Sketch of 19 Lyncis (Struve 1062)
Observation Notes:
The two main stars in this attractive multiple provided me with another unusual color contrast. The primary appeared yellow next to a rich blue secondary. Both stars are B class, so the appearance of the primary is illusory. I made measurements for the A, B and D components, but left the fainter C component out (2 o’clock position from center). It’s position in the sketch however, matches up well with catalogued measurements. The D component (11:45 position from center) appeared to have a cyan hue.
| Subject | 19 Lyncis (STF 1062) |
| Classification | Multiple Star |
| Position (J2000) | Lynx [RA: 7:22:52 / Dec: +55:16:52]* |
| Position Angle* |
A-B: 315° [2008.3 my measurement]; 315.6° [1999 Wycoff+] A-D: 3.5° [2008.3 my measurement]; 4.1° [1999 Wycoff+] B-C: 288.2° [1999 Wycoff+] |
| Separation* |
A-B: 15″; [2008.3 my measurement]; 14.7″ [1999 Wycoff+] A-D: 213″; [2008.3 my measurement]; 214.5″ [1999 Wycoff+] B-C: 74.2″ [1999 Wycoff+] |
| Magnitudes* | A: 5.45; B: 6.5; C: 10.9; D: 8.9 |
| Spectral Types* | A: B4V; B: B9V |
| Date/Time | APR 12, 2008 – 10:40 PM MST (APR 13, 2008 – 05:40 UT) |
| Observing Loc. | Flagstaff, Arizona, USA – Home |
| Instrument | Orion Skyview Pro 6LT (150 mm dia./1200 mm F/L) |
| Eyepieces/Mag. | 10 mm Sirius Plössl + 2X Barlow (240X) 12 mm Meade Astrometric EP + 2X Barlow (200X) |
| Conditions | Clear, first quarter moon |
| Seeing | 6/10 Pickering |
| Transparency | NELM Mag 5.0 |
| *References | The Washington Visual Double Star Catalog, Double stars measurements (Alzner 1998); Double stars in astrometric catalogs (Wycoff+, 2006); Catalogue of Stellar Spectral Classifications (Skiff, 2008); Starry Night Pro Plus |