Zeta Boötis (Struve 1865)

Observation Notes:

This is the closest double I've observed yet. It appeared as a single, slightly elongated star that points west-northwest/east-southeast. PA appears to be either 120° or 300°, depending on which star is the primary. According to notes in the WVDSC, the pair has a 123 year period.

SubjectZeta Bootis (âˆ'1865)
ClassificationDouble Star
Position (J2000)Bootes [RA: 14:41:09 / Dec: +13:43:41]*
Position Angle*303° (1991)
Separation*.91" (1991)
Magnitudes*4.5 / 4.6
Spectral Types*A2/A2
Date/TimeSEP 03, 2006 - 10:00 PM MST (SEP 04, 2006 - 05:00 UT)
Observing Loc.Flagstaff, AZ - Home
InstrumentOrion SVP 6LT Reflector (150 mm dia./1200 mm F/L)
Eyepieces/Mag.10 mm + 2X Barlow (240X)
ConditionsPartly cloudy, calm
TransparencyNELM Mag ~4.0
ReferencesTycho Double Star Catalogue (Fabricius+ 2002); The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996); and Catalog of Components of Double & Multiple Stars (Dommanget+ 2002) via VizieR

*Based on published data.

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This page contains a single entry by Jeremy Perez published on September 3, 2006 10:00 PM.

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