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Latest Details
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Name
  AB And  
AAVSO UID
000-BCR-289 (31703 observations)  
Constellation
Andromeda Sequence
J2000.0
23 11 32.09 +36 53 35.1  (347.88371 +36.89308) Search nearby
B1950.0 23 09 08.64 +36 37 19.0
Proper motion
RA: 108.083 +/- 0.093 mas/yDec: -53.544 +/- 0.075 mas/ySource: Gaia DR1
Galactic coord. 101.604 -21.807
Other names

(Internal only)
1RXS J231131.8+365331 AAVSO 2306+36 AN 8.1927
BD+36 5017 HIP 114508 SAO 73069
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Variability type
EW
Spectral type G5+G5V
Mag. range
9.61 - 10.47 V
Discoverer --
Epoch
02 Oct 2018 (HJD 2458394.4267) Ephemeris
Outburst --
Period 0.3318912 d  (7.96539 h)
Rise/eclipse dur. --
Remarks
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1 Quadri, Ulisse Min II = 10.30 V. O'Connell effect
2 GCVS Team Min II 10.20. P var. Period increased suddenly in 1953 ( ~JD2434500); no period changes later [L.Binnendijk, AJ 64, 65, 1959., A.Purgathofer, F.Prochazka, Wien Mitt 13, N10, 151, 1967.]. Elements since 1953 - see Table.
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References
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1 Bob Nelson's O-C files, 2016 --
2 W.Quester, IBVS N190, 1967. 1967IBVS..190....1Q
3 P.Guthnick, R.Prager, KVBB N4, 1927. 1927KVeBB...1....4G
4 CALEB - Catalog and AtLas of Eclipsing Binaries --
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 = 8.17H = 7.80K = 7.67J - K = 0.51
AllWISE W1 = 7.55W2 = 7.65W3 = 7.55W4 = 7.50W1 - W2 = -0.10W3 - W4 = 0.05
APASS-DR9 B = 10.49V = 10.26g' = 10.94r' = 9.98i' = 9.69B - V = 0.23
GALEX-DR5 FUV = 19.98NUV = 16.13FUV - NUV = 3.85
Images
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Supporting Documents
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1 Phase plot Quadri, Ulisse 2018-10-21 18:58 UTC Phase plot from VESPA project at (IAU Station 565) Bassano Bresciano Observatory, BS, Italy.
http://www.osservatoriobassano.org
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Revision History
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3 Quadri, Ulisse 2018-10-21 18:58 UTC Epoch, range and phase plot in 3 photometric filters from IAU station 565 - Bassano Bresciano Observatory.
2 Admin, VSX 2010-01-04 23:43 UTC Update from the GCVS version of November 2009.
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.