Struve 1669

Observation Notes:

About a degree and a half south of the Sombrero Galaxy, M104, you'll find the multiple star, Struve 1669. The main attraction here is a pair of 6th magnitude F class stars. When observing them, don't forget to take in a third, tenth-magnitude star 1 arc minute to the southwest. The two brighter stars appeared to be separated by about 4 arc seconds, and resting at a PA of 315 degrees. Values in the Washington Double Star Catalog list 5.4" from 1828 and 312 degrees from 1991. Color was tough to nail down, and I eventually settled for pale yellow for the northwest star and white for the southeast companion. Give it a look the next time you're dancing around that nearby galactic hat and see what colors you perceive.

SubjectStruve 1669
ClassificationMultiple Star
Position (J2000)Corvus [RA: 12:41:15.8 / Dec: -13:00:49]*
Position Angle*AB: 312° (1991); AC: 235° (1900)
Separation*AB: 5.4" (1828); AC: 59" (1900)
Magnitudes*A: 6.0; B: 6.1; C: 10.5
Spectral Types*F5V; F5V; -
Date/TimeJAN 18, 2007 - 06:40 AM MST (JAN 18, 2007 - 13:40 UT)
Observing Loc.Flagstaff, AZ - Home
InstrumentOrion SVP 6LT Reflector (150 mm dia./1200 mm F/L)
Eyepieces/Mag.10 mm + 2X Barlow (240X)
ConditionsClear, calm, 11° F
Seeing4/10 Pickering
TransparencyNELM Mag ~5.0
ReferencesThe Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
*Based on published data.

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This page contains a single entry by Jeremy Perez published on February 22, 2007 9:11 PM.

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