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Name
  NSV 25495  
AAVSO UID
000-BFT-459 (1809 observations)  
Constellation
Cygnus Sequence
J2000.0
21 09 44.10 +37 49 33.0  (317.43375 +37.82583) Search nearby
B1950.0 21 07 45.63 +37 37 17.8
Proper motion
RA: -30.6 +/- 3.1 mas/yDec: -0.7 +/- 3.8 mas/ySource: UCAC4
Galactic coord. 82.008 -6.851
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 2105+37 ASASSN-V J210943.96+374933.3 GSC 03168-02663
LD 42 NSVS J2109439+374937  
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Variability type
L:
Spectral type --
Mag. range
11.8 - 13 V
Discoverer --
Epoch
--
Outburst --
Period 83 d
Rise/eclipse dur. --
Remarks
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1 Huziak, Richard [D.Boehme, MVS 10, H.2, 47, 1983.], "practically const." comment is not accurate. With CCD data, this star clearly shows a semi-regular behavior of approx. 60 day period, or possible twice this. R. Huziak
2 GCVS Team B-V ~ 1.7. According to [D.Boehme, MVS 10, H.2, 47, 1983.], practically const.
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References
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1 P.R. Wozniak, S.J. Williams, W.T. Vestrand, V. Gupta, AJ 128, 2965, 2004 2004AJ....128.2965W
2 L.Dahlmark, IBVS N2157, 1982. 1982IBVS.2157....1D
External Links
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Location    Go   
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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 = 6.41H = 5.48K = 5.12J - K = 1.29
AllWISE W1 = 4.88W2 = 4.65W3 = 4.03W4 = 3.19W1 - W2 = 0.23W3 - W4 = 0.84
APASS-DR9 B = 14.44V = 12.78g' = 13.46r' = 11.80B - V = 1.67
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 21 09 44.10 +37 49 33.0 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
2 Otero, Sebastian Alberto 2018-06-11 00:16 UTC Primary record creation.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.