Theta Serpentis (Struve 2417)

Observation Notes:

Poor seeing chopped the view up a bit on this double. The primary appeared light blue with a subtly yellow secondary. Both stars are A5V however. PA appeared to be 110° with a separation about 30 arc seconds. Actual values are 104° and 22.3 arc seconds.

Subject Theta Serpentis (STF 2417)
Classification Double Star
Position (J2000) Serpens: [RA: 18:56:13.2 / Dec: +04:12:13]*
Position Angle* 104° (1984)
Separation* 22.3″ (1984)
Magnitudes* 4.62/4.98
Spectral Types* A5V/A5V
Date/Time SEP 04, 2006 – 1:10 AM MST (SEP 04, 2006 – 08:35 UT)
Observing Loc. Flagstaff, AZ – Home
Instrument Orion SVP 6LT Reflector (150 mm dia./1200 mm F/L)
Eyepieces/Mag. 10 mm + 2X Barlow (240X)
Conditions Clear, calm

Seeing 4/10
Transparency NELM Mag ~4.0
References The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996) and Catalogue of Stellar Spectral Classifications (Skiff, 2005) via VizieR

*Based on published data.

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