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Name
  V0342 Aql  
AAVSO UID
000-BCG-055 (13287 observations)  
Constellation
Aquila Sequence
J2000.0
19 17 03.50 +09 20 39.0  (289.26458 +9.34417) Search nearby
B1950.0 19 14 40.12 +09 15 13.3
Galactic coord. 44.162 -1.371
Other names

(Internal only)
AAVSO 1912+09 ADS 12259 B AN 110.1935
BD+09 4048 HD 180639 HIP 94774
SAO 124466    
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Variability type
EA
Spectral type A4II
Mag. range
9.5 - 12.9 p
Discoverer --
Epoch
12 Jul 1966 (HJD 2439318.581) Ephemeris
Outburst --
Period 3.390882 d
Rise/eclipse dur. 14%  (11.39 h)
Remarks
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1 GCVS Team ADS 12259 B (A 7.5m; B 20", 14deg); d = 0.032P. P increases (see also [R.Szafraniec, SAC N29, 106, 1958., M.E.Baldwin, JRAS Can 73, N5, 320-324, 1979.]). Before JD2435600 Min = 2428023.550 + 3.390842d*E. Halpha emission observed at Max light [M.Plavec, R.S.Polidan, UCLA Astron. Papers 15, N21, 1976.]. The shape of the light curve and d apparently vary. Delta(m) probably decreases [R.Diethelm, K.Locher, H.Peter, BBSAG Bull N38, 1978.].
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References
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1 Samus, N. N.; Kazarovets, E. V.; Durlevich, O. V.; et al., 2017, General
Catalogue of Variable Stars: Version GCVS 5.1 (November 2019)		 2017ARep...61...80S
2 Bob Nelson's O-C files, 2016 --
3 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)		 2012arXiv1210.0821A
4 M. Kiraga, 2012, Acta Astronomica 62, 67 2012AcA....62...67K
5 M.E.Baldwin, JRAS Can 73, N5, 320-324, 1979. 1979JRASC..73..320B
6 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.		 --
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Supporting Documents
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
3 Otero, Sebastian Alberto 2020-05-23 03:27 UTC Period, epoch and eclipse duration from the GCVS (November 2019 version).
2 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.

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