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Name
  NSV 25109  
AAVSO UID
000-BDC-286 (241 observations)  
Constellation
Cygnus Sequence
J2000.0
20 20 24.92 +49 42 11.6  (305.10383 +49.70322) Search nearby
B1950.0 20 18 55.63 +49 32 37.9
Proper motion
RA: -1.9 +/- 3.2 mas/yDec: -0.8 +/- 3.3 mas/ySource: UCAC4
Galactic coord. 85.795 +7.463
Other names

(Internal only)
2MASS J20202491+4942114 AAVSO_DES 2017+49 ASASSN-V J202024.84+494211.6
CMC15 J202024.9+494211 GSC2.3 N2ID063682 LD 22
UCAC4 699-076471    
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Variability type
M
Spectral type --
Mag. range
12.3 - <15.9 V
Discoverer L. Dahlmark
Epoch
13 Oct 1998 (HJD 2451100) Ephemeris
Outburst --
Period 435 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto J-K= 1.80.
2 GCVS Team B-V > 2. W-companion of the pair.
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References
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1 L.Dahlmark, IBVS N2157, 1982. 1982IBVS.2157....1D
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 = 5.73H = 4.68K = 3.93J - K = 1.80
AllWISE W1 = 3.59W2 = 3.21W3 = 2.15W4 = 1.61W1 - W2 = 0.38W3 - W4 = 0.54
Images
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Supporting Documents
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Revision History
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2 Otero, Sebastian Alberto 2017-01-05 06:26 UTC Type, period, epoch and range from AAVSO visual data. UCAC4 position.
1 Admin, VSX 2005-12-18 01:33 UTC Preserved original object data.