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Name
  BL Tel  
AAVSO UID
000-BCX-337 (4844 observations)  
Constellation
Telescopium Sequence
J2000.0
19 06 38.11 -51 25 03.2  (286.65879 -51.41756) Search nearby
B1950.0 19 02 43.87 -51 29 42.3
Proper motion
RA: -6.171 +/- 0.034 mas/yDec: 0.251 +/- 0.026 mas/ySource: Gaia DR1
Galactic coord. 345.525 -23.155
Other names

(Internal only)
AAVSO 1858-51 AN 950.1935 CD-51 11917
CPD-51 11113 HD 177300 HIP 93844
HV 9587 SAO 245923  
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Variability type
EA/GS+SRD
Spectral type F4Ib+M
Mag. range
7.09 - 9.08 V
Discoverer --
Epoch
11 Sep 1983 (HJD 2445589.05) Ephemeris
Outburst --
Period 778.0 d
Rise/eclipse dur. 10%
Remarks
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1 Otero, Sebastian Alberto Possible UU Her-subtype (double mode pulsator, P0= 92.5 d, P1= 64.8 d.)
2 GCVS Team The depth of Min II - 0.1m pg. Semiregular variability of pulsational character (7.09m - 7.26m V) is observed outside eclipses; sometimes it may be represented by P = 65.1d, but sometimes (1969) it cannot be traced.
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References
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1 1994A&A...286..870Z Zsoldos, E., 1994, A&A, 286, 870
2 LTPV I, II, III, IV Sterken, C., Manfroid, J. et al., 1995, A&AS, 113, 31
3 The All Sky Automated Survey Pojmanski, G., 2002, Acta Astronomica, 52, 397
4 The Hipparcos Catalogue Perryman, M.A.C., et al., 1997, A&A, 323, 49
5 A.M. van Genderen, AsAp 119, 265, 1983. 1983A&A...119..265V
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 = 5.85H = 5.25K = 4.97J - K = 0.88
AllWISE W1 = 4.71W2 = 4.51W3 = 4.53W4 = 4.36W1 - W2 = 0.19W3 - W4 = 0.17
APASS-DR9 B = 7.80V = 7.21g' = 7.56r' = 7.05i' = 6.82B - V = 0.60
GALEX-DR5 FUV = 18.02NUV = 13.50FUV - NUV = 4.52
Images
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Supporting Documents
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1 BL Tel Min I Otero, Sebastian Alberto 2006-07-31 15:54 UTC Lightcurve showing the primary minima of BL Telescopii
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Campaigns/Programs
 Binocular program
Revision History
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3 Otero, Sebastian Alberto 2006-07-31 11:54 UTC Improved period with the whole photometric history of the star
2 Otero, Sebastian Alberto 2006-07-29 17:45 UTC --
1 Admin, VSX 2005-12-17 20:33 UTC Initial database population.