(IAAC) Obj: Kuma (Nu2 Dra) - Inst: Vixen 9x63 binoculars

[anonymous at sedna.atmob.org]

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Observation Poster: Stéphane Meloche <stephanemeloche at videotron.ca>

Observer: Stéphane Meloche
Your skills: Intermediate (some years)
Date/time of observation: 2007/04/21 6h07 UT 
Location of site: Ste-Catherine-de-Hatley, Québec, Canada (Lat 45.4542°, Elev 316 m)
Site classification: Suburban
Sky darkness: 5.2 <Limiting magnitude>
Seeing:  <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: Vixen 9x63 binoculars
Magnification: 
Filter(s): 
Object(s): Kuma (Nu2 Dra)
Category: Multiple star.
Class: 
Constellation: Dra
Data: mag 5.0 + 5.0  size 
Position: RA 17:32  DEC 55:11
Description:
In Draco, one of the 4 stars forming the head of the Dragon, the less bright of
the quartet. I had already observed this double star on April 20, 2001, almost 6
years ago! Another splendid double star Draco, the components are observed
individually without problems. In first seconds of observation, the two stars
appear of the same brightness to me but prolonged observations show that Nu2 Dra
(the eastern one of the 2) is slightly brighter than Nu1 Dra (in fact, the
difference in brightness between the components is only of 0,03 magv). Nu2 Dra
is white color whereas Nu1 Dra is blue.
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