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Details for Revision 3
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Name
  NSV 13909  
AAVSO UID
000-BCP-460 (No observations)  
Constellation
Cepheus Sequence
J2000.0
21 52 01.04 +55 47 48.3  (328.00433 +55.79675) Search nearby
B1950.0 21 50 19.48 +55 33 40.3
Galactic coord. 99.567 +1.288
Other names

(Internal only)
2MASS J21520103+5547484 ADS 15405 ADS 15405 A
ALS 17322 ASCC 213011 BD+55 2639
CCDM J21520+5548A GC 30627 GCRV 13743
GSC 03972-02736 Gaia DR3 2174870184851810048 HD 208095
HIP 107930 HR 8357 IDS 21486+5519 A
PMC 90-93 4789 PPM 39939 SAO 33819
SBC7 882 SBC9 1339 TIC 331268750
TYC 3972-2736-1 WDS J21520+5548A  
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Variability type
SPB:
Spectral type B6IV-V
Mag. range
5.68 - 5.71 V
Discoverer --
Epoch
07 Sep 2015 (HJD 2457272.66) Ephemeris
Outburst --
Period 2.91 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Constant according to 1972PASP...84..563K. Variations with P= 2.91 reported in 2018arXiv180602247B actually come from NSV 25779 (V= 6.6; sep. 18").
2 GCVS Team ADS 15405A (B 7.0, 19".8, 197deg, 1925). SB, P=17d.3.
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References
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1 Huang, C. X.; et al., 2020, Photometry of 10 Million Stars from the First
Two Years of TESS Full Frame Images: Part I
2020RNAAS...4..204H
2 O. Burggraaff, G.J.J. Talens, J. Spronck et al., 2018, Studying bright
variable stars with the Multi-site All-Sky CAmeRA (MASCARA)
2018arXiv180602247B
3 Kameswara Rao, N., 1972, Light Variations of Three Spectroscopic Binaries 1972PASP...84..563K
4 J.R.Percy, K.Madore, Bamb Ver 9, No.100, 197-203, 1971. --
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Supporting Documents
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Revision History
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4 Otero, Sebastian Alberto 2025-03-03 22:11 UTC Type from 1972PASP...84..563K and TESS QLP data. Mean magnitude from the GCPD.
3 Otero, Sebastian Alberto 2018-08-29 08:57 UTC Type corrected based on period. Range from GCPD data. Gaia DR2 position.
2 Admin, VSX 2018-08-29 00:25 UTC Update from [2018arXiv180602247B].
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.