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Current system
18569+5645
STF 2433 AC


Nearby doubles
24' : 18596+5635
STI2403

29' : 19000+5658
KPP3333

29' : 18563+5713
STI2400

32' : 18557+5714
TDT1129

33' : 18590+5713
STI2402

39' : 18569+5723
ES 1747

51' : 19014+5720
STI2406

55' : 19035+5637
TDS 963

55' : 19026+5719
STI2407

57' : 19035+5629
STI2409

57' : 19012+5730
STI2405

57' : 18510+5713
STI2393

64' : 19035+5614
ES 1749AB

66' : 18598+5543
ES 1748

67' : 18552+5750
HJ 2848AB

69' : 18563+5537
MLB 138AB

70' : 19037+5727
ARG 33

72' : 19039+5729
TDT1204

74' : 18542+5535
STI2395

77' : 18486+5613
TDT1062

81' : 18481+5721
STI2389

85' : 19050+5553
A 1389

89' : 18463+5630
DAL 31

89' : 18575+5814
STF2438

90' : 19070+5613
STI2414

92' : 19074+5618
STI2415



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.

18569+5645 STF 2433 AC

 
 
18h 56m 55.18s +56° 44' 57.4" P.A. 140.00 sep 39.5 mag 7.17,12.65 Sp F2V dist. 141.24 pc (460.72 l.y.)
 
 
Coord 2000 18569+5645 Discov num STF2433 Comp AC Coord arcsec 2000 18 56 55.18 +56 44 57.4
Date first 1905 Date last 2015 Obs 10
Pa first 126 Pa last 139.9 P.A. Now (θ) 139.9°
Sep first 36.0 Sep last 39.493 Sep. Now (ρ) 39.493"
Mag pri 7.17 Mag sec 12.65 delta mag (ΔM) 5.48 Spectral class F2V (yellow-white)
Pri motion ra +037 Sec motion ra -017
Pri motion dec +041 Sec motion dec -048
Notes
rPM=1.885
This double is not physical.
 
 
18569+5645 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 176409 31286 18 56 55 +56 44 57 STF 2433 AB 2017 23 122 7.4 7.17 10.09 2.92
Show 31286 18 56 55 +56 44 57 STF 2433 AC 2015 10 140 39.5 7.17 12.65 5.48 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Draco SAO 31286 HIP 93013 Tycho2 3927-01050-1
Gaia DR2 2153379130566804992 HD 176409 BD BD+56 2167 Distance 141.24
Distance ly 460.72
 
 
WDS 18569+5645 STF 2433 AC : 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
18569+5645 STF2433 AC 2006 4 139 39.5 7.17 12.10 F2V D 185655.18+564457.4
18569+5645 STF2433 AC 2015 6 140 39.5 7.17 12.65 F2V 185655.18+564457.4

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

 
 
WDS 18569+5645 STF 2433 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18569+5645 STF 2433 AC : MEASURES
 
 
No records found.

 
 
WDS 18569+5645 : VIRTUAL EYEPIECE
 
 

18569+5645 STF2433A mag 7.17 Sp F2V 18569+5645 STF2433B sep 5.2 P.A. 138.30 mag 10.09 18569+5645 STF2433C sep 33.3 P.A. 155.20 mag 12.65 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 18569+5645 : ALADIN DSS IMAGE @ 18h 56m 55.18s +56° 44' 57.4"
 
 
 
 
WDS 18569+5645 STF 2433 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18569+5645 STF2433AC distance=0' 18596+5635 STI2403 distance=24' 19000+5658 KPP3333 distance=29' 18563+5713 STI2400 distance=29' 18557+5714 TDT1129 distance=32' 18590+5713 STI2402 distance=33' 18569+5723 ES 1747 distance=39' 19014+5720 STI2406 distance=51' 19035+5637 TDS 963 distance=55' 19026+5719 STI2407 distance=55' 19035+5629 STI2409 distance=57' 19012+5730 STI2405 distance=57' 18510+5713 STI2393 distance=57' 19035+5614 ES 1749AB distance=64' 19035+5614 ABH 108AD distance=64' 19035+5614 ABH 108AE distance=64' 19035+5614 ES 1749BC distance=64' 18598+5543 ES 1748 distance=66' 18552+5750 HJ 2848AB distance=67' 18552+5750 HJ 2848AC distance=67' 18563+5537 MLB 138AB distance=69' 19037+5727 ARG 33 distance=70' 19039+5729 TDT1204 distance=72' 18542+5535 STI2395 distance=74' 18486+5613 TDT1062 distance=77' 18481+5721 STI2389 distance=81' 19050+5553 A 1389 distance=85' 18463+5630 DAL 31 distance=89' 18575+5814 STF2438 distance=89' 19070+5613 STI2414 distance=90' 19074+5618 STI2415 distance=92' 18458+5645 MLB 137 distance=92' 19055+5544 STI2412 distance=94' 18530+5816 ES 1746 distance=96' 18483+5752 STI2390BC distance=97' 18483+5752 STI2390AC distance=98' 18483+5752 GAT 3AB distance=98' 19087+5630 MLR 577 distance=99' 18549+5823 STI2397 distance=100' 19090+5700 LEP 164 distance=101' 18459+5731 STI2386 distance=101' 19090+5721 TOI1264 distance=105' 18494+5811 STI2392 distance=106' 18499+5516 MLR 574 distance=107' 18438+5654 BU 465 distance=108' 18433+5637 STI2383 distance=113' 19088+5748 UC 3817 distance=116' 18471+5523 SIG 5 distance=117' 18593+5450 A 1387AB distance=117' 18593+5450 MLR 575AB,C distance=117' 19108+5715 TDT1276 distance=117' 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 18569+5645 STF2433 AB 122 7.4
Show 18569+5645 STF2433 AC 140 39.5
Show 18596+5635 STI2403 92 6.4 24
Show 19000+5658 KPP3333 278 6.9 29
Show 18563+5713 STI2400 138 13.1 29
Show 18557+5714 TDT1129 14 0.5 32
Show 18590+5713 STI2402 56 4.4 33
Show 18569+5723 ES 1747 348 1.8 39
Show 19014+5720 STI2406 106 4.1 51
Show 19035+5637 TDS 963 13 1.4 55
Show 19026+5719 STI2407 43 6.1 55
Show 19035+5629 STI2409 212 5.0 57
Show 19012+5730 STI2405 192 22.0 57
Show 18510+5713 STI2393 205 11.5 57
Show 19035+5614 ES 1749 AB 181 6.4 64
Show 19035+5614 ABH 108 AD 258 46.8 64
Show 19035+5614 ABH 108 AE 205 39.2 64
Show 19035+5614 ES 1749 BC 252 17.9 64
Show 18598+5543 ES 1748 54 6.6 66
Show 18552+5750 HJ 2848 AB 289 6.5 67
Show 18552+5750 HJ 2848 AC 52 30.0 67
Show 18563+5537 MLB 138 AB 63 4.9 69
Show 19037+5727 ARG 33 57 10.6 70
Show 19039+5729 TDT1204 255 2.2 72
Show 18542+5535 STI2395 164 12.1 74
Show 18486+5613 TDT1062 305 0.8 77
Show 18481+5721 STI2389 226 13.9 81
Show 19050+5553 A 1389 231 0.2 85
Show 18463+5630 DAL 31 265 49.3 89
Show 18575+5814 STF2438 356 0.8 89
Show 19070+5613 STI2414 85 13.3 90
Show 19074+5618 STI2415 351 4.0 92
Show 18458+5645 MLB 137 165 2.0 92
Show 19055+5544 STI2412 292 11.3 94
Show 18530+5816 ES 1746 114 1.8 96
Show 18483+5752 STI2390 BC 85 2.9 97
Show 18483+5752 STI2390 AC 100 5.1 98
Show 18483+5752 GAT 3 AB 117 2.3 98
Show 19087+5630 MLR 577 277 0.8 99
Show 18549+5823 STI2397 235 14.4 100
Show 19090+5700 LEP 164 94 4.0 101
Show 18459+5731 STI2386 9 17.3 101
Show 19090+5721 TOI1264 314 1.9 105
Show 18494+5811 STI2392 142 5.3 106
Show 18499+5516 MLR 574 55 1.1 107
Show 18438+5654 BU 465 289 2.7 108
Show 18433+5637 STI2383 342 14.5 113
Show 19088+5748 UC 3817 134 6.0 116
Show 18471+5523 SIG 5 126 0.2 117
Show 18593+5450 A 1387 AB 351 0.3 117
Show 18593+5450 MLR 575 AB,C 227 21.8 117

 
 
WDS 18569+5645 : COMPONENTS
 
 
  A B
B pa=138.3°
sep=5.22"
 
C pa=155.2°
sep=33.27"
pa=158.3°
sep=28.33"
 
 
18569+5645 A
 
 
Name HD 176409 Coord arcsec 2000 185655.18+564457.4 Mag 7.17 Spectral class F2V (yellow-white)
PmRA 37.00 PmDE 41.0 SAO 31286 HIP 93013
Tycho2 3927-01050-1 HD 176409 GC 26051 ADS 11883
BD BD+56 2167
Tycho2
Tycho2 3927-01050-1 Pflag RAmdeg 284.23004437 DEmdeg 56.74938598
PmRA 31.7 PmDE 45.6 E RAmdeg 4 E DEmdeg 4
E pmRA 1.2 E pmDE 1.3 EpRAm 1991.26 EpDEm 1991.42
Num 9 Q RAmdeg 1.0 Q DEmdeg 0.8 Q pmRA 0.9
Q pmDE 0.8 BTmag 7.549 E BTmag 0.016 VTmag 7.173
E VTmag 0.010 Prox 74 TYC T HIP 93013
CCDM A RAdeg 284.22990750 DEdeg 56.74927917 EpRA 1990 1.46
EpDE 1990 1.58 E RAdeg 4.4 E DEdeg 4.2 Posflg
Corr -0.1
SAO
SAO 31286 DelFlag RA1950 PmRA1950 0.0025
DE1950 PmDE1950 0.052 Vmag 7 SpType F2
Double code Source 70 CatNum 26051 DM BD+56 2167
DMcomp BDsup HD 176409 M HD 0
GC 26051 RA1950rad 4.95672868 DE1950rad 0.98926859 PmRA2000 0.0031
PmDE2000 0.052
Hipparcos
Catalog H HIP 93013 Proxy H RAhms 18 56 55.18
DEdms +56 44 57.4 Vmag 7.11 VarFlag R Vmag G
RAdeg 284.23 DEdeg 56.7493 AstroRef A Plx 7.05
CCDM 18569+5645 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 123 Rho 7.378 HD 176409 BD BD+56 2167
CD CP Dm number +56 2167 VIred 0.45
SpType F2 R SpType Coord arcsec 2000 185655.18+564457.4
Hipparcos 2
HIP 93013 Sn 15 So 3 Nc 2
RArad 4.9607477338 DErad 0.9904617277 Plx 7.08 PmRA 36.83
PmDE 42.02 E RArad 0.49 E DErad 0.54 E Plx 0.51
E pmRA 0.55 E pmDE 0.66 Hpmag 7.1701 E Hpmag 0.0011
SHp 0.008 VA 0 BV 0.388 E BV 0.015
VI 0.45
CCDM
Ccdm 18569+5645 RComp Comp A Note1
Note2 Discov num DRAs 1.12 DDEs -1.9
R dRAs 10 Year Theta Rho
Obs 3 Vmag 7.1 Sp F2 PmNote *
PmRA 20 PmDE 51 Dm number +56 2167 Cat1 BD
Name2 31286 Cat2 SAO HD 176409 M HD
ADS BDS A11883 M ADS BDS N IDS IDS 18551N5637A
HIC 93013
 
 
18569+5645 B
 
 
Coord arcsec 2000 185655.60+564453.5 Mag 10.09 PmRA 37.00 PmDE 41.0
Calc delta mag 2.92 Calc coord yes
CCDM
Ccdm 18569+5645 RComp Comp B Note1
Note2 Discov num STF2433 DRAs DDEs
R dRAs Year 1834 Theta 124 Rho 7.6
Obs 8 Vmag 10.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11883 M ADS BDS N IDS IDS 18551N5637B
HIC 93013
 
 
18569+5645 C
 
 
Coord arcsec 2000 185656.88+564427.2 Mag 12.65 PmRA -17.00 PmDE -48.0
Calc delta mag 5.48 Calc coord yes
CCDM
Ccdm 18569+5645 RComp Comp C Note1
Note2 Discov num STF2433 DRAs DDEs
R dRAs Year 1905 Theta 127 Rho 36.1
Obs 2 Vmag 11.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11883 M ADS BDS N IDS IDS 18551N5637C
HIC