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Doubles in session


Current system
18389+5221
STF 2368 AC


Nearby doubles
23' : 18387+5243
A 1379

39' : 18414+5150
SLE 239

40' : 18387+5300
SLE 232

45' : 18344+5240
BEM 34

45' : 18339+5221
A 1377AB

53' : 18345+5147
HDS2634

58' : 18448+5201
HU 755

59' : 18339+5144
ZUC 16

61' : 18372+5122
SLE 227

65' : 18459+5228
RAO 398

67' : 18461+5212
MLR 637

68' : 18323+5149
SLE 205

76' : 18399+5106
ES 787

78' : 18417+5108
HU 754

78' : 18314+5144
SLE 194AB

82' : 18466+5142
HU 756

88' : 18456+5119
KPP4119AB

93' : 18383+5353
A 1378AB

94' : 18402+5048
COU2515

94' : 18340+5058
ES 785AB

96' : 18319+5110
ES 784

98' : 18298+5314
TDT 911

102' : 18495+5157
UC 3685

107' : 18340+5045
ES 786

114' : 18512+5210
BEM 35

121' : 18471+5356
A 1382



Selections
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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.

18389+5221 STF 2368 AC

 
 
18h 38m 51.27s +52° 20' 38.2" P.A. 125.00 sep 36.6 mag 7.63,12.33 Sp A3 dist. 263.16 pc (858.43 l.y.)
 
 
Coord 2000 18389+5221 Discov num STF2368 Comp AC Coord arcsec 2000 18 38 51.27 +52 20 38.2
Date first 1887 Date last 2015 Obs 11
Pa first 131 Pa last 124.8 P.A. Now (θ) 124.8°
Sep first 44.3 Sep last 36.572 Sep. Now (ρ) 36.572"
Mag pri 7.63 Mag sec 12.33 delta mag (ΔM) 4.7 Spectral class A3 (white)
Pri motion ra +007 Sec motion ra +000
Pri motion dec -005 Sec motion dec -012
Notes N (See Notes)
rPM=0.825
This double is not physical.
 
 
18389+5221 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 172712 31086 18 38 51 +52 20 38 STF 2368 AB 2017 94 321 1.9 7.63 7.77 0.14
Show 31086 18 38 51 +52 20 38 STF 2368 AC 2015 11 125 36.6 7.63 12.33 4.70 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Draco SAO 31086 HIP 91436 Tycho2 3539-00897-1
Gaia DR2 2145517622427994624 HD 172712 BD BD+52 2258 Distance 263.16
Distance ly 858.43
 
 
WDS 18389+5221 STF 2368 AC : NOTES
 
 
discov_num notes refcode
STF2368 Mt. Wilson spectral classes A1n and G0.
AB: H 2 31. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18389+5221 STF2368 AC 1998 9 125 38.0 7.63 11.40 A3 N D 183851.27+522038.2
18389+5221 STF2368 AC 2003 10 125 37.3 7.63 11.40 A3 N D 183851.27+522038.2
18389+5221 STF2368 AC 2015 11 125 36.6 7.63 12.33 A3 N 183851.27+522038.2

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

 
 
WDS 18389+5221 STF 2368 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18389+5221 STF 2368 AC : MEASURES
 
 
No records found.

 
 
WDS 18389+5221 : VIRTUAL EYEPIECE
 
 

18389+5221 STF2368A mag 7.63 Sp A3 18389+5221 STF2368B sep 1.7 P.A. 333.60 mag 7.77 18389+5221 STF2368C sep 27.8 P.A. 138.70 mag 12.33 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 18389+5221 : ALADIN DSS IMAGE @ 18h 38m 51.27s +52° 20' 38.2"
 
 
 
 
WDS 18389+5221 STF 2368 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18389+5221 STF2368AC distance=0' 18387+5243 A 1379 distance=23' 18414+5150 SLE 239 distance=39' 18387+5300 SLE 232 distance=40' 18344+5240 BEM 34 distance=45' 18339+5221 A 1377AB distance=45' 18339+5221 STF2348AB,C distance=45' 18339+5221 SLE 216AB,D distance=45' 18339+5221 SLE 216AB,E distance=45' 18345+5147 HDS2634 distance=53' 18448+5201 HU 755 distance=58' 18339+5144 ZUC 16 distance=59' 18372+5122 SLE 227 distance=61' 18459+5228 RAO 398 distance=65' 18461+5212 MLR 637 distance=67' 18323+5149 SLE 205 distance=68' 18399+5106 ES 787 distance=76' 18417+5108 HU 754 distance=78' 18314+5144 SLE 194AB distance=78' 18314+5144 SLE 194AC distance=78' 18466+5142 HU 756 distance=82' 18456+5119 KPP4119AB distance=88' 18383+5353 A 1378AB distance=93' 18383+5353 A 1378AB,C distance=93' 18402+5048 COU2515 distance=94' 18340+5058 ES 785AB distance=94' 18340+5058 ES 785AC distance=94' 18340+5058 ABH 102AD distance=94' 18319+5110 ES 784 distance=96' 18298+5314 TDT 911 distance=98' 18495+5157 UC 3685 distance=102' 18340+5045 ES 786 distance=107' 18512+5210 BEM 35 distance=114' 18471+5356 A 1382 distance=121' 18516+5259 TRN 3AB distance=122' 18516+5259 LEP 90AC distance=122' 18515+5124 SMR 76 distance=131' 18526+5140 TDT1102 distance=134' 18517+5116 ES 788 distance=136' 18527+5135 COU2517 distance=136' 18496+5048 UC 3686 distance=137' 18525+5319 KPP4125 distance=138' 18521+5120 STF2416AB distance=138' 18521+5120 STF2416AC distance=138' 18259+5338 FMR 140 distance=140' 18238+5139 ES 187AB distance=146' 18238+5139 ES 187AC distance=146' 18238+5318 YSC 66 distance=149' 18244+5331 BEM 33 distance=149' 18443+5443 UC 3659 distance=151' 18265+5404 UC 3583 distance=152' 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 18389+5221 STF2368 AB 321 1.9
Show 18389+5221 STF2368 AC 125 36.6
Show 18387+5243 A 1379 211 2.1 23
Show 18414+5150 SLE 239 98 13.2 39
Show 18387+5300 SLE 232 219 14.6 40
Show 18344+5240 BEM 34 26 10.5 45
Show 18339+5221 A 1377 AB 134 0.2 45
Show 18339+5221 STF2348 AB,C 271 25.7 45
Show 18339+5221 SLE 216 AB,D 338 93.7 45
Show 18339+5221 SLE 216 AB,E 232 109.1 45
Show 18345+5147 HDS2634 351 0.1 53
Show 18448+5201 HU 755 124 0.6 58
Show 18339+5144 ZUC 16 47 17.0 59
Show 18372+5122 SLE 227 228 5.7 61
Show 18459+5228 RAO 398 190 2.7 65
Show 18461+5212 MLR 637 102 0.8 67
Show 18323+5149 SLE 205 59 9.7 68
Show 18399+5106 ES 787 38 8.3 76
Show 18417+5108 HU 754 93 1.3 78
Show 18314+5144 SLE 194 AB 213 7.8 78
Show 18314+5144 SLE 194 AC 109 16.1 78
Show 18466+5142 HU 756 263 1.0 82
Show 18456+5119 KPP4119 AB 24 18.5 88
Show 18383+5353 A 1378 AB 119 0.4 93
Show 18383+5353 A 1378 AB,C 273 14.1 93
Show 18402+5048 COU2515 276 0.3 94
Show 18340+5058 ES 785 AB 98 9.4 94
Show 18340+5058 ES 785 AC 293 10.9 94
Show 18340+5058 ABH 102 AD 17 54.2 94
Show 18319+5110 ES 784 65 7.1 96
Show 18298+5314 TDT 911 196 0.7 98
Show 18495+5157 UC 3685 147 73.5 102
Show 18340+5045 ES 786 323 5.9 107
Show 18512+5210 BEM 35 156 17.2 114
Show 18471+5356 A 1382 226 4.6 121
Show 18516+5259 TRN 3 AB 101 1.1 122
Show 18516+5259 LEP 90 AC 327 206.5 122
Show 18515+5124 SMR 76 315 5.0 131
Show 18526+5140 TDT1102 95 2.0 134
Show 18517+5116 ES 788 317 3.3 136
Show 18527+5135 COU2517 109 0.9 136
Show 18496+5048 UC 3686 24 48.1 137
Show 18525+5319 KPP4125 267 1.7 138
Show 18521+5120 STF2416 AB 157 20.3 138
Show 18521+5120 STF2416 AC 39 122.5 138
Show 18259+5338 FMR 140 84 16.2 140
Show 18238+5139 ES 187 AB 206 2.5 146
Show 18238+5139 ES 187 AC 124 91.3 146
Show 18238+5318 YSC 66 43 0.9 149
Show 18244+5331 BEM 33 46 8.0 149
Show 18443+5443 UC 3659 178 8.1 151

 
 
WDS 18389+5221 : COMPONENTS
 
 
  A B
B pa=333.6°
sep=1.66"
 
C pa=138.7°
sep=27.79"
pa=139.5°
sep=29.40"
 
 
18389+5221 A
 
 
Name HD 172712 Coord arcsec 2000 183851.27+522038.2 Mag 7.63 Spectral class A3 (white)
PmRA 8.00 PmDE -3.0 SAO 31086 HIP 91436
Tycho2 3539-00897-1 HD 172712 GC 25534 BD BD+52 2258
Tycho2
Tycho2 3539-00897-1 Pflag P RAmdeg 279.71355286 DEmdeg 52.34402039
PmRA 8.1 PmDE -2.5 E RAmdeg 5 E DEmdeg 5
E pmRA 2.0 E pmDE 1.8 EpRAm 1991.49 EpDEm 1991.46
Num 6 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.8
Q pmDE 1.0 BTmag 7.745 E BTmag 0.016 VTmag 7.627
E VTmag 0.012 Prox 19 TYC T HIP 91436
CCDM A RAdeg 279.71362556 DEdeg 52.34394472 EpRA 1990 1.59
EpDE 1990 1.57 E RAdeg 5.1 E DEdeg 5.1 Posflg D
Corr -0.1
SAO
SAO 31086 DelFlag RA1950 PmRA1950 0.0007
DE1950 PmDE1950 0.002 Vmag 6.9 SpType +++
Double code Source 70 CatNum 25534 DM BD+52 2258
DMcomp BDsup HD 172712 M HD 9
GC 25534 RA1950rad 4.876938 DE1950rad 0.9127726 PmRA2000 0.0013
PmDE2000 0.002
Hipparcos
Catalog H HIP 91436 Proxy H RAhms 18 38 51.27
DEdms +52 20 38.2 Vmag 6.92 VarFlag R Vmag G
RAdeg 279.714 DEdeg 52.3439 AstroRef A Plx 2.68
CCDM 18389+5221 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 322 Rho 1.909 HD 172712 BD BD+52 2258
CD CP Dm number +52 2258 VIred 0.5
SpType F2 R SpType Coord arcsec 2000 183851.27+522038.2
Hipparcos 2
HIP 91436 Sn 15 So 3 Nc 2
RArad 4.8819236927 DErad 0.9135742232 Plx 3.8 PmRA 6.14
PmDE -7.4 E RArad 0.45 E DErad 0.71 E Plx 0.57
E pmRA 0.51 E pmDE 0.77 Hpmag 7.0105 E Hpmag 0.0013
SHp 0.008 VA 0 BV 0.432 E BV 0.015
VI 0.5
CCDM
Ccdm 18389+5221 RComp Comp A Note1
Note2 Discov num DRAs -2.77 DDEs -21.5
R dRAs 10 Year Theta Rho
Obs 3 Vmag 7.6 Sp A3 PmNote *
PmRA 1 PmDE -7 Dm number +52 2258 Cat1 BD
Name2 +52 1213 Cat2 AGK2/3 HD 172712 M HD
ADS BDS A11558 M ADS BDS N IDS IDS 18366N5215A
HIC 91436
 
 
18389+5221 B
 
 
Coord arcsec 2000 183851.19+522039.7 Mag 7.77 PmRA 8.00 PmDE -3.0
Tycho2 3539-00897-2 HD 172713 Calc delta mag 0.14 Calc coord yes
Tycho2
Tycho2 3539-00897-2 Pflag P RAmdeg 279.71355286 DEmdeg 52.34402039
PmRA 8.1 PmDE -2.5 E RAmdeg 5 E DEmdeg 5
E pmRA 2.0 E pmDE 1.8 EpRAm 1991.49 EpDEm 1991.46
Num 6 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.8
Q pmDE 1.0 BTmag 8.782 E BTmag 0.019 VTmag 7.772
E VTmag 0.012 Prox 19 TYC T HIP 91436
CCDM B RAdeg 279.71309500 DEdeg 52.34436500 EpRA 1990 1.57
EpDE 1990 1.56 E RAdeg 6.7 E DEdeg 6.6 Posflg D
Corr -0.1
CCDM
Ccdm 18389+5221 RComp Comp B Note1
Note2 Discov num STF2368 DRAs DDEs
R dRAs Year 1951 Theta 323 Rho 1.9
Obs 99 Vmag 7.8 Sp F2 PmNote
PmRA 11 PmDE -1 Dm number Cat1
Name2 Cat2 HD 172713 M HD
ADS BDS A11558 M ADS BDS N N IDS IDS 18366N5215B
HIC 91436
 
 
18389+5221 C
 
 
Coord arcsec 2000 183853.27+522017.3 Mag 12.33 PmRA 0.00 PmDE -12.0
Calc delta mag 4.7 Calc coord yes
CCDM
Ccdm 18389+5221 RComp Comp C Note1
Note2 Discov num STF2368 DRAs DDEs
R dRAs Year 1901 Theta 125 Rho 36.6
Obs 4 Vmag 10.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11558 M ADS BDS N IDS IDS 18366N5215C
HIC