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auriga

14 Apr 2011 08:50



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revin cu informatii despre doua duble din categoria 8":

mu2 Boo am splitat-o usor: 
"Separated from the primary by 108 arcseconds in the sky is the binary star μ² Boötis, which has a combined spectral type of G1V and a combined brightness of +6.51 magnitudes. The components of μ² Boötis have apparent magnitudes of +7.2 and +7.8 and are separated by 2.2 arcseconds. They complete one orbit about their common centre of mass every 260 years."

mu2 Her este in Wds ca STF 2220, Aa-BC, m1: 3.42, m2: 9.78, sep. 34.9, pa: 249
si este greu de splitat.

un topic despre in [url=http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/2495358/page/4/view/collapsed/sb/9/o/all/fpart/1]CN: 
si citat de acolo:
"Mu Herculis BC (1.09”; 10.2, 10.7) – At the time of my observation, Mu Herc was only up about 45 degrees and the sky wasn’t as steady in that direction. Using the BO/TMB 3.2mm @ 875x, I was only able to get elongation on this pair. Part of the issue seems to be glaring from brighter “A” component and the dimness of the “BC” pair. Although I didn’t get a split on this one, I’m certain it will be conquered"