Sketch of AG 342
Click image to view larger version.
Observation Notes:
AG 342 is an orange-yellow/dull-orange pair, located at the thruster end of a star-destroyer asterism. The diffraction pattern was faint and difficult to pin down. This is a high proper motion pair (190 mas/yr) of K3V stars.
| Subject | AG 342 (TYC1978-179-1 & TYC1978-179-2; ADS 8002) |
| Classification | Double Star |
| Position (J2000)* | Leo [RA: 10 59 38.3 / Dec: +25 26 15.5] |
| Position Angle | AB: 112° [My Measurement 2009.9] AB: 112° [WDS 2008]* |
| Separation | AB: 6″ [My Measurement 2009.9] AB: 5.2″ [WDS 2008]* |
| Magnitudes* | A: 8.6; B: 9.2 |
| Spectral Types* | A: K3V; B: K3V |
| Date/Time | NOV 27, 2009 – 4:15 AM MST (NOV 27, 2009 – 11:15 UT) |
| Observing Loc. | Flagstaff, AZ – Home |
| Instrument | Orion SkyQuest XT8 Dobsonian (203 mm dia./1200 mm F/L) |
| Eyepieces/Mag. | Pentax XW10 + 2X Barlow (240X) Meade Astrometric EP + 2X Barlow (200X) |
| Conditions | Clear, cold, hazy |
| Seeing | 3-4/10 Pickering |
| Transparency | Mag 5.5 NELM |
| *References | The Washington Visual Double Star Catalog (Mason+ 2001-2009); Catalogue of Stellar Spectral Classifications (Skiff, 2009); SIMBAD; Double Stars for Small Telescopes – Sissy Haas |
I think we need a sketch of that star-destroyer asterism… 😉