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Latest Details
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Name
  HK Lyr  
AAVSO UID
000-BCW-312 (4280 observations)  
Constellation
Lyra Sequence
J2000.0
18 42 50.00 +36 57 30.9  (280.70833 +36.95858) Search nearby
B1950.0 18 41 05.64 +36 54 28.4
Proper motion
RA: 5.253 +/- 0.038 mas/yDec: 0.721 +/- 0.035 mas/ySource: Gaia DR1
Galactic coord. 66.076 +17.509
Other names

(Internal only)
AAVSO 1839+36 ASASSN-V J184249.91+365729.6 BD+36 3243
CGCS 4089 DO 16977 HD 173291
HIP 91774 IRAS 18410+3654 IRC +40325
RAFGL 2240    
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Variability type
SR
Spectral type C5II
Mag. range
7.5 - 8.4 V
Discoverer --
Epoch
21 Jan 1992 (HJD 2448642.7) Ephemeris
Outburst --
Period 186 d
Rise/eclipse dur. --
Remarks
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 The Hipparcos and Tycho Catalogues, Variability Annex: Periodic variables,
1997
1997HIP...C......0E
2 The HIPPARCOS and TYCHO catalogues 1997HIP...C......0E
External Links
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Location    Go   
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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 = 3.74H = 2.44K = 1.69J - K = 2.05
AllWISE W3 = 0.64W4 = 0.41W3 - W4 = 0.23
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 18 42 50.00 +36 57 30.9 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Campaigns/Programs
 Binocular program
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Admin, VSX 2012-03-15 03:49 UTC Update from [1997HIP...C......0E].
3 Otero, Sebastian Alberto 2011-07-27 05:06 UTC Range from Hipparcos/Tycho and AAVSO data.
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.