Lambda Arietis (Herschel 12)

October 18, 2006: To help provide a consistent style for my double star sketches, the above sketch is a digital update to the original sketch.

Observation Notes:

The primary star was yellowish with a blueish secondary. They made a good pair at low power (38X). The 240X view wasn’t as striking. I estimated PA at 50° and separation at 50″. Listed values from the AL double star list are 46° and 37″.

Subject Double/Multiple Star: Lambda Arietis (H 12)
Classification Multiple Star
Position Aries [RA: 01:57:54 / Dec: +23:36]*
Separation* 37″
Magnitudes* 4.9, 7.7
Position Angle* 46°
Date/Time 08/14/05 – 12:45 AM
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 Partly cloudy, calm, 55°F
Seeing 4/10
Transparency NELM Mag 5.8

*Based on published data.