22159+5440 BU 377 QR

Coord 2000	22159+5440		Discov num	BU  377		Comp	QR		Coord arcsec 2000	22 15 47.74 +54 40 11.5
Date first	1899		Date last	2015		Obs	7
Pa first	242		Pa last	232.5		P.A. Now (θ)	232.5°
Sep first	6.1		Sep last	6.81		Sep. Now (ρ)	6.81"
Mag pri	12.80		Mag sec	13.80		delta mag (ΔM)	1		Spectral class
Pri motion ra	-001		Sec motion ra
Pri motion dec	+021		Sec motion dec
Notes	N U (See Notes, Proper motion indicates non-physical)

This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	V447 Lac	34243	22 15 54 +54 40 22	BU 377 AB	2012	20	58	32.4	7.52	10.37	2.85
Show		34243	22 15 54 +54 40 22	BU 377 AC	2012	8	46	30.3	7.52	11.40	3.88
Show		34243	22 15 54 +54 40 22	BU 377 AD	2006	6	158	22.2	7.52	12.80	5.28
Show		34243	22 15 54 +54 40 22	BU 377 AQ	2012	5	258	59.8	7.52	14.06	6.54
Show		34243	22 15 54 +54 40 22	BU 377 AR	2003	3	257	63.4	7.52	13.80	6.28
Show		34243	22 15 54 +54 40 22	BU 377 AS	2015	6	334	55.5	7.52	12.62	5.10
Show		34243	22 15 54 +54 40 22	GIC 177 AT	2016	7	107	76.9	7.49	14.03	6.54
Show		34243	22 15 54 +54 40 22	HLA 31 AU	2016	1	248	8.9	5.90
Show		34243	22 15 54 +54 40 22	HLA 31 AV	2016	1	104	9.5	5.90
Show			22 15 58 +54 40 41	BU 377 BC	2015	18	303	6.7	10.37	11.40	1.03
Show			22 15 48 +54 40 12	BU 377 QR	2015	7	233	6.8	12.80	13.80	1.00		<===

Decuple system
10 estimated visually detectable stars in this system

Constellation

Lacerta

Gaia DR2

2005799072131388160

discov_num	notes	refcode
BU 377	AB: Optical pair, based on study of relative motion of the components
	using the method of apparent motion parameters.	Kiy2008
	AQ = BU 377Ab.
GIC 177	AT = G232-061/G232-062 = GJ 4268A+4269B.
BU 377	AC, AD: Rectilinear solutions by Friedman et al. (2011).	USN2011a

refcode	metd	author	reference
Kiy2008	-	Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S.	2008SvAL...32..405K
Kiy2008		SvAL 34, 405, 2008
USN2011a	lin -	Friedman, E.A., Mason, B.D., & Hartkopf, W.I.	2011IAUDS.175....1F
USN2011a		Inf. Circ. 175, 1, 2011

idgroup	discov	author
1	BU	Burnham, S.W. (BU 1 - 81)
179	GIC	Giclas, H., Burnham, R. & Thomas, N.
184	HLA	Hirsch, L.A., Ciardi, D.R., Howards, A.W., Marcy, G.W., Ruane, G., Gonzalez, E.,
184	HLA	Blunt, S., Crepp, J.R., Fulton, B.J., Isaacson, H., Kosiarek, M., Mawet, D.,
184	HLA	Sinukoff, E. & Weiss, L.
185	HLA	Hirsch, L.A., Rosenthal, L., Fulton, B.J., Howard, A.W., Ciardi, D.R., Marcy, G.W.,
185	HLA	Nielsen, E., Petigura, E.A., de Rosa, R.J., Isaacson, H., Weiss, L.M., Sinukoff, E.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
22159+5440	BU 377	QR	1999	2	233	6.6	12.80	13.80		N D	221547.74+544011.5
22159+5440	BU 377	QR	2003	3	233	6.7	12.80	13.80		NUD	221547.74+544011.5
22159+5440	BU 377	QR	2015	4	233	6.8	12.80	13.80		NU	221547.74+544011.5

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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

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