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Details for Revision 1
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Name
  NSV 25023  
AAVSO UID
--  
Constellation
Cygnus Sequence
J2000.0
20 09 24.50 +34 43 00.0  (302.35208 +34.71667) Search nearby
B1950.0 20 07 29.88 +34 34 07.2
Galactic coord. 72.130 +0.893
Other names

(Internal only)
1RXS J200923.7+344259 BD+34 3888 GSC 02679-01140
HD 191588 HIP 99301 LF 3a +34 205
PPM 84329 SAO 69515 TYC 2679-1140-1
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Variability type --
Spectral type G8III
Mag. range
8.34 - 8.48 Hp
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Triple system, the inner RS CVn-binary has a period of 60.0269 d. M-type dwarf companion with a period of 1667 d. HIPPARCOS data show very long-term mean magnitude changes.
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References
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1 MASCARA Variable star catalogue (online data) 2018arXiv180602247B
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 Griffin, R. F.; et al., 2003, Contribution à l'étude des binaires des types
F, G, K, M. IX. HD 191588, nouvelle binaire spectroscopique à raies simples
de types RS CVn, système triple
2003RoAJ...13...31G
4 The Hipparcos and Tycho Catalogues, Vol.11 and Vol.17, CD-ROM No.1,
SP-1200, ESA, 1997.
1997ESASP1200.....P
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Supporting Documents
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Revision History
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3 Admin, VSX 2018-08-29 00:26 UTC Update from [2018arXiv180602247B].
2 Otero, Sebastian Alberto 2016-01-16 00:27 UTC Range and position from HIPPARCOS data. Type, spectral type and periods from 2003RoAJ...13...31G.
1 Admin, VSX 2005-12-18 01:33 UTC Preserved original object data.