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Current system
18208+7120
STT 353 AB,C


Nearby doubles
17' : 18211+7137
GIC9022

27' : 18263+7119
TDT 867

40' : 18186+7042
SKF2737

51' : 18312+7131
WIS 328

53' : 18317+7120
A 1170

62' : 18164+7023
KPP4097

62' : 18241+7220
BVD 127

66' : 18072+7131
A 1168

72' : 18168+7011
TDT 771AB

76' : 18058+7101
TDS 904

84' : 18211+7244
BUP 182AB

88' : 18276+7000
LDS1886

92' : 18339+7016
MLR 97

93' : 18053+7217
TDT 668

94' : 18022+7151
UC 235

97' : 18118+7248
UC 3528

101' : 18324+7245
CRB 205

102' : 18338+7003
STF2370

102' : 18325+6957
STF2366AB

103' : 18343+7003
KPP 764

114' : 18099+6941
ARR 1

117' : 18225+6924
UC 239

120' : 18275+7316
TOI2253

121' : 18400+7241
CFN 15

122' : 18055+6945
TDT 673

126' : 18393+6955
WFC 211



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.

18208+7120 STT 353 AB,C

 
 
18h 20m 45.44s +71° 20' 15.8" P.A. 117.00 sep 72.5 mag 4.21,12.70 Sp B7V+B9V+ dist. 92.85 pc (302.88 l.y.)
 
 
Coord 2000 18208+7120 Discov num STT 353 Comp AB,C Coord arcsec 2000 18 20 45.44 +71 20 15.8
Date first 1912 Date last 2007 Obs 5
Pa first 115 Pa last 117 P.A. Now (θ) 117°
Sep first 70.8 Sep last 72.5 Sep. Now (ρ) 72.5"
Mag pri 4.21 Mag sec 12.70 delta mag (ΔM) 8.49 Spectral class B7V+B9V+ (blue-white/blue-white)
Pri motion ra -006 Sec motion ra -006
Pri motion dec +036 Sec motion dec -006
Notes N U (See Notes, Proper motion indicates non-physical)
rPM=1.151
This double is not physical.
 
 
18208+7120 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Phi Dra 9084 18 20 45 +71 20 16 STT 353 AB 2021 97 262 0.5 4.46 5.90 1.44 Y
Show 9084 18 20 45 +71 20 16 STT 353 AB,C 2007 5 117 72.5 4.21 12.70 8.49 <===
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Draco SAO 9084 HIP 89908 Tycho2 4437-01492-1
HD 170000 HR 6920 GC 25114 ADS 11311
BD BD+71 889 Bayer Phi Draconis Bayer name Phi Dra Distance 92.85
Distance ly 302.88 Bayer greek φ Dra
 
 
WDS 18208+7120 STT 353 AB,C : NOTES
 
 
discov_num notes refcode
STT 353 phi Dra = 43 Dra. A premature orbit has been computed. D__1883
Almost rectilinear relative motion, long period! Ole1975b
Period of A (SB1) is 127.99d. XXX2016
An Alpha CVn type variable.
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
Also an unresolved 128.165d spectroscopic binary. Mug2017b
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
D__1883 Ma - Dembowski, H. ...................
D__1883 Misure micrometriche di Stelle Doppie e multiple...
D__1883 (Rome, Coi tipi del Salviucci), vol. I, 1883
Mug2017b not - Bischoff, R., Mugrauer, M., Zehe, T., Wockel, D., Pannicke, A., Lux, O., 2017AN....338..671B
Mug2017b Wagner, D., Heyne, T., Adam, C. & Neuhauser, R.
Mug2017b AN 338, 671, 2017
Ole1975b orb - Olevic, D. 1975BOBeo.126...49O
Ole1975b Bull. Obs. Astron. Belgrade #126, 49, 1975
XXX2016 not - Liska, J. 2016MNRAS.461..939L
XXX2016 MNRAS 461, 939, 2016
 
 
DISCOVERER
 
 
discov author
BAZ Baize, P.
MUG Mugrauer, M., Neuhauser, R., Guenther, E., Hatzes, A.P., Huelamo, N.,
MUG Fernandez, M., Ammler, M., Retzlaff, J., et al.
MUG Bischoff, R., Mugrauer, M., Zehe, T., Wockel, D., Pannicke, A., Lux, O.,
MUG Wagner, D., Heyne, T., Adam, C. & Neuhauser, R.
XXX Ake, T.B., Fekel, F.C., Hall, D.S., Barksdale, W.S., Landis, H.J., Fried, R.E.,
XXX Louth, H. & Hopkins, J.L.
XXX Grundahl, F., Andersen, M.F., Christensen-Dalsgaard, J., Antoci, V., Kjeldsen, H.,
XXX Handberg, R., Houdek, G., Bedding, T.R., Palle, P.L., Jessen-Hansen, J., Aguirre,
XXX V.S., White, T.R., Frandsen, S., Albrecht, S., Andersen, M.I., Arentoft, T.,
XXX Brogaard, K., Chaplin, W.J., Harpsoe, K., Jorgensen, U.G., Karovicova, I., Karoff,
XXX C., Rasmussen, P.K., Lund, M.N., Lundkvist, M.S., Skottfelt, J., Sorensen, A.N.,
XXX Tronsgaard, R. & Weiss, E.
XXX White, T.R., Benomar, O., Silva Aguirre, V., Ball, W.H., Bedding, T.R., Chaplin,
XXX W.J., Christensen-Dalsgaard, J., Garcia, R.A., Gizon, L., Stello, D., Aigrain, S.,
XXX Anita, H.M., Appourchaux, T., Bazot, M., Campante, T.L., Creevey, O.L., Davies,
XXX G.R., Elsworth, Y.P., Gaulme, P., Handberg, R., Hekker, S., Houdek, G., Howe, R.,
XXX Huber, D., Karoff, C., Marques, J.P., Mathur, S., McQuillan, A., Metcalfe, T.S.,
XXX Mosser, B., Nielsen, M.B., Regulo, C., Salabert, D. & Stahn, T.
XXX Mahy, L., Gosset, E., Manfroid, J., Nitschelm, C., Herve, A., Semaan, T.,
XXX Marcadon, F., Appourchaux, T. & Marques, J.P.
XXX Koubsky, P., Harmanec, P., Broz, M., Kotkova, L., Yang, S., Bozic, H., Sudar, D.,
XXX Landstreet, J.D. & Bagnulo, S.
XXX Zhou, Y., Apai, D., Bedin, L.R., Lew, B.W.P., Schneider, G., Burgasser, A.J.,
XXX Suffak, M.W., Jones, C.E., Tycner, C., Henry, G.W., Carciofi, A.C., Mota, B.C. &
XXX Pope, B.J.S., Dedell, M., Callingham, J.R., Vedantham, H.K., Snellen, I.A.G.,
XXX Blunt, S., Wang, J.J., Angelo, I., Ngo, H., Cody, D., DeRosa, R.J., Graham, J.R.,
XXX Kain, I.J., Newton, E.R., Dittmann, J.A., Irwin, J.M., Mann, A.W., Thao, P.C.,
XXX Bazot, M.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
18208+7120 STT 353 AB,C 2007 4 117 72.5 4.40 12.70 A0pSi: N D 182045.44+712015.8

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

 
 
WDS 18208+7120 STT 353 AB,C : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18208+7120 STT 353 AB,C : MEASURES
 
 
No records found.

 
 
WDS 18208+7120 : VIRTUAL EYEPIECE
 
 

18208+7120 STT 353A mag 4.46 Sp B7V 18208+7120 STT 353B sep 0.5 P.A. 261.80 mag 5.9 Sp B9V 18208+7120 STT 353C sep 72.5 P.A. 117.00 mag 12.7 Sp B9V 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 18208+7120 : ALADIN DSS IMAGE @ 18h 20m 45.44s +71° 20' 15.8"
 
 
 
 
WDS 18208+7120 STT 353 AB,C : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18208+7120 STT 353AB,C distance=0' 18211+7137 GIC9022 distance=17' 18263+7119 TDT 867 distance=27' 18186+7042 SKF2737 distance=40' 18312+7131 WIS 328 distance=51' 18317+7120 A 1170 distance=53' 18164+7023 KPP4097 distance=62' 18241+7220 BVD 127 distance=62' 18072+7131 A 1168 distance=66' 18168+7011 TDT 771AB distance=72' 18058+7101 TDS 904 distance=76' 18211+7244 LAB 5Aa,Ab distance=84' 18211+7244 BUP 182AB distance=84' 18211+7244 BUP 182BC distance=87' 18276+7000 LDS1886 distance=88' 18339+7016 MLR 97 distance=92' 18053+7217 TDT 668 distance=93' 18022+7151 UC 235 distance=94' 18118+7248 UC 3528 distance=97' 18324+7245 CRB 205 distance=101' 18338+7003 STF2370 distance=102' 18325+6957 STF2366AB distance=102' 18325+6957 FOX9012AC distance=102' 18343+7003 KPP 764 distance=103' 18099+6941 ARR 1 distance=114' 18225+6924 UC 239 distance=117' 18275+7316 TOI2253 distance=120' 18400+7241 CFN 15 distance=121' 18055+6945 TDT 673 distance=122' 18393+6955 WFC 211 distance=126' 18332+6929 SKF2738 distance=128' 18335+6929 MLR 95 distance=129' 18113+6915 STF2307 distance=135' 18383+6937 CTI 848 distance=136' 18045+7316 HDS2544 distance=138' 18393+6931 TOI1859 distance=144' 18216+6855 A 1169 distance=146' 18273+7344 KPP1362 distance=147' 18145+6851 LDS1463 distance=153' 18161+6839 LDS1464 distance=164' 18227+7421 TDT 824 distance=182' 18371+7409 TDT 960 distance=184' 18054+6820 TDT 671 distance=198' 18187+7447 KPP 695 distance=208' 18402+6815 KPP 813 distance=211' 18196+6743 MLB 413 distance=219' 18128+6737 UC 237 distance=228' 18397+7455 LDS1889 distance=228' 18114+6721 LDS1462 distance=244' 18384+6708 STF2384AB distance=270' 18384+6708 STF2384AB,C distance=270' 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 18208+7120 STT 353 AB 262 0.5 0
Show 18208+7120 STT 353 AB,C 117 72.5 0
Show 18211+7137 GIC9022 318 2.0 17
Show 18263+7119 TDT 867 303 1.8 27
Show 18186+7042 SKF2737 265 29.7 40
Show 18312+7131 WIS 328 182 940.0 51
Show 18317+7120 A 1170 188 0.9 53
Show 18164+7023 KPP4097 323 5.5 62
Show 18241+7220 BVD 127 327 19.8 62
Show 18072+7131 A 1168 327 0.7 66
Show 18168+7011 TDT 771 AB 55 0.6 72
Show 18058+7101 TDS 904 108 0.9 76
Show 18211+7244 LAB 5 Aa,Ab 40 0.1 84
Show 18211+7244 BUP 182 AB 357 177.8 84
Show 18211+7244 BUP 182 BC 303 9.1 87
Show 18276+7000 LDS1886 44 96.0 88
Show 18339+7016 MLR 97 111 0.2 92
Show 18053+7217 TDT 668 41 1.9 93
Show 18022+7151 UC 235 353 32.8 94
Show 18118+7248 UC 3528 177 37.8 97
Show 18324+7245 CRB 205 208 12.5 101
Show 18338+7003 STF2370 135 10.6 102
Show 18325+6957 STF2366 AB 333 29.8 102
Show 18325+6957 FOX9012 AC 249 10.3 102
Show 18343+7003 KPP 764 231 6.6 103
Show 18099+6941 ARR 1 53 1.2 114
Show 18225+6924 UC 239 264 23.8 117
Show 18275+7316 TOI2253 291 26.3 120
Show 18400+7241 CFN 15 318 0.9 121
Show 18055+6945 TDT 673 241 2.0 122
Show 18393+6955 WFC 211 68 9.5 126
Show 18332+6929 SKF2738 333 15.2 128
Show 18335+6929 MLR 95 44 0.2 129
Show 18113+6915 STF2307 205 4.4 135
Show 18383+6937 CTI 848 280 1.0 136
Show 18045+7316 HDS2544 29 6.9 138
Show 18393+6931 TOI1859 184 10.6 144
Show 18216+6855 A 1169 303 1.0 146
Show 18273+7344 KPP1362 123 10.3 147
Show 18145+6851 LDS1463 346 15.0 153
Show 18161+6839 LDS1464 32 110.2 164
Show 18227+7421 TDT 824 275 1.2 182
Show 18371+7409 TDT 960 220 2.0 184
Show 18054+6820 TDT 671 90 0.6 198
Show 18187+7447 KPP 695 11 6.2 208
Show 18402+6815 KPP 813 166 7.0 211
Show 18196+6743 MLB 413 147 2.6 219
Show 18128+6737 UC 237 172 57.0 228
Show 18397+7455 LDS1889 340 3.9 228
Show 18114+6721 LDS1462 237 119.1 244
Show 18384+6708 STF2384 AB 303 0.4 270

 
 
WDS 18208+7120 : COMPONENTS
 
 
  A B
B pa=261.8°
sep=0.46"
 
C pa=117.0°
sep=72.51"
pa=116.8°
sep=72.89"
 
 
18208+7120 A
 
 
Name Phi Dra Coord arcsec 2000 182045.44+712015.8 Mag 4.46 Spectral class B7V (blue-white)
PmRA -5.00 PmDE 36.0 SAO 9084 HIP 89908
Tycho2 4437-01492-1 HD 170000 HR 6920 GC 25114
BD BD+71 889 Bayer Phi Draconis Bayer name Phi Dra Flamsteed 43 Draconis
Flamsteed name 43 Dra
Tycho2
Tycho2 4437-01492-1 Pflag RAmdeg 275.18923586 DEmdeg 71.33780684
PmRA -5.5 PmDE 32.7 E RAmdeg 3 E DEmdeg 3
E pmRA 0.7 E pmDE 0.7 EpRAm 1991.41 EpDEm 1991.40
Num 15 Q RAmdeg 2.0 Q DEmdeg 1.7 Q pmRA 2.0
Q pmDE 1.6 BTmag 4.130 E BTmag 0.014 VTmag 4.210
E VTmag 0.009 Prox 999 TYC T HIP 89908
CCDM AB RAdeg 275.18927500 DEdeg 71.33773139 EpRA 1990 1.76
EpDE 1990 1.70 E RAdeg 3.3 E DEdeg 3.3 Posflg P
Corr 0.0
SAO
SAO 9084 DelFlag RA1950 PmRA1950 -0.002
DE1950 PmDE1950 0.041 Vmag 4.2 SpType A0p
Double code Source 71 CatNum 693 DM BD+71 889
DMcomp BDsup HD 170000 M HD 0
GC 25114 RA1950rad 4.80609172 DE1950rad 1.2446245 PmRA2000 -0.0009
PmDE2000 0.04
Hipparcos
Catalog H HIP 89908 Proxy H RAhms 18 20 45.44
DEdms +71 20 15.8 Vmag 4.22 VarFlag 1 R Vmag G
RAdeg 275.189 DEdeg 71.3377 AstroRef A Plx 11.28
CCDM -5.91 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 274 Rho 0.382 HD BD BD+71 889
CD CP Dm number +71 889 VIred -0.11
SpType A0p (Si) R SpType Coord arcsec 2000 182045.44+712015.8
Hipparcos 2
HIP 89908 Sn 15 So 3 Nc 2
RArad 4.8029600357 DErad 1.2450782239 Plx 10.77 PmRA -5.03
PmDE 37.86 E RArad 0.39 E DErad 0.34 E Plx 0.38
E pmRA 0.43 E pmDE 0.39 Hpmag E Hpmag 0.0017
SHp 0.012 VA 1 BV -0.093 E BV 0.007
VI -0.11
CCDM
Ccdm 18208+7120 RComp Comp A Note1
Note2 Discov num DRAs -2.60 DDEs 16.3
R dRAs 10 Year Theta Rho
Obs 3 Vmag 4.4 Sp A0 PmNote *
PmRA -10 PmDE 40 Dm number +71 889 Cat1 BD
Name2 +71 535 Cat2 AGK2/3 HD 170000 M HD
ADS BDS A11311 M ADS BDS N IDS IDS 18222N7117A
HIC 89908
 
 
18208+7120 B
 
 
Coord arcsec 2000 182045.35+712015.7 Mag 5.9 Spectral class B9V (blue-white) Delta magnitude 1.44
Coordinate calculated yes
CCDM
Ccdm 18208+7120 RComp Comp B Note1 *
Note2 Discov num STT 353 DRAs DDEs
R dRAs Year 1984 Theta 252 Rho 0.5
Obs 28 Vmag 6.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11311 M ADS BDS N IDS IDS 18222N7117B
HIC 89908
 
 
18208+7120 C
 
 
Coord arcsec 2000 182058.90+711942.9 Mag 12.7 Spectral class B9V (blue-white) PmRA -6.00
PmDE -6.0 Delta magnitude 8.24 Coordinate calculated yes
CCDM
Ccdm 18208+7120 RComp Comp C Note1
Note2 Discov num STT 353 DRAs DDEs
R dRAs Year 1912 Theta 115 Rho 70.8
Obs Vmag 12.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11311 M ADS BDS N IDS IDS 18222N7117C
HIC