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Name
  ZALD J21290820+5451349  
AAVSO UID
000-BNH-196 (No observations)  
Constellation
Cygnus Sequence
J2000.0
21 29 08.20 +54 51 34.9  (322.28417 +54.85969) Search nearby
B1950.0 21 27 32.57 +54 38 24.2
Galactic coord. 96.501 +2.726
Other names

(Internal only)
1SWASP J212908.20+545134.9 2MASS J21290820+5451349 AS 521
EM* AS 521 GALEX J212908.3+545134 GGR 26
GSC 03970-00907 HBHA 5203-09 HPX 5991498
MHA 255-77 NPM2 +54.1561 NSVS 3286342
NSVS 3399107 PPMX J212908.2+545134 TASS4 3287447
TIC 316719464 TYC 3970-907-1 UCAC4 725-077475
USNO-A2.0 1425-11920691 USNO-B1.0 1448-0359423 WISE J212908.19+545134.9
WISEA J212908.20+545134.9    
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Variability type
GCAS
Spectral type B5e
Mag. range
11.23 - 11.46 V
Discoverer Alexander N. Zaitsev (ZALD)
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Schmeer, Patrick An outburst began on 2018 December 2 (ASAS-SN Sky Patrol data). Gaia DR2 parallax 0.8027 ± 0.0307 mas (distance 1.20 ± 0.05 kpc). Uniform disk diameter 0.037" (2014ASPC..485..223B).
2 Zaitsev, Alexander B-V= 0.75; J-K= 0.33.
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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 Chen, P. S.; Liu, J. Y.; Shan, H. G., 2016, A new approach to the infrared
photometric study of Be stars.
2016MNRAS.463.1162C
3 Bourgés, L.; Lafrasse, S.; Mella, G.; et al., 2014, The JMMC Stellar
Diameters Catalog v2 (JSDC): A New Release Based on SearchCal Improvements
2014ASPC..485..223B
External Links
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Images
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Supporting Documents
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1 JD Light Curve Zaitsev, Alexander 2019-10-17 10:05 UTC JD Light Curve plot with ASAS-SN data, measurements from g filter shifted to V magnitude (V=g-0.36).
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Revision History
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2 Schmeer, Patrick 2019-10-31 23:54 UTC "Eruption" year deleted.
1 Zaitsev, Alexander 2019-10-18 14:36 UTC Initial submission. Position from Gaia DR2.
Spectral type from 2016MNRAS.463.1162C