18211+7244 BUP 182 BC

Coord 2000	18211+7244		Discov num	BUP 182		Comp	BC		Coord arcsec 2000	18 21 02.31 +72 46 54.2
Date first	1908		Date last	2015		Obs	8
Pa first	302		Pa last	302.8		P.A. Now (θ)	302.8°
Sep first	10.2		Sep last	9.124		Sep. Now (ρ)	9.124"
Mag pri	12.10		Mag sec	14.50		delta mag (ΔM)	2.4		Spectral class
Pri motion ra	+000		Sec motion ra	+006
Pri motion dec	+010		Sec motion dec	+014
Notes	N (See Notes)

rPM=0.473 Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		9087	18 21 02 +72 43 58	LAB 5 Aa,Ab	2010	62	220	0.1	3.57	5.70	2.13	Y
Show	Chi Dra	9087	18 21 02 +72 43 58	BUP 182 AB	2008	6	357	177.8	3.57	12.10	8.53
Show			18 21 02 +72 46 54	BUP 182 BC	2015	8	303	9.1	12.10	14.50	2.40		<===

Quadruple system
3 estimated visually detectable stars in this system

Constellation

Draco

Tycho2

4437-00465-1

Gaia DR2

2266698230601414784

discov_num	notes	refcode
LAB 5	Aa,Ab: chi Dra = 44 Dra. Astrometric, interferometric, and
	spectroscopic binary. See discussion of the RV's by J. Vinter Hansen
	(Lick Obs. Bul. 19, 141, 1942).
	See discussion and orbital elements by Labeyrie et al. (1974).	Lab1974
	P, T, and e for Alden (1936) solution taken from spectroscopic orbit	Ald1936c
	Speckle and spectroscopic orbit by Tomkin et al. (1987), used P,e	Tom1987
	fixed from spectroscopy. Positional elements disagree somewhat with
	those of the astrometric orbit (prior to resolution of the companion)
	by Breakiron & Gatewood (1974).	Brk1974
	See Baize & Petit (1989) catalog of doubles with variable component.	Baz1989d
	Analyses of the spectroscopic/interferometric orbit are given by	McA1980b
	McAlister (1980) and McA1980c and Tomkin et al. (1987).	Tom1987
	Hipparcos astrometric solution adopted some elements from the orbit of	HIP1997d
	Tomkin et al. (1987).	Tom1987
	Pourbaix gives combined solution for this resolved SB2, yielding	Pbx2000b
	orbital parallaxes and component masses.
	The Farrington et al. (2010) orbit is based on speckle plus K'-band	CIA2010
	CHARA Array separated fringe packet observations. An orbital parallax
	of 123.4+/-1.9 mas is determined. Based on the mass ratio
	determination of Nordstrom et al. (2004 A&A 418, 989), derived masses
	are 0.96+/-0.03 and 0.75+/-0.03 Msun, well below the expected masses
	for an F8IV-V and late-G/early-K dwarf pair. The aperture and method,
	8m and speckle, are set to give the resolution capability of this
	technique, which is less than classical interferometric methods.
	Aa,Ab: Malkov et al. (2012) derive dynamical, photometric, and
	spectroscopic masses 1.71 +/- 0.06, 2.07, and 1.13 Msun, respectively.	Mlk2012

refcode	metd	author	reference
Ald1936c	orb -	Alden, H.L.	1936AJ.....45..113A
Ald1936c		AJ 45, 113, 1936
Baz1989d	-	Baize, P. & Petit, M.	1989A&AS...77..497B
Baz1989d		A&AS 77, 497, 1989
Brk1974	-	Breakiron, L.A. & Gatewood, G.	1974PASP...86..448B
Brk1974		PASP 86, 448, 1974
CIA2010	Kf j	Farrington, C.D., ten Brummelaar, T.A., Mason, B.D., Hartkopf, W.I., McAlister,	2010AJ....139.2308F
CIA2010	+orb	H.A., Raghavan, D., Turner, N.H., Sturmann, L., Sturmann, J., & Ridgway, S.T.
CIA2010		AJ 139, 2308, 2010
HIP1997d	orb -	Hipparcos	1997yCat.1239....0E
HIP1997d		Hipparcos Catalog, ESA SP-1200, 1997
HIP1997d		(DMSA/O Orbital Solutions)
Lab1974	S j	Labeyrie, A., Bonneau, D., Stachnik, R.V., & Gezari, D.Y.	1974ApJ...194L.147L
Lab1974	+orb	ApJ 194, L147, 1974
Lab1974		(data from Hale 5m, KPNO 3.8m, 2.1m. Aperture listed as mean value of 3.6m unless
Lab1974		specifically given in paper)
McA1980b	Sc j	McAlister, H.A. & Fekel, F.C.	1980ApJS...43..327M
McA1980b		ApJS 43, 327, 1980
Mlk2012	not -	Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A.	2012A&A...546A..69M
Mlk2012		A&A 546, A69, 2012
Pbx2000b	orb -	Pourbaix, D.	2000A&AS..145..215P
Pbx2000b		A&AS 145, 215, 2000
Tom1987	orb -	Tomkin, J., McAlister, H.A., Hartkopf, W.I., & Fekel, F.C.	1987AJ.....93.1236T
Tom1987		AJ 93, 1236, 1987

idgroup	discov	author
1	BUP	Burnham proper motion stars (see Burnham, Carnegie Inst. Wash. #168, 1913)

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18211+7244	BUP 182	BC	1908	1	302	10.2	11.80	13.30			182113.30+724622.0
18211+7244	BUP 182	BC	2008	2	303	9.3	11.80	13.30			182113.30+724622.0
18211+7244	BUP 182	BC	2010	4	301	8.8	12.10	14.50		N	182102.31+724654.2
18211+7244	BUP 182	BC	2015	4	303	9.1	12.10	14.50		N	182102.31+724654.2

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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

FoV: 30" 1' 5' 15' 30' 1° 2° 4° 5° 8° Limit: 2 3 4 5 10 15 20 25 30 50 100 Primaries only
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(') Show 18211+7244 BUP 182 BC 303 9.1 Show 18211+7244 LAB 5 Aa,Ab 220 0.1 3 Show 18211+7244 BUP 182 AB 357 177.8 3 Show 18241+7220 BVD 127 327 19.8 31 Show 18275+7316 TOI2253 291 26.3 41 Show 18118+7248 UC 3528 177 37.8 42 Show 18324+7245 CRB 205 208 12.5 51 Show 18273+7344 KPP1362 123 10.3 63 Show 18211+7137 GIC9022 318 2.0 71 Show 18053+7217 TDT 668 43 2.0 77 Show 18045+7316 HDS2544 29 6.9 79 Show 18400+7241 CFN 15 110 0.8 85 Show 18208+7120 STT 353 AB 262 0.5 87 Show 18208+7120 STT 353 AB,C 117 72.5 87 Show 18312+7131 WIS 328 182 940.0 90 Show 18263+7119 TDT 867 303 1.8 92 Show 18227+7421 TDT 824 275 1.2 95 Show 18072+7131 A 1168 327 0.7 100 Show 18317+7120 A 1170 188 0.9 100 Show 18022+7151 UC 235 353 32.8 103 Show 18371+7409 TDT 960 220 2.0 107 Show 18187+7447 KPP 695 11 6.2 121 Show 18186+7042 SKF2737 265 29.7 126 Show 18058+7101 TDS 904 108 0.9 128 Show 18164+7023 KPP4097 323 5.5 146 Show 18397+7455 LDS1889 340 3.9 148 Show 18168+7011 TDT 771 AB 55 0.6 157 Show 18339+7016 MLR 97 111 0.2 163 Show 18276+7000 LDS1886 44 96.0 170 Show 18338+7003 STF2370 135 10.5 176 Show 18343+7003 KPP 764 231 6.6 177 Show 18325+6957 STF2366 AB 333 29.8 179 Show 18325+6957 FOX9012 AC 249 10.3 179 Show 18393+6955 WFC 211 68 9.5 193 Show 18099+6941 ARR 1 53 1.2 194 Show 18028+7547 STF2302 AB 248 5.7 195 Show 18028+7547 STF2302 AC 278 22.9 195 Show 18028+7547 STF2302 BC 287 18.3 195 Show 18055+6945 TDT 673 241 2.0 197 Show 18319+7605 LOC 367 137 1.1 204 Show 18225+6924 UC 239 264 23.8 204 Show 18332+6929 SKF2738 333 15.2 207 Show 18335+6929 MLR 95 44 0.2 207 Show 18383+6937 CTI 848 280 1.0 208 Show 18393+6931 TOI1859 184 10.6 215 Show 18113+6915 STF2307 205 4.4 218 Show 18196+7636 HU 929 111 1.8 230 Show 18408+7624 MLR 214 30 0.4 231 Show 18216+6855 A 1169 304 1.0 233 Show 18029+7628 LOC 360 AB 243 1.3 233 Show 18145+6851 LDS1463 346 15.0 239

	A	Ab	B
Ab	pa=193.8° sep=0.11"
B	pa=359.9° sep=176.00"	pa=359.9° sep=176.11"
C	pa=359.2° sep=180.96"	pa=359.2° sep=181.07"	pa=335.3° sep=5.44"

Name	Chi Dra		Coord arcsec 2000	182102.38+724358.2		Mag	3.57		Spectral class	F7V (yellow-white)
PmRA	531.00		PmDE	-350.0		SAO	9087		HIP	89937
Tycho2	4437-01491-1		HD	170153		HR	6927		GC	25122
BD	BD+72 839		Bayer	Chi Draconis		Bayer name	Chi		Flamsteed	44 Draconis
Flamsteed name	44 Dra		FK5	695

Tycho2	4437-01491-1		Pflag	X		RAmdeg			DEmdeg
PmRA			PmDE			E RAmdeg			E DEmdeg
E pmRA			E pmDE			EpRAm			EpDEm
Num			Q RAmdeg			Q DEmdeg			Q pmRA
Q pmDE			BTmag	4.150		E BTmag	0.014		VTmag	3.614
E VTmag	0.009		Prox	999		TYC	T		HIP	89937
CCDM			RAdeg	275.25994278		DEdeg	72.73365667		EpRA 1990	1.67
EpDE 1990	1.62		E RAdeg	3.2		E DEdeg	3.2		Posflg
Corr	-0.1

SAO	9087		DelFlag			RA1950			PmRA1950	0.1169
DE1950			PmDE1950	-0.356		Vmag	3.7		SpType	F8
Double code			Source	74		CatNum	695		DM	BD+72 839
DMcomp			BDsup			HD	170153		M HD	0
GC	25122		RA1950rad	4.80819879		DE1950rad	1.2690587		PmRA2000	0.1196
PmDE2000	-0.349

Catalog	H		HIP	89937		Proxy			RAhms	18 21 02.34
DEdms	+72 44 01.3		Vmag	3.55		VarFlag			R Vmag	H
RAdeg	275.26		DEdeg	72.7337		AstroRef	+		Plx	124.11
CCDM	18211+7245		N CCDM	I		Nsys	1		Ncomp	1
MultFlag	O		Source			Qual			M HIP
Theta			Rho			HD	170153		BD	BD+72 839
CD			CP			Dm number	+72 839		VIred	0.62
SpType	F7Vvar		R SpType			Coord arcsec 2000	182102.34+724401.3

HIP	89937		Sn	75		So	4		Nc	1
RArad	4.804188834		DErad	1.269442503		Plx	124.11		PmRA	531.21
PmDE	-349.71		E RArad	0.9		E DErad	0.8		E Plx	0.87
E pmRA	1.03		E pmDE	0.94		Hpmag	3.6666		E Hpmag	0.0005
SHp	0.003		VA	0		BV	0.489		E BV	0.005
VI	0.62

Coord arcsec 2000

182102.37+724358.1

Mag

5.7

Calc delta mag

2.13

Calc coord

yes

Coord arcsec 2000	182102.31+724654.2		Coord calc	182102.31+724654.2		Mag	12.1		PmRA	0.00
PmDE	10.0		Tycho2	4437-00465-1		Calc delta mag	8.53

Tycho2	4437-00465-1		Pflag			RAmdeg	275.25964795		DEmdeg	72.78173460
PmRA	-5.9		PmDE	12.1		E RAmdeg	141		E DEmdeg	155
E pmRA	3.4		E pmDE	3.6		EpRAm	1968.51		EpDEm	1965.63
Num	2		Q RAmdeg			Q DEmdeg			Q pmRA
Q pmDE			BTmag	13.086		E BTmag	0.294		VTmag	12.102
E VTmag	0.178		Prox	999		TYC			HIP
CCDM			RAdeg	275.25969333		DEdeg	72.78170639		EpRA 1990	1.78
EpDE 1990	1.62		E RAdeg	161.7		E DEdeg	182.3		Posflg
Corr	-0.1

Coord arcsec 2000	182101.80+724659.1		Mag	14.5		PmRA	6.00		PmDE	14.0
Calc delta mag	10.93		Calc coord	yes