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Name
  BD+54 2511  
AAVSO UID
000-BNX-440 (No observations)  
Constellation
Cygnus Sequence
J2000.0
21 18 18.44 +55 15 38.3  (319.57683 +55.26064) Search nearby
B1950.0 21 16 47.19 +55 02 57.5
Galactic coord. 95.677 +4.100
Other names

(Internal only)
2MASS J21181844+5515379 GSC 03957-00565 IRAS 21167+5502
TYC 3957-565-1 UCAC4 727-071455  
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Variability type
SRB
Spectral type M6
Mag. range
9.97 - 11.12 V
Discoverer Stanislav Korotkiy, Kirill Sokolovsky, Olga Smolyankina
Epoch
31 Aug 2018 (HJD 2458361.9) Ephemeris
Outburst --
Period 195.8 d
Rise/eclipse dur. --
Remarks
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1 Sokolovsky, Kirill J-K = 1.7 +/-0.4. Spectral type from Buscombe & Foster (1999). Discovered while processing NMW survey images.
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References
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1 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0
2017PASP..129j4502K
2 Sokolovsky, K.; Korotkiy, S.; Lebedev, A., 2014, The New Milky Way: A
Wide-Field Survey of Optical Transients near the Galactic plane
2014ASPC..490..395S
3 Buscombe, W.; Foster, B. E., 1999, MK spectral classifications. Fourteenth
general catalogue, epoch 2000, including UBV photometry.
1999mscf.book.....B
External Links
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Location    Go   
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Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 21 18 18.44 +55 15 38.3 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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2 ASAS-SN V and g band lightcurves Sokolovsky, Kirill 2021-03-07 21:56 UTC
1 Phased ASAS-SN V and g band lightcurves shifted to a common zero-point Sokolovsky, Kirill 2021-03-07 21:56 UTC
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
1 Sokolovsky, Kirill 2021-03-10 11:48 UTC Initial submission.