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Doubles in session


Current system
18255+2600
STF 2318
HD 169819


Nearby doubles
21' : 18270+2603
L 24

22' : 18269+2551
BRT 182

27' : 18266+2537
LDS4787

32' : 18267+2627
BU 1326AB

32' : 18278+2557
DAM 285

40' : 18277+2536
HDS2612AB

40' : 18257+2639
COU 815

45' : 18224+2617
NSN 704

47' : 18265+2645
TDT 870

50' : 18257+2649
DAM1237

53' : 18259+2652
UC 3578

54' : 18215+2603
A 243

55' : 18223+2633
TDT 819

55' : 18251+2654
AG 361

56' : 18296+2603
HDS2619AB

59' : 18257+2503
POU3409

59' : 18276+2509
KU 117

65' : 18280+2655
TDT 893

68' : 18290+2511
TDT 902

70' : 18306+2606
UC 3598

72' : 18207+2530
BRT3330

73' : 18296+2647
A 245

76' : 18280+2708
ES 475

78' : 18201+2532
STF2309

80' : 18305+2519
A 246

82' : 18265+2721
BU 264



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.

18255+2600 STF 2318 (HD 169819)

 
 
18h 25m 28.43s +26° 00' 04.9" P.A. 248.00 sep 21.0 mag 8.49,10.42 Sp K2III
 
 
Coord 2000 18255+2600 Discov num STF2318 Comp Coord arcsec 2000 18 25 28.43 +26 00 04.9
Date first 1829 Date last 2015 Obs 31
Pa first 257 Pa last 248.1 P.A. Now (θ) 248.1°
Sep first 12.9 Sep last 20.997 Sep. Now (ρ) 20.997"
Mag pri 8.49 Mag sec 10.42 delta mag (ΔM) 1.93 Spectral class K2III (yellow-orange)
Pri motion ra +002 Sec motion ra +005
Pri motion dec +000 Sec motion dec -016
Notes
rPM=0.971
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 169819 Constellation Hercules SAO 86030 Tycho2 2110-00981-1
Gaia DR2 4584911265325748096 HD 169819 GC 25156
 
 
WDS 18255+2600 STF 2318 (HD 169819) : 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
18255+2600 STF2318 2006 22 249 20.5 8.49 10.70 K2III D 182528.43+260004.9
18255+2600 STF2318 2008 23 249 20.7 8.49 10.70 K2III D 182528.43+260004.9
18255+2600 STF2318 2010 26 248 20.9 8.49 10.42 K2III 182528.43+260004.9
18255+2600 STF2318 2015 27 248 21.0 8.49 10.42 K2III 182528.43+260004.9

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

 
 
WDS 18255+2600 STF 2318 (HD 169819) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18255+2600 STF 2318 (HD 169819) : MEASURES
 
 
No records found.

 
 
WDS 18255+2600 (HD 169819) : VIRTUAL EYEPIECE
 
 

18255+2600 STF2318A mag 8.49 Sp K2III 18255+2600 STF2318B sep 19.2 P.A. 245.90 mag 10.42 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 18255+2600 (HD 169819) : ALADIN DSS IMAGE @ 18h 25m 28.43s +26° 00' 04.9"
 
 
 
 
WDS 18255+2600 STF 2318 (HD 169819) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18255+2600 STF2318 distance=1' 18253+2605 STF2317BC distance=6' 18253+2605 HDS2605Aa,Ab distance=6' 18253+2605 STF2317A,BC distance=6' 18253+2605 STF2317AD distance=6' 18253+2605 ABH 99AE distance=6' 18253+2605 ABH 99AF distance=6' 18270+2603 L 24 distance=21' 18269+2551 BRT 182 distance=22' 18266+2537 LDS4787 distance=27' 18267+2627 GUI 21DE distance=31' 18267+2627 BU 1326AB distance=32' 18267+2627 BU 1326AC distance=32' 18267+2627 GUI 21AD distance=32' 18278+2557 DAM 285 distance=32' 18277+2536 HDS2612AB distance=40' 18277+2536 DAM1238AC distance=40' 18257+2639 COU 815 distance=40' 18224+2617 NSN 704 distance=45' 18265+2645 TDT 870 distance=47' 18257+2649 DAM1237 distance=50' 18259+2652 UC 3578 distance=53' 18215+2603 A 243 distance=54' 18223+2633 TDT 819 distance=55' 18251+2654 AG 361 distance=55' 18296+2603 HDS2619AB distance=56' 18257+2503 POU3409 distance=59' 18276+2509 KU 117 distance=59' 18280+2655 TDT 893 distance=65' 18290+2511 TDT 902 distance=68' 18306+2606 UC 3598 distance=70' 18207+2530 BRT3330 distance=72' 18296+2647 A 245 distance=73' 18280+2708 ES 475 distance=76' 18201+2532 STF2309 distance=78' 18305+2519 A 246 distance=80' 18265+2721 BU 264 distance=82' 18231+2445 POU3398AB distance=82' 18231+2445 POU3398AC distance=82' 18250+2724 STF2315AB distance=84' 18250+2724 STF2315AC distance=84' 18250+2724 BU 9009AD distance=84' 18278+2442 STF2320 distance=85' 18250+2724 HO 84DE distance=85' 18234+2440 POU3402 distance=86' 18233+2439 POU3401 distance=86' 18239+2435 POU3406 distance=88' 18312+2516 A 248 distance=90' 18192+2525 HLM 11 distance=90' 18319+2516 GCB 33 distance=91' 18186+2557 TDT 788 distance=93' 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 18255+2600 STF2318 248 21.0 1
Show 18253+2605 STF2317 BC 323 1.4 6
Show 18253+2605 HDS2605 Aa,Ab 84 1.2 6
Show 18253+2605 STF2317 A,BC 224 23.0 6
Show 18253+2605 STF2317 AD 189 44.5 6
Show 18253+2605 ABH 99 AE 206 38.2 6
Show 18253+2605 ABH 99 AF 208 68.7 6
Show 18270+2603 L 24 273 3.4 21
Show 18269+2551 BRT 182 347 4.4 22
Show 18266+2537 LDS4787 129 84.6 27
Show 18267+2627 GUI 21 DE 345 22.9 31
Show 18267+2627 BU 1326 AB 107 5.5 32
Show 18267+2627 BU 1326 AC 60 61.8 32
Show 18267+2627 GUI 21 AD 285 162.8 32
Show 18278+2557 DAM 285 67 5.8 32
Show 18277+2536 HDS2612 AB 110 4.5 40
Show 18277+2536 DAM1238 AC 277 15.2 40
Show 18257+2639 COU 815 144 1.6 40
Show 18224+2617 NSN 704 142 4.0 45
Show 18265+2645 TDT 870 73 0.9 47
Show 18257+2649 DAM1237 10 10.6 50
Show 18259+2652 UC 3578 185 4.5 53
Show 18215+2603 A 243 69 2.2 54
Show 18223+2633 TDT 819 216 0.6 55
Show 18251+2654 AG 361 13 3.8 55
Show 18296+2603 HDS2619 AB 110 0.6 56
Show 18257+2503 POU3409 248 12.2 59
Show 18276+2509 KU 117 16 19.5 59
Show 18280+2655 TDT 893 344 0.5 65
Show 18290+2511 TDT 902 30 0.9 68
Show 18306+2606 UC 3598 355 46.3 70
Show 18207+2530 BRT3330 287 3.8 72
Show 18296+2647 A 245 1 3.4 73
Show 18280+2708 ES 475 223 10.7 76
Show 18201+2532 STF2309 352 3.4 78
Show 18305+2519 A 246 164 1.5 80
Show 18265+2721 BU 264 8.0 82
Show 18231+2445 POU3398 AB 156 12.3 82
Show 18231+2445 POU3398 AC 134 11.6 82
Show 18250+2724 STF2315 AB 117 0.6 84
Show 18250+2724 STF2315 AC 79 44.9 84
Show 18250+2724 BU 9009 AD 290 118.0 84
Show 18278+2442 STF2320 1 0.9 85
Show 18250+2724 HO 84 DE 322 4.4 85
Show 18234+2440 POU3402 59 6.8 86
Show 18233+2439 POU3401 124 12.3 86
Show 18239+2435 POU3406 178 4.2 88
Show 18312+2516 A 248 31 0.6 90
Show 18192+2525 HLM 11 166 19.6 90
Show 18319+2516 GCB 33 50 5.3 91
Show 18186+2557 TDT 788 264 0.6 93

 
 
WDS 18255+2600 : COMPONENTS
 
 
  A
B pa=245.9°
sep=19.18"
 
 
18255+2600 A
 
 
Componente originario normalizzato AB Name HD 169819 Coord arcsec 2000 182528.43+260004.9 Mag 8.49
Spectral class K2III (yellow-orange) PmRA 2.00 PmDE 0.0 SAO 86030
Tycho2 2110-00981-1 HD 169819 GC 25156 DM BD+25 3520
Tycho2
Tycho2 2110-00981-1 Pflag RAmdeg 276.36846509 DEmdeg 26.00136263
PmRA 2.7 PmDE 1.3 E RAmdeg 8 E DEmdeg 8
E pmRA 1.2 E pmDE 1.1 EpRAm 1990.89 EpDEm 1990.77
Num 10 Q RAmdeg 1.0 Q DEmdeg 0.5 Q pmRA 1.0
Q pmDE 0.5 BTmag 9.924 E BTmag 0.023 VTmag 8.493
E VTmag 0.013 Prox 999 TYC T HIP
CCDM RAdeg 276.36845833 DEdeg 26.00135944 EpRA 1990 1.55
EpDE 1990 1.61 E RAdeg 7.8 E DEdeg 7.7 Posflg
Corr 0.0
SAO
SAO 86030 DelFlag RA1950 PmRA1950 0.0003
DE1950 PmDE1950 -0.01 Vmag 8 SpType K0
Double code Source 70 CatNum 25156 DM BD+25 3520
DMcomp BDsup HD 169819 M HD 0
GC 25156 RA1950rad 4.81471157 DE1950rad 0.45328876 PmRA2000 0.0004
PmDE2000 -0.011
CCDM
Ccdm 18255+2600 RComp Comp A Note1
Note2 Discov num DRAs -1.56 DDEs 5.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.1 Sp K0 PmNote *
PmRA 6 PmDE 8 Dm number +25 3520 Cat1 BD
Name2 +25 1922 Cat2 AGK2/3 HD 169819 M HD
ADS BDS B 8551 M ADS BDS N IDS IDS 18214N2557A
HIC
 
 
18255+2600 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 182527.13+255957.1 Mag 10.42 PmRA 5.00
PmDE -16.0 Calc delta mag 1.93 Calc coord yes
CCDM
Ccdm 18255+2600 RComp Comp B Note1
Note2 Discov num STF2318 DRAs DDEs
R dRAs Year 1829 Theta 254 Rho 20.8
Obs 7 Vmag 10.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS B 8551 M ADS BDS N IDS IDS 18214N2557B
HIC