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Doubles in session


Current system
18517+1331
STF 2409 AB
HD 174791


Nearby doubles
11' : 18521+1322
TOB 296

13' : 18510+1339
BPM 868

19' : 18523+1314
TOB 297

20' : 18504+1336
BPM 861

24' : 18502+1339
BPM 857AB

27' : 18506+1351
J 108

28' : 18520+1358
CHR 80

28' : 18523+1357
BPM 874

29' : 18538+1334
J 1188

30' : 18522+1302
TDT1094

31' : 18528+1357
BPM 876

32' : 18526+1400
STF2412

34' : 18508+1301
BPM 865

36' : 18496+1313
SHY 309

37' : 18537+1353
BPM 880

37' : 18541+1319
J 1837

39' : 18522+1409
BPM 872

43' : 18491+1313
STF2399AB

43' : 18503+1408
HEI 398

45' : 18526+1414
BPMA 67

46' : 18542+1304
HDS2679

46' : 18494+1400
BPM 847

46' : 18531+1412
BPM 877

47' : 18529+1248
TDT1108

48' : 18486+1344
BPM 836

51' : 18511+1421
BPMA 64



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.

18517+1331 STF 2409 AB (HD 174791)

 
 
18h 51m 43.74s +13° 31' 06.9" P.A. 22.00 sep 0.9 mag 8.46,9.64 Sp G5 dist. 261.1 pc (851.71 l.y.)
 
 
Coord 2000 18517+1331 Discov num STF2409 Comp AB Coord arcsec 2000 18 51 43.74 +13 31 06.9
Date first 1829 Date last 2015 Obs 48
Pa first 33 Pa last 21.6 P.A. Now (θ) 21.6°
Sep first 1.0 Sep last 0.94 Sep. Now (ρ) 0.94"
Mag pri 8.46 Mag sec 9.64 delta mag (ΔM) 1.18 Spectral class G5 (yellow)
Pri motion ra +012 Sec motion ra +012
Pri motion dec +000 Sec motion dec +000
Notes
Nature of this double is uncertain.
 
 
18517+1331 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 174791 104190 18 51 44 +13 31 07 STF 2409 AB 2015 48 22 0.9 8.46 9.64 1.18 <===
Show 104190 18 51 44 +13 31 07 STF 2409 AC 2015 13 196 33.8 8.46 12.96 4.50
Show 104190 18 51 44 +13 31 07 WAL 96 AB,D 2014 5 291 72.7 8.15 13.10 4.95
Quadruple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 174791 Constellation Hercules SAO 104190 HIP 92565
Tycho2 1038-00509-1 Gaia DR2 4506988528369460992 HD 174791 GC 25877
ADS 11763 BD BD+13 3783 Distance 261.1 Distance ly 851.71
 
 
WDS 18517+1331 STF 2409 AB (HD 174791) : 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.
Wal1934 Ma j Wallenquist, A. 1934AnBos...6....3W
Wal1934 Ann. Bosscha Obs. Lembang 6, Pt.2, 1934
Wal1944a Zw - Wallenquist, A. 1954MeUpp...85.....
Wal1944a Medd. Uppsala Obs. #85, 1944
Wal1944a (Visual measures with wedge photometer attached to 14-inch refractor. No dates
Wal1944a given for measures; default date = decade of publication added.)
Wal1944b Zw - Wallenquist, A. 1954MeUpp...87.....
Wal1944b Medd. Uppsala Obs. #87, 1944
Wal1944b (Visual measures with wedge photometer attached to 14-inch refractor. No dates
Wal1944b given for measures; default date = decade of publication added.)
Wal1947 Zw - Wallenquist, A. 1947UppAn...2....2W
Wal1947 Ann. Uppsala Astron. Obs. 2, No.2, 1947
Wal1947 (A catalogue containing results of the two prior series, plus additional measures
Wal1947 with the 14-inch refractor and wedge photometer)
Wal1948 Zw - Wallenquist, A. 1948UppAn...2....3W
Wal1948 Ann. Uppsala Astron Obs. 2, #3, 1948
Wal1948 (Visual measures of southern double stars made with 17-inch refractor of La Plata
Wal1948 and wedge photometer. No dates listed; default date = decade of publication added)
Wal1950 Zd - Wallenquist, A. 1950MeUpp..103.....
Wal1950 Medd. Uppsala Obs. #103, 1950
Wal1954 Zw - Wallenquist, A. 1954UppAn...4Q....W
Wal1954 Ann. Uppsala Astron Obs. 4, #2, 1954
Wal1954 ("General Catalogue of Differences in Magnitude of Double Stars". Weighted mean
Wal1954 values from numerous sources)
Wal1958 Zw - Wallenquist, A. 1958MeUpp..118.....
Wal1958 Medd. Uppsala Obs. #118, 1958
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18517+1331 STF2409 AB 2005 45 21 1.0 8.46 9.64 G5 D 185143.74+133106.9
18517+1331 STF2409 AB 2008 46 18 1.0 8.46 9.64 G5 D 185143.74+133106.9
18517+1331 STF2409 AB 2011 47 20 1.0 8.46 9.64 G5 185143.74+133106.9
18517+1331 STF2409 AB 2015 47 22 0.9 8.46 9.64 G5 185143.74+133106.9

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

 
 
WDS 18517+1331 STF 2409 AB (HD 174791) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18517+1331 STF 2409 AB (HD 174791) : MEASURES
 
 
No records found.

 
 
WDS 18517+1331 (HD 174791) : VIRTUAL EYEPIECE
 
 

18517+1331 STF2409A mag 8.46 Sp G5 18517+1331 STF2409B sep 0.9 P.A. 21.10 mag 9.64 18517+1331 STF2409C sep 33.7 P.A. 195.80 mag 12.96 18517+1331 WAL 96D sep 71.0 P.A. 291.00 mag 13.1 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 18517+1331 (HD 174791) : ALADIN DSS IMAGE @ 18h 51m 43.74s +13° 31' 06.9"
 
 
 
 
WDS 18517+1331 STF 2409 AB (HD 174791) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18517+1331 STF2409AB distance=0' 18521+1322 TOB 296 distance=11' 18510+1339 BPM 868 distance=13' 18523+1314 TOB 297 distance=19' 18504+1336 BPM 861 distance=20' 18502+1339 BPM 857AB distance=24' 18502+1339 BPM 857BC distance=25' 18506+1351 J 108 distance=27' 18520+1358 CHR 80 distance=28' 18523+1357 BPM 874 distance=28' 18538+1334 J 1188 distance=29' 18522+1302 TDT1094 distance=30' 18528+1357 BPM 876 distance=31' 18526+1400 STF2412 distance=32' 18508+1301 BPM 865 distance=34' 18496+1313 SHY 309 distance=36' 18537+1353 BPM 880 distance=37' 18541+1319 J 1837 distance=37' 18522+1409 BPM 872 distance=39' 18491+1313 STF2399BC distance=43' 18491+1313 STF2399BD distance=43' 18491+1313 STF2399AB distance=43' 18491+1313 STF2399AC distance=43' 18503+1408 HEI 398 distance=43' 18526+1414 BPMA 67 distance=45' 18542+1304 HDS2679 distance=46' 18494+1400 BPM 847 distance=46' 18531+1412 BPM 877 distance=46' 18529+1248 TDT1108 distance=47' 18529+1248 GII 273Aa,Ab distance=47' 18486+1344 BPM 836 distance=48' 18511+1421 BPMA 64 distance=51' 18504+1241 J 469 distance=52' 18494+1252 BPM 848 distance=52' 18554+1331 BU 647AB distance=55' 18554+1331 BU 647AC distance=55' 18554+1331 FOX9032AD distance=55' 18500+1420 BPM 854 distance=56' 18548+1300 J 532 distance=56' 18493+1416 BPM 845 distance=57' 18553+1304 BPMA 69 distance=59' 18528+1234 AG 365 distance=60' 18507+1233 BPM 864 distance=60' 18497+1238 BPM 852 distance=61' 18523+1432 STF2411AB distance=62' 18523+1432 WAL 97AC distance=62' 18523+1432 WAL 97AD distance=62' 18479+1403 BPM 833 distance=64' 18503+1229 BPM 858 distance=66' 18501+1230 BPM 856 distance=66' 18503+1228 J 468AB distance=67' 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 18517+1331 STF2409 AB 22 0.9
Show 18517+1331 STF2409 AC 196 33.8
Show 18517+1331 WAL 96 AB,D 291 72.7
Show 18521+1322 TOB 296 109 20.8 11
Show 18510+1339 BPM 868 14 74.9 13
Show 18523+1314 TOB 297 86 16.8 19
Show 18504+1336 BPM 861 207 104.3 20
Show 18502+1339 BPM 857 AB 257 44.9 24
Show 18502+1339 BPM 857 BC 43 3.4 25
Show 18506+1351 J 108 77 2.0 27
Show 18520+1358 CHR 80 9 0.1 28
Show 18523+1357 BPM 874 154 110.6 28
Show 18538+1334 J 1188 196 2.0 29
Show 18522+1302 TDT1094 302 1.8 30
Show 18528+1357 BPM 876 272 62.9 31
Show 18526+1400 STF2412 56 1.4 32
Show 18508+1301 BPM 865 273 87.5 34
Show 18496+1313 SHY 309 161 999.9 36
Show 18537+1353 BPM 880 163 116.0 37
Show 18541+1319 J 1837 120 7.6 37
Show 18522+1409 BPM 872 132 116.0 39
Show 18491+1313 STF2399 BC 18 29.7 43
Show 18491+1313 STF2399 BD 69 42.4 43
Show 18491+1313 STF2399 AB 118 15.8 43
Show 18491+1313 STF2399 AC 48 31.2 43
Show 18503+1408 HEI 398 107 1.8 43
Show 18526+1414 BPMA 67 13 220.9 45
Show 18542+1304 HDS2679 317 0.5 46
Show 18494+1400 BPM 847 97 42.6 46
Show 18531+1412 BPM 877 210 85.7 46
Show 18529+1248 TDT1108 348 0.8 47
Show 18529+1248 GII 273 Aa,Ab 135 0.2 47
Show 18486+1344 BPM 836 173 36.6 48
Show 18511+1421 BPMA 64 274 231.1 51
Show 18504+1241 J 469 111 2.8 52
Show 18494+1252 BPM 848 350 112.4 52
Show 18554+1331 BU 647 AB 5 1.3 55
Show 18554+1331 BU 647 AC 218 18.5 55
Show 18554+1331 FOX9032 AD 86 37.5 55
Show 18500+1420 BPM 854 271 66.2 56
Show 18548+1300 J 532 4 4.4 56
Show 18493+1416 BPM 845 100 106.7 57
Show 18553+1304 BPMA 69 26 136.8 59
Show 18528+1234 AG 365 186 18.8 60
Show 18507+1233 BPM 864 115 54.7 60
Show 18497+1238 BPM 852 304 112.9 61
Show 18523+1432 STF2411 AB 95 13.3 62
Show 18523+1432 WAL 97 AC 87 60.1 62
Show 18523+1432 WAL 97 AD 118 83.8 62
Show 18479+1403 BPM 833 172 98.0 64
Show 18503+1229 BPM 858 57 69.2 66

 
 
WDS 18517+1331 : COMPONENTS
 
 
  A B C
B pa=21.1°
sep=0.94"
 
C pa=195.8°
sep=33.72"
pa=195.9°
sep=34.65"
 
D pa=291.0°
sep=70.95"
pa=290.3°
sep=70.95"
pa=315.4°
sep=81.30"
 
 
18517+1331 A
 
 
Name HD 174791 Coord arcsec 2000 185143.74+133106.9 Mag 8.46 Spectral class G5 (yellow)
PmRA 12.00 PmDE 0.0 SAO 104190 HIP 92565
Tycho2 1038-00509-1 HD 174791 GC 25877 ADS 11763
BD BD+13 3783
Tycho2
Tycho2 1038-00509-1 Pflag P RAmdeg 282.93226571 DEmdeg 13.51862080
PmRA 12.3 PmDE -0.1 E RAmdeg 9 E DEmdeg 10
E pmRA 1.7 E pmDE 1.6 EpRAm 1991.34 EpDEm 1991.31
Num 5 Q RAmdeg 1.1 Q DEmdeg 0.7 Q pmRA 1.1
Q pmDE 0.8 BTmag 9.404 E BTmag 0.022 VTmag 8.464
E VTmag 0.015 Prox 9 TYC T HIP 92565
CCDM A RAdeg 282.93221333 DEdeg 13.51857444 EpRA 1990 1.73
EpDE 1990 1.81 E RAdeg 9.1 E DEdeg 9.8 Posflg D
Corr 0.0
SAO
SAO 104190 DelFlag RA1950 PmRA1950 0.0009
DE1950 PmDE1950 0.007 Vmag 7.8 SpType G5
Double code Source 70 CatNum 25877 DM BD+13 3783
DMcomp BDsup HD 174791 M HD 0
GC 25877 RA1950rad 4.9280508 DE1950rad 0.23488069 PmRA2000 0.001
PmDE2000 0.007
Hipparcos
Catalog H HIP 92565 Proxy H RAhms 18 51 43.73
DEdms +13 31 06.9 Vmag 8.07 VarFlag R Vmag H
RAdeg 282.932 DEdeg 13.5186 AstroRef A Plx 3.51
CCDM 18517+1331 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 22 Rho 1.014 HD 174791 BD BD+13 3783
CD CP Dm number +13 3783 VIred 0.8
SpType G5 R SpType Coord arcsec 2000 185143.73+133106.9
Hipparcos 2
HIP 92565 Sn 15 So 3 Nc 2
RArad 4.9380986894 DErad 0.2359436537 Plx 3.83 PmRA 12.35
PmDE 0.97 E RArad 0.88 E DErad 0.86 E Plx 1.05
E pmRA 1.39 E pmDE 1.1 Hpmag 8.2214 E Hpmag 0.002
SHp 0.013 VA 0 BV 0.801 E BV 0.019
VI 0.83
CCDM
Ccdm 18517+1331 RComp Comp A Note1
Note2 Discov num DRAs 1.79 DDEs 6.2
R dRAs 10 Year Theta Rho
Obs 3 Vmag 8.1 Sp G5 PmNote *
PmRA 17 PmDE -13 Dm number +13 3783 Cat1 BD
Name2 +13 1846 Cat2 AGK2/3 HD 174791 M HD
ADS BDS A11763 M ADS BDS N IDS IDS 18471N1324A
HIC 92565
 
 
18517+1331 B
 
 
Coord arcsec 2000 185143.76+133107.8 Mag 9.64 PmRA 12.00 PmDE 0.0
Tycho2 1038-00509-2 Calc delta mag 1.18 Calc coord yes
Tycho2
Tycho2 1038-00509-2 Pflag P RAmdeg 282.93226571 DEmdeg 13.51862080
PmRA 12.3 PmDE -0.1 E RAmdeg 9 E DEmdeg 10
E pmRA 1.7 E pmDE 1.6 EpRAm 1991.34 EpDEm 1991.31
Num 5 Q RAmdeg 1.1 Q DEmdeg 0.7 Q pmRA 1.1
Q pmDE 0.8 BTmag 10.386 E BTmag 0.040 VTmag 9.644
E VTmag 0.031 Prox 9 TYC T HIP 92565
CCDM B RAdeg 282.93232861 DEdeg 13.51880556 EpRA 1990 1.72
EpDE 1990 1.81 E RAdeg 21.3 E DEdeg 22.7 Posflg D
Corr -0.1
CCDM
Ccdm 18517+1331 RComp Comp B Note1
Note2 Discov num STF2409 DRAs DDEs
R dRAs Year 1950 Theta 024 Rho 0.8
Obs 20 Vmag 9.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11763 M ADS BDS N IDS IDS 18471N1324B
HIC 92565
 
 
18517+1331 C
 
 
Coord arcsec 2000 185143.11+133034.4 Mag 12.96 PmRA 5.00 PmDE -8.0
Calc delta mag 4.5 Calc coord yes
CCDM
Ccdm 18517+1331 RComp Comp C Note1
Note2 Discov num STF2409 DRAs DDEs
R dRAs Year 1900 Theta 196 Rho 32.8
Obs 2 Vmag 10.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11763 M ADS BDS N IDS IDS 18471N1324C
HIC
 
 
18517+1331 D
 
 
Coord arcsec 2000 185139.20+133132.4 Mag 13.1 Calc delta mag 4.64 Calc coord yes