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Current system
18373+0732
STF 2346
HD 171951


Nearby doubles
31' : 18380+0800
A 356

31' : 18355+0748
SLE 359

33' : 18352+0745
J 97

36' : 18361+0701
LDS5238

37' : 18396+0736
J 2141

37' : 18349+0742
SLE 357AB

38' : 18352+0753
SLE 358

41' : 18399+0722
STF2355AB

42' : 18391+0803
TDT 973

43' : 18395+0703
J 1271

44' : 18395+0704
J 1272

44' : 18393+0700
J 101

45' : 18398+0709
SLE1031AB

45' : 18397+0704
J 102AB

47' : 18368+0818
SLE 360

48' : 18349+0804
SLE 356AB

51' : 18354+0649
J 100

53' : 18367+0640
J 99AB

55' : 18387+0821
J 1212

57' : 18335+0726
SCJ 18AB

59' : 18345+0813
GRV 233

59' : 18374+0830
TDT 962

61' : 18376+0833
J 2916AB

66' : 18397+0827
J 1213

67' : 18417+0740
GII 62

71' : 18412+0811
TDT 995



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.

18373+0732 STF 2346 (HD 171951)

 
 
18h 37m 15.29s +07° 31' 42.8" P.A. 298.00 sep 30.3 mag 7.93,10.00 Sp G0 dist. 377.36 pc (1230.95 l.y.)
 
 
Coord 2000 18373+0732 Discov num STF2346 Comp Coord arcsec 2000 18 37 15.29 +07 31 42.8
Date first 1829 Date last 2015 Obs 78
Pa first 283 Pa last 298.4 P.A. Now (θ) 298.4°
Sep first 15.4 Sep last 30.253 Sep. Now (ρ) 30.253"
Mag pri 7.93 Mag sec 10.00 delta mag (ΔM) 2.07 Spectral class G0 (yellow)
Pri motion ra +056 Sec motion ra -005
Pri motion dec -063 Sec motion dec -004
Notes L Y (Linear solution, Parallax indicates components are non-physical)
rPM=1.007
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 171951 Constellation Ophiuchus SAO 123709 HIP 91288
Tycho2 1024-01948-1 Gaia DR2 4286703783249339520 HD 171951 GC 25445
BD BD+07 3773 Distance 377.36 Distance ly 1230.95
 
 
WDS 18373+0732 STF 2346 (HD 171951) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
STFA (F. Struve DD - Appendix list #1) ...................
STFB (F. Struve DD - Appendix list #2) ...................
StF1833A Ma - Struve, F.G.W. 1833MmRAS...5...13H
StF1833A +Mc cited by Herschel (MemRAS 5, 13, 1833)
StF1833B Ma - Struve, F.G.W. 1833AN.....10..389B
StF1833B cited by Bessel (AN 10, 389, 1833)
StF1837 Ma - Struve, F.G.W. 1837AN.....14...249
StF1837 Stellarum duplicium et multiplicium mensurae micrometricae...
StF1837 (Dorpat, Academiae scientiarum caesareae petropolitaneifique), 1837
StF1844A Ma - Struve, F.G.W. 1844QB43.S66.......
StF1844A cited by Smyth (Cycle of Celestial Objects 2, 1844)
StF1852A Ma - Struve, F.G.W. .
StF1852A cited by Bishop (Bishop Obs. Astron. Observations 1852)
StF1865A Ma - Struve, F.G.W. 1865AN.....64...81E
StF1865A cited by Engelmann (AN 64, 81, #1518, 1865)
StF1875A Ma - Struve, F.G.W. 1875AN.....85..323D
StF1875A cited by Doberck, 1875 (see Dob1875b,f,g,h)
StF1878 Ma - Struve, F.G.W. .
StF1878 Pulkova Observations 9, 1878
StF1878B Ma - Struve, F.G.W. 1878Obs.....2..239G
StF1878B cited by Gledhill (Obs 2, 239, 1878)
StF1880A Ma - Struve, F.G.W. 1880Obs.....3..535G
StF1880A cited by Gledhill (Obs 3, 535, 1880)
StF1906A Ma - Struve, F.G.W. 1906QB821.B972.....
StF1906A cited in BDS (Burnham Double Star Cat.), 1906
StF1906B Ma - Struve, F.G.W. 1906MmRAS..56....1L
StF1906B cited by Lewis (MemRAS 56, 1, 1906)
StF1922A Ma - Struve, F.G.W. 1922AN....216...49R
StF1922A cited by Rabe (AN 216, 49, 1922)
StF1932A Ma - Struve, F.G.W. 1932QB821.A43......
StF1932A cited in ADS (Aitken Double Star Cat.), 1932
StF2002 - - Weis, J.
StF2002 F. G. W. Struve's double stars : the Dorpat catalogue; the Pulkovo catalogue
StF2002 USNO Library : QB 821 .S8 W49 2002
StF2022 - - email note from Jan Weis: 6 July 2022
StF9999 Ma - Struve, F.G.W. ...................
StF9999 Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18373+0732 STF2346 2007 61 298 29.4 7.93 10.00 G0 NLD 183715.29+073142.8
18373+0732 STF2346 2010 65 298 29.8 7.93 10.00 G0 NLD 183715.29+073142.8
18373+0732 STF2346 2012 67 299 30.2 7.93 10.00 G0 NLD 183715.29+073142.8
18373+0732 STF2346 2015 69 298 30.2 7.93 10.00 G0 L Y 183715.29+073142.8

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

 
 
WDS 18373+0732 STF 2346 (HD 171951) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18373+0732 STF 2346 (HD 171951) : MEASURES
 
 
No records found.

 
 
WDS 18373+0732 (HD 171951) : VIRTUAL EYEPIECE
 
 

18373+0732 STF2346A mag 7.93 Sp G0 18373+0732 STF2346B sep 30.1 P.A. 298.60 mag 10 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 18373+0732 (HD 171951) : ALADIN DSS IMAGE @ 18h 37m 15.29s +07° 31' 42.8"
 
 
 
 
WDS 18373+0732 STF 2346 (HD 171951) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18373+0732 STF2346 distance=0' 18380+0800 A 356 distance=31' 18355+0748 SLE 359 distance=31' 18352+0745 J 97 distance=33' 18361+0701 LDS5238 distance=36' 18396+0736 J 2141 distance=37' 18349+0742 SLE 357AB distance=37' 18349+0742 SLE 357AC distance=37' 18349+0742 SLE 357BC distance=37' 18352+0753 SLE 358 distance=38' 18399+0722 STF2355AB distance=41' 18399+0722 STF2355AC distance=41' 18399+0722 FOX 233AD distance=41' 18398+0709 BRT2178CD distance=41' 18391+0803 TDT 973 distance=42' 18395+0703 J 1271 distance=43' 18395+0704 J 1272 distance=44' 18393+0700 J 101 distance=44' 18398+0709 SLE1031AB distance=45' 18397+0704 J 102AB distance=45' 18397+0704 J 102AC distance=45' 18368+0818 SLE 360 distance=47' 18349+0804 SLE 356AB distance=48' 18349+0804 SLE 356AC distance=48' 18349+0804 SLE 356AD distance=48' 18354+0649 J 100 distance=51' 18367+0640 CHR 76Aa,Ab distance=53' 18367+0640 J 99AB distance=53' 18367+0640 J 99AC distance=53' 18367+0640 SLE 497AD distance=53' 18367+0640 SLE 497AE distance=53' 18387+0821 J 1212 distance=55' 18335+0726 SCJ 18AB distance=57' 18335+0726 SLE 690AC distance=57' 18335+0726 SCJ 18AD distance=57' 18345+0813 GRV 233 distance=59' 18374+0830 TDT 962 distance=59' 18376+0833 J 2916AB distance=61' 18376+0833 DAM 112AC distance=61' 18397+0827 J 1213 distance=66' 18417+0740 GII 62 distance=67' 18412+0811 TDT 995 distance=71' 18334+0816 STT 355 distance=73' 18390+0624 SLE 498 distance=73' 18412+0645 J 1273 distance=75' 18422+0739 HEI 869 distance=75' 18331+0649 SLE 354 distance=75' 18327+0656 SLE 352 distance=77' 18384+0850 HU 198 distance=81' 18427+0742 HEI 870AB distance=82' 18427+0742 HEI 870Aa,Ab distance=82' 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 18373+0732 STF2346 298 30.3
Show 18380+0800 A 356 224 1.0 31
Show 18355+0748 SLE 359 5 17.2 31
Show 18352+0745 J 97 112 3.5 33
Show 18361+0701 LDS5238 342 6.0 36
Show 18396+0736 J 2141 201 5.9 37
Show 18349+0742 SLE 357 AB 327 8.1 37
Show 18349+0742 SLE 357 AC 308 14.6 37
Show 18349+0742 SLE 357 BC 287 7.4 37
Show 18352+0753 SLE 358 166 15.6 38
Show 18399+0722 STF2355 AB 127 21.7 41
Show 18399+0722 STF2355 AC 38 109.6 41
Show 18399+0722 FOX 233 AD 225 46.6 41
Show 18398+0709 BRT2178 CD 169 5.2 41
Show 18391+0803 TDT 973 299 0.7 42
Show 18395+0703 J 1271 97 5.9 43
Show 18395+0704 J 1272 138 4.3 44
Show 18393+0700 J 101 243 5.2 44
Show 18398+0709 SLE1031 AB 299 12.2 45
Show 18397+0704 J 102 AB 50 4.2 45
Show 18397+0704 J 102 AC 294 30.8 45
Show 18368+0818 SLE 360 321 8.4 47
Show 18349+0804 SLE 356 AB 39 17.9 48
Show 18349+0804 SLE 356 AC 178 51.5 48
Show 18349+0804 SLE 356 AD 159 45.6 48
Show 18354+0649 J 100 102 4.1 51
Show 18367+0640 CHR 76 Aa,Ab 91 0.2 53
Show 18367+0640 J 99 AB 337 35.9 53
Show 18367+0640 J 99 AC 78 77.6 53
Show 18367+0640 SLE 497 AD 243 117.3 53
Show 18367+0640 SLE 497 AE 209 263.3 53
Show 18387+0821 J 1212 204 2.1 55
Show 18335+0726 SCJ 18 AB 196 46.0 57
Show 18335+0726 SLE 690 AC 304 87.5 57
Show 18335+0726 SCJ 18 AD 119 16.9 57
Show 18345+0813 GRV 233 217 14.9 59
Show 18374+0830 TDT 962 58 0.5 59
Show 18376+0833 J 2916 AB 41 6.3 61
Show 18376+0833 DAM 112 AC 291 6.9 61
Show 18397+0827 J 1213 128 2.2 66
Show 18417+0740 GII 62 246 0.9 67
Show 18412+0811 TDT 995 54 0.4 71
Show 18334+0816 STT 355 249 37.8 73
Show 18390+0624 SLE 498 184 21.5 73
Show 18412+0645 J 1273 353 1.8 75
Show 18422+0739 HEI 869 225 2.0 75
Show 18331+0649 SLE 354 343 7.8 75
Show 18327+0656 SLE 352 274 9.5 77
Show 18384+0850 HU 198 126 0.5 81
Show 18427+0742 HEI 870 AB 347 1.7 82
Show 18427+0742 HEI 870 Aa,Ab 246 0.9 82

 
 
WDS 18373+0732 : COMPONENTS
 
 
  A
B pa=298.6°
sep=30.05"
 
 
18373+0732 A
 
 
Componente originario normalizzato AB Name HD 171951 Coord arcsec 2000 183715.29+073142.8 Mag 7.93
Spectral class G0 (yellow) PmRA 56.00 PmDE -63.0 SAO 123709
HIP 91291 Tycho2 1024-01948-1 HD 171951 GC 25445
BD BD+07 3774
Tycho2
Tycho2 1024-01948-1 Pflag RAmdeg 279.31369255 DEmdeg 7.52855064
PmRA 58.0 PmDE -63.1 E RAmdeg 6 E DEmdeg 6
E pmRA 1.4 E pmDE 1.6 EpRAm 1991.20 EpDEm 1991.34
Num 11 Q RAmdeg 0.7 Q DEmdeg 1.3 Q pmRA 0.6
Q pmDE 1.3 BTmag 8.490 E BTmag 0.016 VTmag 7.931
E VTmag 0.012 Prox 283 TYC T HIP 91291
CCDM A RAdeg 279.31355861 DEdeg 7.52869639 EpRA 1990 1.76
EpDE 1990 1.69 E RAdeg 5.9 E DEdeg 6.4 Posflg
Corr -0.3
SAO
SAO 123709 DelFlag RA1950 PmRA1950 0.0042
DE1950 PmDE1950 -0.076 Vmag 7.7 SpType G0
Double code Source 70 CatNum 25445 DM BD+07 3774
DMcomp BDsup HD 171951 M HD 0
GC 25445 RA1950rad 4.86437914 DE1950rad 0.13064842 PmRA2000 0.0044
PmDE2000 -0.077
Hipparcos
Catalog H HIP 91291 Proxy RAhms 18 37 15.25
DEdms +07 31 43.3 Vmag 7.89 VarFlag R Vmag G
RAdeg 279.314 DEdeg 7.5287 AstroRef A Plx 13.6
CCDM 18372+0732 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source P Qual D M HIP
Theta Rho HD 171951 BD BD+07 3774
CD CP Dm number +07 3774 VIred 0.64
SpType G0 R SpType Coord arcsec 2000 183715.25+073143.3
Hipparcos 2
HIP 91291 Sn 95 So 3 Nc 1
RArad 4.8749411434 DErad 0.1314006818 Plx 13.32 PmRA 55.93
PmDE -61.76 E RArad 0.87 E DErad 0.54 E Plx 1.09
E pmRA 1.07 E pmDE 0.78 Hpmag 7.9971 E Hpmag 0.0064
SHp 0.013 VA 0 BV 0.566 E BV 0.015
VI 0.64
 
 
18373+0732 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 183713.52+073157.2 Mag 10 PmRA -5.00
PmDE -4.0 HIP 91288 BD BD+07 3773 Calc delta mag 2.07
Calc coord yes
Hipparcos
Catalog H HIP 91288 Proxy RAhms 18 37 13.56
DEdms +07 31 56.3 Vmag 9.74 VarFlag R Vmag H
RAdeg 279.307 DEdeg 7.5323 AstroRef B Plx 3.78
CCDM 18372+0732 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source I Qual D M HIP
Theta Rho HD BD BD+07 3773
CD CP Dm number +07 3773 VIred 1.71
SpType R SpType Coord arcsec 2000 183713.56+073156.3
Hipparcos 2
HIP 91288 Sn 95 So 3 Nc 1
RArad 4.8748181617 DErad 0.1314635264 Plx -2.65 PmRA 0.48
PmDE 2.58 E RArad 3.04 E DErad 2.08 E Plx 3.9
E pmRA 3.71 E pmDE 3.09 Hpmag 9.8399 E Hpmag 0.0249
SHp 0 VA 0 BV 1.73 E BV 0.04
VI 1.71