19 Lyncis (Struve 1062)

Sketch of 19 Lyncis (Struve 1062/STF 1062)

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

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