Rapid light variability by 0.1m in 10 minutes and by 0.5m in several hours is superimposed. In the high states lasting for ~10d the mean light increases by 0.5m. Radio source at 8085 MHz, source of soft and hard X-ray emission from 0.1 to 60 KeV. |
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(Not logged in) Add remark
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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 |
Gaia Collaboration; et al., 2018, Gaia Data Release 2. Summary of the
contents and survey properties |
2018A&A...616A...1G |
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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 catalogue of low-mass X-ray binaries in the Galaxy, LMC, and SMC (Fourth
edition) |
2007A&A...469..807L |
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4 |
A.P.Cowley, D.Crampton, J.B.Hutchings, ApJ 231, 539, 1979. |
1979ApJ...231..539C |
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5 |
R.Giacconi, P.Gorenstein, H.Gursky, P.D.Usher, J.R.Waters, A.Sandage,
P.Osmer, J.V.Peach, ApJ 148, L129, 1967. |
1967ApJ...148L.129G |
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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 = 13.40 | H = 13.15 | K = 13.05 | J - K = 0.35 |
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AllWISE
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W1 = 12.94 | W2 = 12.77 | W3 = 11.60 | W1 - W2 = 0.17 |
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APASS-DR9
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B = 15.13 | V = 14.68 | g' = 14.85 | r' = 14.56 | i' = 14.43 | B - V = 0.45 |
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Images
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Supporting Documents
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Revision History
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