During a trip to Oklahoma, I brought the telescope along in hopes of doing some observing. But with clouds and constant wind, I got very little done. This was the one observation I was able to sketch and present. The A and B stars of this multiple were golden yellow in color and similar in brightness. I estimated PA at 228° with a 30 arcsecond separation. The actual AB values are 236° and 20.6 arcseconds. The C component didn’t display any obvious color and appeared to rest at 140° with a separation of about 200 arcseconds. The actual AC value is 128° and 221.6 arcseconds.
|Subject||40, 41 Draconis (STF 2308)|
|Position (J2000)||Draco[RA: 18:00:09.3 / Dec: +80:00:15]*|
|Position Angle*||AB: 236° (1832) / AC 128° (1932)|
|Separation*||AB: 20.6″ (1832) / AC 221.6″ (1932)|
|Magnitudes*||A: 5.68 / B: 6.04|
|Spectral Types*||K2V / K2V / G5|
|Date/Time||MAR 19, 2007 – 12:05 AM MST (MAR 19, 2007 – 07:05 UT)|
|Observing Loc.||Elk City, OK (Flying W Guest Ranch)|
|Instrument||Orion SVP 6LT Reflector (150 mm dia./1200 mm F/L)|
|Eyepieces/Mag.||10 mm + 2X Barlow (240X)|
|Conditions||Partly Cloudy, Breezy|
|Transparency||NELM Mag ~5.0|
|References||The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996); The Tycho-2 Spectral Type Catalog (Wright+, 2003)|
*Based on published data.