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Doubles in session


Current system
18211+7244
BUP 182 AB
Chi Dra


Nearby doubles
28' : 18241+7220
BVD 127

42' : 18118+7248
UC 3528

43' : 18275+7316
TOI2253

51' : 18324+7245
CRB 205

66' : 18273+7344
KPP1362

68' : 18211+7137
GIC9022

76' : 18053+7217
TDT 668

80' : 18045+7316
HDS2544

84' : 18208+7120
STT 353AB

85' : 18400+7241
CFN 15

87' : 18312+7131
WIS 328

89' : 18263+7119
TDT 867

97' : 18072+7131
A 1168

98' : 18317+7120
A 1170

98' : 18227+7421
TDT 824

102' : 18022+7151
UC 235

110' : 18371+7409
TDT 960

123' : 18186+7042
SKF2737

124' : 18187+7447
KPP 695

126' : 18058+7101
TDS 904

143' : 18164+7023
KPP4097

151' : 18397+7455
LDS1889

154' : 18168+7011
TDT 771AB

160' : 18339+7016
MLR 97

167' : 18276+7000
LDS1886

173' : 18338+7003
STF2370



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18211+7244 BUP 182 AB (Chi Dra)

 
 
18h 21m 02.38s +72° 43' 58.2" P.A. 357.00 sep 177.8 mag 3.57,12.10 Sp F7V dist. 8.06 pc (26.29 l.y.)
 
 
Coord 2000 18211+7244 Discov num BUP 182 Comp AB Coord arcsec 2000 18 21 02.38 +72 43 58.2
Date first 1879 Date last 2008 Obs 6
Pa first 27 Pa last 356.9 P.A. Now (θ) 356.9°
Sep first 144.6 Sep last 177.78 Sep. Now (ρ) 177.78"
Mag pri 3.57 Mag sec 12.10 delta mag (ΔM) 8.53 Spectral class F7V (yellow-white)
Pri motion ra +531 Sec motion ra -006
Pri motion dec -350 Sec motion dec +012
Notes N U (See Notes, Proper motion indicates non-physical)
rPM=1.018
This double is not physical.
 
 
18211+7244 SYSTEM COMPONENTS
 
 
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
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Chi Dra Var name NSV10749 Dra Constellation Draco SAO 9087
HIP 89937 Tycho2 4437-01491-1 HD 170153 HR 6927
GC 25122 GL Gl 713A BD BD+72 839 Bayer Chi Draconis
Bayer name Chi Dra Flamsteed 44 Draconis Flamsteed name 44 Dra FK5 695
Distance 8.06 Distance ly 26.29 Bayer greek χ Dra
 
 
WDS 18211+7244 BUP 182 AB (Chi Dra) : NOTES
 
 
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
 
 
REFERENCES
 
 
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
 
 
DISCOVERER
 
 
idgroup discov author
1 BUP Burnham proper motion stars (see Burnham, Carnegie Inst. Wash. #168, 1913)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18211+7244 BUP 182 AB 1914 3 17 150.7 3.57 11.80 F7V 182102.34+724401.3
18211+7244 BUP 182 AB 2008 6 357 177.8 3.57 11.80 F7V D 182102.34+724401.3

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

 
 
WDS 18211+7244 BUP 182 AB (Chi Dra) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18211+7244 BUP 182 AB (Chi Dra) : MEASURES
 
 
No records found.

 
 
WDS 18211+7244 (Chi Dra) : VIRTUAL EYEPIECE
 
 

18211+7244 BUP 182A mag 3.57 Sp F7V 18211+7244 LAB 5Ab sep 0.1 P.A. 193.80 mag 5.7 18211+7244 BUP 182B sep 176.0 P.A. 359.90 mag 12.1 18211+7244 BUP 182C sep 181.0 P.A. 359.20 mag 14.5 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18211+7244 (Chi Dra) : ALADIN DSS IMAGE @ 18h 21m 02.38s +72° 43' 58.2"
 
 
 
 
WDS 18211+7244 BUP 182 AB (Chi Dra) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18211+7244 LAB 5Aa,Ab distance=1' 18211+7244 BUP 182AB distance=1' 18211+7244 BUP 182BC distance=3' 18241+7220 BVD 127 distance=28' 18118+7248 UC 3528 distance=42' 18275+7316 TOI2253 distance=43' 18324+7245 CRB 205 distance=51' 18273+7344 KPP1362 distance=66' 18211+7137 GIC9022 distance=68' 18053+7217 TDT 668 distance=76' 18045+7316 HDS2544 distance=80' 18208+7120 STT 353AB distance=84' 18208+7120 STT 353AB,C distance=84' 18400+7241 CFN 15 distance=85' 18312+7131 WIS 328 distance=87' 18263+7119 TDT 867 distance=89' 18072+7131 A 1168 distance=97' 18317+7120 A 1170 distance=98' 18227+7421 TDT 824 distance=98' 18022+7151 UC 235 distance=102' 18371+7409 TDT 960 distance=110' 18186+7042 SKF2737 distance=123' 18187+7447 KPP 695 distance=124' 18058+7101 TDS 904 distance=126' 18164+7023 KPP4097 distance=143' 18397+7455 LDS1889 distance=151' 18168+7011 TDT 771AB distance=154' 18339+7016 MLR 97 distance=160' 18276+7000 LDS1886 distance=167' 18338+7003 STF2370 distance=173' 18343+7003 KPP 764 distance=174' 18325+6957 STF2366AB distance=176' 18325+6957 FOX9012AC distance=176' 18393+6955 WFC 211 distance=191' 18099+6941 ARR 1 distance=191' 18055+6945 TDT 673 distance=194' 18028+7547 STF2302AB distance=198' 18028+7547 STF2302AC distance=198' 18028+7547 STF2302BC distance=198' 18225+6924 UC 239 distance=201' 18332+6929 SKF2738 distance=204' 18335+6929 MLR 95 distance=204' 18383+6937 CTI 848 distance=205' 18319+7605 LOC 367 distance=206' 18393+6931 TOI1859 distance=212' 18113+6915 STF2307 distance=215' 18216+6855 A 1169 distance=230' 18196+7636 HU 929 distance=233' 18408+7624 MLR 214 distance=234' 18145+6851 LDS1463 distance=236' 18029+7628 LOC 360AB distance=236' grafico limitrofi
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 LAB 5 Aa,Ab 220 0.1 1
Show 18211+7244 BUP 182 AB 357 177.8 1
Show 18211+7244 BUP 182 BC 303 9.1 3
Show 18241+7220 BVD 127 327 19.8 28
Show 18118+7248 UC 3528 177 37.8 42
Show 18275+7316 TOI2253 291 26.3 43
Show 18324+7245 CRB 205 208 12.5 51
Show 18273+7344 KPP1362 123 10.3 66
Show 18211+7137 GIC9022 318 2.0 68
Show 18053+7217 TDT 668 43 2.0 76
Show 18045+7316 HDS2544 29 6.9 80
Show 18208+7120 STT 353 AB 262 0.5 84
Show 18208+7120 STT 353 AB,C 117 72.5 84
Show 18400+7241 CFN 15 110 0.8 85
Show 18312+7131 WIS 328 182 940.0 87
Show 18263+7119 TDT 867 303 1.8 89
Show 18072+7131 A 1168 327 0.7 97
Show 18317+7120 A 1170 188 0.9 98
Show 18227+7421 TDT 824 275 1.2 98
Show 18022+7151 UC 235 353 32.8 102
Show 18371+7409 TDT 960 220 2.0 110
Show 18186+7042 SKF2737 265 29.7 123
Show 18187+7447 KPP 695 11 6.2 124
Show 18058+7101 TDS 904 108 0.9 126
Show 18164+7023 KPP4097 323 5.5 143
Show 18397+7455 LDS1889 340 3.9 151
Show 18168+7011 TDT 771 AB 55 0.6 154
Show 18339+7016 MLR 97 111 0.2 160
Show 18276+7000 LDS1886 44 96.0 167
Show 18338+7003 STF2370 135 10.5 173
Show 18343+7003 KPP 764 231 6.6 174
Show 18325+6957 STF2366 AB 333 29.8 176
Show 18325+6957 FOX9012 AC 249 10.3 176
Show 18393+6955 WFC 211 68 9.5 191
Show 18099+6941 ARR 1 53 1.2 191
Show 18055+6945 TDT 673 241 2.0 194
Show 18028+7547 STF2302 AB 248 5.7 198
Show 18028+7547 STF2302 AC 278 22.9 198
Show 18028+7547 STF2302 BC 287 18.3 198
Show 18225+6924 UC 239 264 23.8 201
Show 18332+6929 SKF2738 333 15.2 204
Show 18335+6929 MLR 95 44 0.2 204
Show 18383+6937 CTI 848 280 1.0 205
Show 18319+7605 LOC 367 137 1.1 206
Show 18393+6931 TOI1859 184 10.6 212
Show 18113+6915 STF2307 205 4.4 215
Show 18216+6855 A 1169 304 1.0 230
Show 18196+7636 HU 929 111 1.8 233
Show 18408+7624 MLR 214 30 0.4 234
Show 18145+6851 LDS1463 346 15.0 236
Show 18029+7628 LOC 360 AB 243 1.3 236

 
 
WDS 18211+7244 : COMPONENTS
 
 
  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"
 
 
18211+7244 A
 
 
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
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
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
Hipparcos
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
Hipparcos 2
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
 
 
18211+7244 Ab
 
 
Coord arcsec 2000 182102.37+724358.1 Mag 5.7 Calc delta mag 2.13 Calc coord yes
 
 
18211+7244 B
 
 
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
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
 
 
18211+7244 C
 
 
Coord arcsec 2000 182101.80+724659.1 Mag 14.5 PmRA 6.00 PmDE 14.0
Calc delta mag 10.93 Calc coord yes