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Doubles in session


Current system
20216+2346
STF 2672
HD 193817


Nearby doubles
9' : 20217+2337
POU4398

10' : 20218+2337
POU4401

11' : 20222+2352
POU4406

12' : 20219+2355
POU4404

12' : 20219+2356
BKO 440

13' : 20207+2341
POU4388

14' : 20225+2346
POU4415

14' : 20223+2354
POU4410

14' : 20221+2357
POU4405

15' : 20207+2353
BKO 646

15' : 20205+2342
POU4384

17' : 20205+2353
POU4383AB

18' : 20224+2333
POU4412

18' : 20228+2340
POU4417

18' : 20203+2350
BKO 643

19' : 20217+2328
POU4396

19' : 20217+2327
POU4397

20' : 20227+2334
POU4416

20' : 20205+2334
POU4381

20' : 20219+2327
POU4402

20' : 20222+2328
POU4407

20' : 20229+2355
POU4420

21' : 20202+2351
BKO 642

22' : 20229+2357
POU4423

23' : 20212+2324
POU4390

23' : 20205+2329
POU4385



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.

20216+2346 STF 2672 (HD 193817)

 
 
20h 21m 36.19s +23° 45' 50.6" P.A. 350.00 sep 0.6 mag 9.34,9.60 Sp F8
 
 
Coord 2000 20216+2346 Discov num STF2672 Comp Coord arcsec 2000 20 21 36.19 +23 45 50.6
Date first 1831 Date last 2016 Obs 97
Pa first 278 Pa last 350.1 P.A. Now (θ) 350.1°
Sep first 1.1 Sep last 0.648 Sep. Now (ρ) 0.648"
Mag pri 9.34 Mag sec 9.60 delta mag (ΔM) 0.26 Spectral class F8 (yellow-white)
Pri motion ra +011 Sec motion ra +011
Pri motion dec +006 Sec motion dec +006
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 193817 Constellation Vulpecula SAO 88567 Tycho2 2155-00709-1
Gaia DR2 1831879040092466944 HD 193817 GC 28316 ADS 13750
 
 
ORBITAL ELEMENTS
 
 
Period (P)764y Periastron (T)2121.6y Semi-major axis (a)0.898a
Eccentricity (e)0.436 Inclination (i)41.4° Longitude of periastron (ω)41°
Node (Ω)40.6° Notes ReferenceLin2019c
Equinox2000 Last observation2016 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 339.6 0.668
2001 340.1 0.667
2002 340.7 0.666
2003 341.3 0.664
2004 341.9 0.663
2005 342.5 0.662
2006 343.0 0.660
2007 343.6 0.659
2008 344.2 0.658
2009 344.8 0.657
2010 345.4 0.656
2011 346.0 0.654
2012 346.6 0.653
2013 347.2 0.652
2014 347.8 0.651
2015 348.4 0.650
2016 349.0 0.649
2017 349.6 0.648
2018 350.3 0.646
2019 350.9 0.645
2020 351.5 0.644
2021 352.1 0.643
2022 352.7 0.642
2023 353.4 0.641
2024 354.0 0.640
2025 354.6 0.639
2026 355.2 0.638
2027 355.9 0.637
2028 356.5 0.636
2029 357.1 0.635
2030 357.8 0.634


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds20216%2B2346a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20216+2346 STF 2672 (HD 193817) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Lin2019c orb - Ling, J.F., Scardia, M., Prieur, J.-L., Pansecchi, L., Argyle, R.W., Aristidi, E., 2019IAUDS.198....1C
Lin2019c Zanutta, A., Abe, Bendjoya, Rivet, Suarez, & Vernet
Lin2019c Inf. Circ. 198, 3, 2019
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20216+2346 STF2672 2005 87 344 0.6 9.34 9.60 F8 202136.19+234550.6
20216+2346 STF2672 2006 90 343 0.7 9.34 9.60 F8 202136.19+234550.6
20216+2346 STF2672 2010 92 346 0.6 9.34 9.60 F8 202136.19+234550.6
20216+2346 STF2672 2016 96 350 0.7 9.34 9.60 F8 202136.19+234550.6

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

 
 
WDS 20216+2346 STF 2672 (HD 193817) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20216+2346 STF 2672 (HD 193817) : MEASURES
 
 
No records found.

 
 
WDS 20216+2346 (HD 193817) : VIRTUAL EYEPIECE
 
 

20216+2346 STF2672A mag 9.34 Sp F8 20216+2346 STF2672B sep 0.7 P.A. 350.90 mag 9.6 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 20216+2346 (HD 193817) : ALADIN DSS IMAGE @ 20h 21m 36.19s +23° 45' 50.6"
 
 
 
 
WDS 20216+2346 STF 2672 (HD 193817) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20216+2346 STF2672 distance=1' 20217+2337 POU4398 distance=9' 20218+2337 POU4401 distance=10' 20222+2352 POU4406 distance=11' 20219+2355 POU4404 distance=12' 20219+2356 BKO 440 distance=12' 20207+2341 POU4388 distance=13' 20225+2346 POU4415 distance=14' 20223+2354 POU4410 distance=14' 20221+2357 POU4405 distance=14' 20207+2353 BKO 646 distance=15' 20205+2342 POU4384 distance=15' 20205+2353 POU4383AB distance=17' 20205+2353 BKO 645AC distance=17' 20205+2353 BKO 645AD distance=17' 20224+2333 POU4412 distance=18' 20228+2340 POU4417 distance=18' 20203+2350 BKO 643 distance=18' 20217+2328 POU4396 distance=19' 20217+2327 POU4397 distance=19' 20227+2334 POU4416 distance=20' 20205+2334 POU4381 distance=20' 20219+2327 POU4402 distance=20' 20222+2328 POU4407 distance=20' 20229+2355 POU4420 distance=20' 20202+2351 BKO 642 distance=21' 20229+2357 POU4423 distance=22' 20212+2324 POU4390 distance=23' 20205+2329 POU4385 distance=23' 20229+2332 POU4422 distance=23' 20201+2334 BKO 641 distance=24' 20230+2332 POU4424 distance=24' 20212+2320 POU4391 distance=24' 20203+2331 BKO 644 distance=24' 20231+2332 POU4426 distance=25' 20205+2326 POU4382 distance=26' 20234+2343 POU4430 distance=26' 20225+2323 POU4413 distance=27' 20230+2405 POU4425 distance=27' 20235+2343 POU4431 distance=27' 20199+2332 POU4374 distance=28' 20199+2402 POU4375 distance=29' 20230+2328 J 3083 distance=29' 20195+2337 POU4367 distance=30' 20203+2321 POU4380 distance=30' 20231+2324 BKO 441 distance=31' 20232+2326 BKO 442AB distance=31' 20232+2326 BKO 442AC distance=31' 20233+2325 POU4428AB distance=32' 20233+2325 BKO 443BC distance=32' 20225+2317 POU4414 distance=32' 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 20216+2346 STF2672 350 0.6 1
Show 20217+2337 POU4398 229 18.1 9
Show 20218+2337 POU4401 154 17.6 10
Show 20222+2352 POU4406 12 4.8 11
Show 20219+2355 POU4404 254 15.2 12
Show 20219+2356 BKO 440 217 4.4 12
Show 20207+2341 POU4388 159 10.6 13
Show 20225+2346 POU4415 87 9.6 14
Show 20223+2354 POU4410 117 3.5 14
Show 20221+2357 POU4405 46 1.7 14
Show 20207+2353 BKO 646 146 6.1 15
Show 20205+2342 POU4384 12 11.4 15
Show 20205+2353 POU4383 AB 122 6.9 17
Show 20205+2353 BKO 645 AC 229 5.7 17
Show 20205+2353 BKO 645 AD 45 11.8 17
Show 20224+2333 POU4412 79 13.1 18
Show 20228+2340 POU4417 209 14.1 18
Show 20203+2350 BKO 643 147 2.5 18
Show 20217+2328 POU4396 339 15.2 19
Show 20217+2327 POU4397 31 12.3 19
Show 20227+2334 POU4416 172 6.1 20
Show 20205+2334 POU4381 160 18.5 20
Show 20219+2327 POU4402 80 12.5 20
Show 20222+2328 POU4407 167 10.4 20
Show 20229+2355 POU4420 23 7.2 20
Show 20202+2351 BKO 642 31 8.5 21
Show 20229+2357 POU4423 55 8.1 22
Show 20212+2324 POU4390 127 8.3 23
Show 20205+2329 POU4385 52 5.8 23
Show 20229+2332 POU4422 95 11.1 23
Show 20201+2334 BKO 641 98 8.0 24
Show 20230+2332 POU4424 81 14.2 24
Show 20212+2320 POU4391 252 11.4 24
Show 20203+2331 BKO 644 280 5.6 24
Show 20231+2332 POU4426 308 9.5 25
Show 20205+2326 POU4382 284 12.7 26
Show 20234+2343 POU4430 293 6.7 26
Show 20225+2323 POU4413 154 17.1 27
Show 20230+2405 POU4425 324 15.3 27
Show 20235+2343 POU4431 228 15.8 27
Show 20199+2332 POU4374 111 5.0 28
Show 20199+2402 POU4375 31 7.6 29
Show 20230+2328 J 3083 112 5.2 29
Show 20195+2337 POU4367 210 11.3 30
Show 20203+2321 POU4380 277 12.9 30
Show 20231+2324 BKO 441 139 5.1 31
Show 20232+2326 BKO 442 AB 1 3.4 31
Show 20232+2326 BKO 442 AC 274 4.4 31
Show 20233+2325 POU4428 AB 188 8.4 32
Show 20233+2325 BKO 443 BC 157 6.7 32
Show 20225+2317 POU4414 272 12.8 32

 
 
WDS 20216+2346 : COMPONENTS
 
 
  A
B pa=350.9°
sep=0.65"
 
 
20216+2346 A
 
 
Componente originario normalizzato AB Name HD 193817 Coord arcsec 2000 202136.19+234550.6 Mag 9.34
Spectral class F8 (yellow-white) PmRA 11.00 PmDE 6.0 SAO 88567
Tycho2 2155-00709-1 HD 193817 GC 28316 ADS 13750
DM BD+23 3983
Tycho2
Tycho2 2155-00709-1 Pflag RAmdeg 305.40074548 DEmdeg 23.76411358
PmRA 10.8 PmDE 6.4 E RAmdeg 8 E DEmdeg 8
E pmRA 1.0 E pmDE 1.0 EpRAm 1990.61 EpDEm 1990.53
Num 10 Q RAmdeg 1.1 Q DEmdeg 0.8 Q pmRA 1.2
Q pmDE 0.8 BTmag 9.329 E BTmag 0.018 VTmag 8.885
E VTmag 0.014 Prox 837 TYC T HIP
CCDM RAdeg 305.40071806 DEdeg 23.76409806 EpRA 1990 1.58
EpDE 1990 1.61 E RAdeg 7.9 E DEdeg 7.6 Posflg P
Corr -0.1
SAO
SAO 88567 DelFlag RA1950 PmRA1950 0.0019
DE1950 PmDE1950 0.017 Vmag 8.8 SpType F8
Double code Source 70 CatNum 28316 DM BD+23 3983
DMcomp BDsup HD 193817 M HD 0
GC 28316 RA1950rad 5.32080942 DE1950rad 0.41196577 PmRA2000 0.002
PmDE2000 0.014
CCDM
Ccdm 20216+2346 RComp Comp A Note1
Note2 Discov num DRAs 0.23 DDEs -8.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.5 Sp F8 PmNote *
PmRA 24 PmDE 27 Dm number +23 3983 Cat1 BD
Name2 +23 2046 Cat2 AGK2/3 HD 193817 M HD
ADS BDS A13750 M ADS BDS N IDS IDS 20173N2327A
HIC
 
 
20216+2346 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 202136.18+234551.2 Mag 9.6 PmRA 11.00
PmDE 6.0 Calc delta mag 0.26 Calc coord yes
CCDM
Ccdm 20216+2346 RComp Comp B Note1
Note2 Discov num STF2672 DRAs DDEs
R dRAs Year 1959 Theta 327 Rho 0.9
Obs 99 Vmag 9.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A13750 M ADS BDS N IDS IDS 20173N2327B
HIC