12454+1422 STF 1678 (HD 110932)

Coord 2000	12454+1422		Discov num	STF1678		Comp			Coord arcsec 2000	12 45 26.17 +14 22 24.9
Date first	1825		Date last	2018		Obs	143
Pa first	213		Pa last	170		P.A. Now (θ)	170°
Sep first	33.4		Sep last	37.5		Sep. Now (ρ)	37.5"
Mag pri	7.16		Mag sec	7.68		delta mag (ΔM)	0.52		Spectral class	B8V (blue-white)
Pri motion ra	-050		Sec motion ra	+081
Pri motion dec	+004		Sec motion dec	-044
Notes	N L Y (See Notes, Linear solution, Parallax indicates components are non-physical)

rPM=1.514 This double is not physical.

Name	HD 110932		Constellation	Coma Berenices		SAO	100236		HIP	62248
Tycho2	0881-00563-1		Gaia DR2	3929385971892400128		HD	110932		GC	17345
ADS	8659		BD	BD+15 2503		Distance	230.41		Distance ly	751.6

discov_num	notes	refcode
STF1678	STTA120 = STFA 22. B is BD+15@2503.
	Optical pair, based on study of relative motion of the components
	using the method of apparent motion parameters.	Kiy2008

refcode	metd	author	reference
Kiy2008	-	Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S.	2008SvAL...32..405K
Kiy2008		SvAL 34, 405, 2008

idgroup	discov	author
1	STF	Struve, F.G.W.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
12454+1422	STF1678		2007	116	171	36.8	7.16	7.68	B8V	NLD	124526.17+142224.9
12454+1422	STF1678		2008	117	171	36.8	7.16	7.68	B8V	NLD	124526.17+142224.9
12454+1422	STF1678		2010	121	171	37.1	7.16	7.68	B8V	NLD	124526.17+142224.9
12454+1422	STF1678		2011	122	171	37.7	7.16	7.68	B8V	NLD	124526.17+142224.9
12454+1422	STF1678		2014	124	170	37.4	7.16	7.68	B8V	NLDY	124526.17+142224.9
12454+1422	STF1678		2017	126	170	37.7	7.16	7.68	B8V	NL Y	124526.17+142224.9
12454+1422	STF1678		2018	128	170	37.7	7.16	7.68	B8V	NL Y	124526.17+142224.9

If you need more information about this double, apply for a data request form to the WDS.

Show	date	username	difficulty	separation	pa_estim	interest	notes
Show	23/04/14	Daedalus1	very difficult	separated	170		Very nice pair of contrasting stars. Seeing was awful! Pickering 3, very poor.

Show	date	username	difficulty	sep	sep_sigma	pa	pa_sigma	delta_mag	#	notes
Show	23/04/14	Daedalus1	very difficult	38.83	0.16	170.00	0.00	0.51	12	Seeing: Pickering 3, very poor. Bad seeing caused this measure to be very difficult.

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Radius: auto 0.5" 0.8" 1" 2" 3" 5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 1' 2' 3' 4' 5' 6' 7' 8' 9' 10' 15' 20' 30' 40' 50' 1° 2° 4° 5° 8° Components only

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS