WDS 12540+5558 BLM 2 (Alioth) : NOTES
 
 
discov_num notes refcode
BLM 2 eps UMa = 77 UMa = Alioth.
An Alpha CVn-type variable and eclipsing system.
1975.383: Erroneously listed as HD 112815 in Morgan et al. (1978) BLM1978
notes.
The Yale Bright Star Catalogue cites this star as a spectroscopic Hof1982
variable with periods of 4.15 years and 0.95 days; the object is also
a photometric variable with period 5.09 days. This observation
presumably resolved the longer period system. BLM1978
 
 
REFERENCES
 
 
refcode metd author reference
BLM1978 S j Morgan, B.L., Beddoes, D.R., Scaddan, R.J. & Dainty, J.C. 1978MNRAS.183..701M
BLM1978 MNRAS 183, 701, 1978
Hof1982 - Hoffleit, D. & Jaschek, C. 1982bscf.book.....H
Hof1982 The Bright Star Catalogue, Fourth Revised Edition, 1982
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12540+5558 BLM 2 1975 1 95 0.1 1.77   A0p N 125401.63+555735.4
12540+5558 BLM 2 2002 2 60 0.1 1.77   A0p N D 125401.63+555735.4

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