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  CI Aql  
000-BCD-453 (3459 observations)  
Aquila Sequence
18 52 03.56 -01 28 39.2  (283.01485 -1.47755) Search nearby
B1950.0 18 49 28.11 -01 32 19.8
Proper motion
RA: 2.8 +/- 5.0 mas/yDec: 7.8 +/- 5.0 mas/ySource: UCAC4
Galactic coord. 31.688 -0.812
Other names

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AAVSO 1846-01 AN 23.1925 Downes CI Aql
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Variability type
Spectral type cont
Mag. range
8.5 V - 16.3 V
Discoverer K. Reinmuth
04 Jun 1991 (HJD 2448412.167) Ephemeris
Outburst 1917
Period 0.6183609 d  (14.84066 h)
Rise/eclipse dur. --
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Click reference title/citation to view in new window. Roll over index number to view submission details.
1 Samus, N. N.; Kazarovets, E. V.; Durlevich, O. V.; et al., 2017, General
Catalogue of Variable Stars: Version GCVS 5.1 (November 2019)
2 Comprehensive Photometric Histories of All Known Galactic Recurrent Novae 2010ApJS..187..275S
3 R.A.Downes, 2001, PASP 113, 764 (2006 archival) 2005JAD....11....2D
4 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
5 The 2000 outburst of the recurrent nova CI Aquilae 2001A&A...366..858K
6 CI Aql: a New Short-Period Eclipsing Binary 1995IBVS.4232....1M
7 Catalogue of Stellar Spectral Classifications (Skiff, 2009-2016) 1992ApJS...78..537S
8 P.P.Parenago, Perem. Zvezdy 3, 99, 1931. --
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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 = 13.67H = 13.33
Please review Digitized Sky Survey Acknowledgment and Copyright.
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Supporting Documents
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Revision History
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6 Otero, Sebastian Alberto 2020-05-24 13:19 UTC Maximum magnitude from the GCVS (November 2019 version). Gaia DR2 position.
5 Admin, VSX 2017-12-15 07:39 UTC Spectral type from Skiff (VizieR on-line data: B/mk)
4 Otero, Sebastian Alberto 2011-11-01 19:52 UTC Minimum magnitude and period from 2010ApJS..187..275S.
3 Otero, Sebastian Alberto 2009-08-12 23:52 UTC New type from reference. Elements and magnitudes from IBVS 4232. Position from Downes catalogue.
2 Admin, VSX 2007-03-23 15:52 UTC Discoverer added.
1 Admin, VSX 2005-12-17 20:33 UTC Initial database population.