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Name
  BI Lyr  
AAVSO UID
000-BCW-297 (403 observations)  
Constellation
Lyra Sequence
J2000.0
18 57 51.88 +28 36 21.2  (284.46617 +28.60589) Search nearby
B1950.0 18 55 53.46 +28 32 15.3
Proper motion
RA: -7.3 +/- 7.3 mas/yDec: -5.6 +/- 7.3 mas/ySource: UCAC4
Galactic coord. 59.421 +11.327
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 1853+28 AN 343.1928 NSVS J1857517+283621
ROTSE1 J185751.64+283619.2 SVS 2873 V0489 Lyr
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Variability type
M
Spectral type --
Mag. range
11.6 - 17.8 V
Discoverer Cuno Hoffmeister
Epoch
19 May 1999 (HJD 2451318.0) Ephemeris
Outburst --
Period 254.4 d
Rise/eclipse dur. 43%  (109 d)
Remarks
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1 2016JAVSO..44..156K B-V= 1.52; V-R= 1.81
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References
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1 Karlsson, T.; Bengtsson, H.; Wikander, T.; et al., 2016, 50 forgotten Miras 2016JAVSO..44..156K
2 P.R. Wozniak, S.J. Williams, W.T. Vestrand, V. Gupta, AJ 128, 2965, 2004 2004AJ....128.2965W
3 C.Akerlof et al., AJ 119, 1901, 2000. 2000AJ....119.1901A
4 P.Ahnert, KVBB N24, 1941. 1941KVeBB...6....4A
5 C.Hoffmeister, Sonn Mitt N16, 1929. 1929MiSon..16....1H
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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 = 8.12H = 7.28K = 6.89J - K = 1.23
AllWISE W1 = 6.70W2 = 6.19W3 = 5.58W4 = 5.04W1 - W2 = 0.51W3 - W4 = 0.54
Images
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Supporting Documents
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Revision History
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3 Karlsson, Thomas 2017-03-10 22:16 UTC Elements, range, B-V and V-R from 2016JAVSO..44..156K. Discoverer from AN, 234, 33, 1928
2 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.