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Current system
20257+2521
STF 2682
HD 194596


Nearby doubles
5' : 20254+2520
POU4484

8' : 20253+2516
POU4482

9' : 20252+2517
POU4479

9' : 20262+2516
POU4494

12' : 20264+2514
POU4496

16' : 20253+2506
POU4483

17' : 20248+2511
COU 521

17' : 20244+2521
KPP2505

18' : 20256+2504
A 392

19' : 20264+2537
TVB 11

20' : 20246+2510
POU4463

22' : 20262+2501
POU4493

22' : 20248+2503
OSO 125AB

23' : 20269+2537
TDT2281

23' : 20242+2510
POU4454

26' : 20274+2510
POU4503

26' : 20242+2504
POU4452

27' : 20252+2456
POU4478

27' : 20240+2507
POU4443

28' : 20261+2455
POU4492

28' : 20238+2510
POU4439

29' : 20240+2505
J 557

29' : 20252+2454
POU4476AB

30' : 20240+2503
POU4442

33' : 20276+2502
BKO 575

35' : 20281+2510
POU4514



Selections
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Binary Systems
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Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20257+2521 STF 2682 (HD 194596)

 
 
20h 25m 40.97s +25° 21' 02.2" P.A. 298.00 sep 22.0 mag 8.34,10.17 Sp A2
 
 
Coord 2000 20257+2521 Discov num STF2682 Comp Coord arcsec 2000 20 25 40.97 +25 21 02.2
Date first 1892 Date last 2015 Obs 24
Pa first 302 Pa last 297.6 P.A. Now (θ) 297.6°
Sep first 20.3 Sep last 21.978 Sep. Now (ρ) 21.978"
Mag pri 8.34 Mag sec 10.17 delta mag (ΔM) 1.83 Spectral class A2 (white)
Pri motion ra +024 Sec motion ra +005
Pri motion dec +008 Sec motion dec +006
Notes
rPM=0.755
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 194596 Constellation Vulpecula SAO 88666 Tycho2 2160-00416-1
Gaia DR2 1832488478769869184 HD 194596 GC 28423
 
 
WDS 20257+2521 STF 2682 (HD 194596) : 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
20257+2521 STF2682 2006 15 290 21.4 8.34 10.17 A2 D 202540.97+252102.2
20257+2521 STF2682 2008 16 297 22.0 8.34 10.17 A2 D 202540.97+252102.2
20257+2521 STF2682 2010 19 298 21.9 8.34 10.17 A2 202540.97+252102.2
20257+2521 STF2682 2015 20 298 21.9 8.34 10.17 A2 202540.97+252102.2

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

 
 
WDS 20257+2521 STF 2682 (HD 194596) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20257+2521 STF 2682 (HD 194596) : MEASURES
 
 
No records found.

 
 
WDS 20257+2521 (HD 194596) : VIRTUAL EYEPIECE
 
 

20257+2521 STF2682A mag 8.34 Sp A2 20257+2521 STF2682B sep 20.3 P.A. 300.00 mag 10.17 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20257+2521 (HD 194596) : ALADIN DSS IMAGE @ 20h 25m 40.97s +25° 21' 02.2"
 
 
 
 
WDS 20257+2521 STF 2682 (HD 194596) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20257+2521 STF2682 distance=1' 20254+2520 POU4484 distance=5' 20253+2516 POU4482 distance=8' 20252+2517 POU4479 distance=9' 20262+2516 POU4494 distance=9' 20264+2514 POU4496 distance=12' 20253+2506 POU4483 distance=16' 20248+2511 COU 521 distance=17' 20244+2521 KPP2505 distance=17' 20256+2504 A 392 distance=18' 20264+2537 TVB 11 distance=19' 20246+2510 POU4463 distance=20' 20262+2501 POU4493 distance=22' 20248+2503 OSO 125AB distance=22' 20248+2503 OSO 125AC distance=22' 20269+2537 TDT2281 distance=23' 20242+2510 POU4454 distance=23' 20274+2510 POU4503 distance=26' 20242+2504 POU4452 distance=26' 20252+2456 POU4478 distance=27' 20240+2507 POU4443 distance=27' 20261+2455 POU4492 distance=28' 20238+2510 POU4439 distance=28' 20240+2505 J 557 distance=29' 20252+2454 POU4476AB distance=29' 20252+2454 POU4477AC distance=29' 20240+2503 POU4442 distance=30' 20276+2502 BKO 575 distance=33' 20281+2510 POU4514 distance=35' 20280+2508 POU4513 distance=35' 20241+2453 POU4448 distance=35' 20235+2502 POU4432 distance=35' 20280+2503 POU4510 distance=37' 20282+2507 BKO 577 distance=37' 20229+2521 POU4421 distance=39' 20277+2454 POU4504 distance=39' 20229+2522 POU4419 distance=39' 20243+2445 POU4455 distance=40' 20280+2456 POU4512 distance=41' 20255+2439 POU4485 distance=43' 20256+2438 POU4486 distance=44' 20292+2521 TDT2318AB distance=48' 20292+2521 POU4525AC distance=48' 20268+2436 POU4499 distance=48' 20222+2509 POU4408 distance=49' 20221+2524 KPP2534 distance=49' 20221+2516 BKO 831 distance=49' 20294+2514 POU4527 distance=51' 20248+2431 POU4470 distance=52' 20249+2430 POU4471 distance=52' 20220+2536 STJ 48 distance=52' 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 20257+2521 STF2682 298 22.0 1
Show 20254+2520 POU4484 29 10.6 5
Show 20253+2516 POU4482 57 3.2 8
Show 20252+2517 POU4479 331 15.8 9
Show 20262+2516 POU4494 202 15.7 9
Show 20264+2514 POU4496 24 10.9 12
Show 20253+2506 POU4483 229 5.5 16
Show 20248+2511 COU 521 280 0.5 17
Show 20244+2521 KPP2505 159 22.5 17
Show 20256+2504 A 392 292 0.9 18
Show 20264+2537 TVB 11 357 16.1 19
Show 20246+2510 POU4463 143 12.2 20
Show 20262+2501 POU4493 358 14.1 22
Show 20248+2503 OSO 125 AB 132 6.0 22
Show 20248+2503 OSO 125 AC 36 8.4 22
Show 20269+2537 TDT2281 3 1.8 23
Show 20242+2510 POU4454 157 4.1 23
Show 20274+2510 POU4503 283 18.1 26
Show 20242+2504 POU4452 182 10.1 26
Show 20252+2456 POU4478 339 15.7 27
Show 20240+2507 POU4443 103 8.9 27
Show 20261+2455 POU4492 327 4.2 28
Show 20238+2510 POU4439 86 9.4 28
Show 20240+2505 J 557 244 2.5 29
Show 20252+2454 POU4476 AB 113 10.9 29
Show 20252+2454 POU4477 AC 327 16.8 29
Show 20240+2503 POU4442 349 17.9 30
Show 20276+2502 BKO 575 349 3.7 33
Show 20281+2510 POU4514 93 17.0 35
Show 20280+2508 POU4513 39 7.2 35
Show 20241+2453 POU4448 231 17.9 35
Show 20235+2502 POU4432 308 19.3 35
Show 20280+2503 POU4510 356 13.9 37
Show 20282+2507 BKO 577 209 8.6 37
Show 20229+2521 POU4421 237 10.1 39
Show 20277+2454 POU4504 67 15.7 39
Show 20229+2522 POU4419 214 17.4 39
Show 20243+2445 POU4455 298 6.6 40
Show 20280+2456 POU4512 268 13.4 41
Show 20255+2439 POU4485 200 17.5 43
Show 20256+2438 POU4486 242 12.8 44
Show 20292+2521 TDT2318 AB 20 2.6 48
Show 20292+2521 POU4525 AC 2 12.5 48
Show 20268+2436 POU4499 44 7.3 48
Show 20222+2509 POU4408 297 14.6 49
Show 20221+2524 KPP2534 44 22.9 49
Show 20221+2516 BKO 831 89 6.9 49
Show 20294+2514 POU4527 208 13.8 51
Show 20248+2431 POU4470 78 9.5 52
Show 20249+2430 POU4471 243 7.6 52
Show 20220+2536 STJ 48 223 1.4 52

 
 
WDS 20257+2521 : COMPONENTS
 
 
  A
B pa=300.0°
sep=20.33"
 
 
20257+2521 A
 
 
Componente originario normalizzato AB Name HD 194596 Coord arcsec 2000 202540.97+252102.2 Mag 8.34
Spectral class A2 (white) PmRA 24.00 PmDE 8.0 SAO 88666
Tycho2 2160-00416-1 HD 194596 GC 28423 DM BD+24 4125
Tycho2
Tycho2 2160-00416-1 Pflag RAmdeg 306.42069421 DEmdeg 25.35060501
PmRA 25.1 PmDE 10.9 E RAmdeg 6 E DEmdeg 6
E pmRA 1.1 E pmDE 1.0 EpRAm 1991.07 EpDEm 1990.97
Num 13 Q RAmdeg 0.8 Q DEmdeg 1.3 Q pmRA 0.9
Q pmDE 1.4 BTmag 8.614 E BTmag 0.017 VTmag 8.335
E VTmag 0.012 Prox 216 TYC T HIP
CCDM RAdeg 306.42062944 DEdeg 25.35057944 EpRA 1990 1.58
EpDE 1990 1.50 E RAdeg 5.7 E DEdeg 6.1 Posflg
Corr 0.1
SAO
SAO 88666 DelFlag RA1950 PmRA1950 0.0022
DE1950 PmDE1950 0.014 Vmag 8.2 SpType A2
Double code Source 70 CatNum 28423 DM BD+24 4125
DMcomp BDsup HD 194596 M HD 0
GC 28423 RA1950rad 5.33871448 DE1950rad 0.43958324 PmRA2000 0.0023
PmDE2000 0.011
CCDM
Ccdm 20257+2521 RComp Comp A Note1
Note2 Discov num DRAs -1.06 DDEs 1.6
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.5 Sp A2 PmNote *
PmRA 23 PmDE -1 Dm number +24 4125 Cat1 BD
Name2 +25 2347 Cat2 AGK2/3 HD 194596 M HD
ADS BDS B10208 M ADS BDS N IDS IDS 20214N2501A
HIC
 
 
20257+2521 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 202539.67+252112.4 Mag 10.17 PmRA 5.00
PmDE 6.0 Tycho2 2160-01374-1 Calc delta mag 1.83 Calc coord yes
Tycho2
Tycho2 2160-01374-1 Pflag RAmdeg 306.41479150 DEmdeg 25.35343192
PmRA 4.2 PmDE 11.0 E RAmdeg 20 E DEmdeg 21
E pmRA 1.4 E pmDE 1.4 EpRAm 1988.52 EpDEm 1988.24
Num 5 Q RAmdeg 1.9 Q DEmdeg 0.9 Q pmRA 1.9
Q pmDE 0.9 BTmag 10.318 E BTmag 0.033 VTmag 10.173
E VTmag 0.040 Prox 216 TYC T HIP
CCDM RAdeg 306.41477444 DEdeg 25.35340722 EpRA 1990 1.57
EpDE 1990 1.52 E RAdeg 22.3 E DEdeg 23.0 Posflg
Corr 0.0
CCDM
Ccdm 20257+2521 RComp Comp B Note1
Note2 Discov num STF2682 DRAs DDEs
R dRAs Year 1892 Theta 302 Rho 20.3
Obs 5 Vmag 9.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS B10208 M ADS BDS N N IDS IDS 20214N2501B
HIC