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Doubles in session


Current system
21355+2427
HU 371
HD 205541


Nearby doubles
4' : 21356+2429
POU5424

6' : 21358+2428
POU5427

14' : 21348+2438
POU5415

18' : 21344+2438
POU5413

18' : 21364+2439
POU5431

20' : 21359+2445
POU5429

20' : 21342+2416
POU5410

21' : 21344+2443
POU5414

25' : 21356+2403
POU5423

26' : 21351+2452
POU5416AB

26' : 21343+2406
POU5411

27' : 21343+2449
POU5412

27' : 21373+2423
POU5438AB

28' : 21355+2454
POU5421

29' : 21359+2455
POU5428

30' : 21352+2358
POU5420

33' : 21356+2500
POU5422

33' : 21377+2417
POU5442

37' : 21372+2454
POU5435

38' : 21332+2406
UC 4496

38' : 21373+2400
POU5437

39' : 21374+2454
POU5440

39' : 21338+2356
POU5409

40' : 21330+2408
OSO 149AB

41' : 21334+2456
POU5408

43' : 21385+2429
POU5447AB



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.

21355+2427 HU 371 (HD 205541)

 
 
21h 35m 27.03s +24° 27' 07.9" P.A. 319.00 sep 0.3 mag 6.83,7.27 Sp A3V dist. 197.63 pc (644.67 l.y.)
 
 
Coord 2000 21355+2427 Discov num HU  371 Comp Coord arcsec 2000 21 35 27.03 +24 27 07.9
Date first 1901 Date last 2009 Obs 124
Pa first 163 Pa last 318.8 P.A. Now (θ) 333.3°
Sep first 0.2 Sep last 0.264 Sep. Now (ρ) 0.217"
Mag pri 6.83 Mag sec 7.27 delta mag (ΔM) 0.44 Spectral class A3V (white)
Pri motion ra +015 Sec motion ra
Pri motion dec -007 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 205541 Constellation Pegasus SAO 89819 HIP 106605
Tycho2 2192-01904-1 Gaia DR2 1797854485265424512 HD 205541 HR 8258
GC 30231 ADS 15115 BD BD+23 4346 Distance 197.63
Distance ly 644.67
 
 
ORBITAL ELEMENTS
 
 
Period (P)178.6y Periastron (T)1870.2y Semi-major axis (a)0.272a
Eccentricity (e)0.31 Inclination (i)59.7° Longitude of periastron (ω)296.6°
Node (Ω)136.9° Notesn ReferenceWSI2006b
Equinox2000 Last observation2005 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 310.1 0.301
2001 310.9 0.300
2002 311.7 0.298
2003 312.5 0.297
2004 313.3 0.295
2005 314.1 0.293
2006 314.9 0.291
2007 315.8 0.289
2008 316.7 0.286
2009 317.5 0.283
2010 318.4 0.280
2011 319.4 0.277
2012 320.3 0.273
2013 321.3 0.270
2014 322.3 0.266
2015 323.3 0.261
2016 324.4 0.257
2017 325.5 0.252
2018 326.6 0.247
2019 327.8 0.241
2020 329.1 0.236
2021 330.4 0.230
2022 331.8 0.224
2023 333.3 0.217
2024 334.8 0.211
2025 336.5 0.204
2026 338.3 0.197
2027 340.2 0.189
2028 342.3 0.182
2029 344.5 0.175
2030 347.0 0.167


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


 
  


wds21355%2B2427a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 21355+2427 HU 371 (HD 205541) : NOTES
 
 
discov_num notes refcode
HU 371 Possibly triple; Dominion Astrophysical Observatory spectra showed
a double spectrum.
Only elements P and T have been amended by Starikova (1977) from the Sta1977a
orbit of Baize (1961). Baz1961a
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 4.87 +/- 3.02, 6.02, and 2.00 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Baz1961a orb - Baize, P. 1961JO.....44...21B
Baz1961a J. Obs. 44, 21-34, 1961
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Sta1977a orb - Starikova, G.A. 1977ATsir.961....7S
Sta1977a Astron. Tsirk. #961, 7, 1977
WSI2006b Su j Mason, B.D., Hartkopf, W.I., Wycoff, G.L., & Holdenried, E.R. 2006AJ....132.2219M
WSI2006b +orb AJ 132, 2219, 2006
 
 
DISCOVERER
 
 
idgroup discov author
1 HU Hussey, W.F.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21355+2427 HU 371 2005 133 310 0.3 6.83 7.27 A3V NOD 213527.03+242707.9
21355+2427 HU 371 2006 137 315 0.3 6.83 7.27 A3V NOD 213527.03+242707.9
21355+2427 HU 371 2009 124 319 0.3 6.83 7.27 A3V NO 213527.03+242707.9

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

 
 
WDS 21355+2427 HU 371 (HD 205541) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21355+2427 HU 371 (HD 205541) : MEASURES
 
 
No records found.

 
 
WDS 21355+2427 (HD 205541) : VIRTUAL EYEPIECE
 
 

21355+2427 HU 371A mag 6.83 Sp A3V 21355+2427 HU 371B sep 0.2 P.A. 321.40 mag 7.27 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 21355+2427 (HD 205541) : ALADIN DSS IMAGE @ 21h 35m 27.03s +24° 27' 07.9"
 
 
 
 
WDS 21355+2427 HU 371 (HD 205541) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21355+2427 HU 371 distance=0' 21356+2429 POU5424 distance=4' 21358+2428 POU5427 distance=6' 21348+2438 POU5415 distance=14' 21344+2438 POU5413 distance=18' 21364+2439 POU5431 distance=18' 21359+2445 POU5429 distance=20' 21342+2416 POU5410 distance=20' 21344+2443 POU5414 distance=21' 21356+2403 POU5423 distance=25' 21351+2452 POU5416AB distance=26' 21351+2452 POU5417AC distance=26' 21343+2406 POU5411 distance=26' 21343+2449 POU5412 distance=27' 21373+2423 POU5438AB distance=27' 21373+2423 BKO 488AC distance=27' 21355+2454 POU5421 distance=28' 21359+2455 POU5428 distance=29' 21352+2358 POU5420 distance=30' 21356+2500 POU5422 distance=33' 21377+2417 POU5442 distance=33' 21372+2454 POU5435 distance=37' 21332+2406 UC 4496 distance=38' 21373+2400 POU5437 distance=38' 21374+2454 POU5440 distance=39' 21338+2356 POU5409 distance=39' 21330+2408 HDS3065Aa,Ab distance=40' 21330+2408 OSO 149AB distance=40' 21330+2408 OSO 149AC distance=40' 21334+2456 POU5408 distance=41' 21385+2429 BKO 626BC distance=42' 21385+2429 POU5447AB distance=43' 21371+2503 DAM 666BD distance=43' 21324+2434 MCT 12 distance=43' 21371+2503 POU5433AB distance=43' 21371+2503 POU5434AC distance=43' 21323+2433 POU5399AB distance=44' 21323+2433 BKO 487AC distance=44' 21386+2429 BKO 627 distance=44' 21384+2413 POU5446 distance=44' 21323+2439 POU5401 distance=44' 21322+2437 BKO 485 distance=45' 21322+2430 BKO 486 distance=46' 21323+2408 POU5402 distance=48' 21351+2340 POU5418 distance=48' 21328+2459 POU5405 distance=48' 21351+2515 POU5419 distance=49' 21390+2433 POU5450 distance=50' 21333+2506 POU5407AB distance=50' 21372+2511 POU5436 distance=50' 21378+2346 POU5441 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 21355+2427 HU 371 319 0.3
Show 21356+2429 POU5424 64 8.5 4
Show 21358+2428 POU5427 205 8.4 6
Show 21348+2438 POU5415 141 10.8 14
Show 21344+2438 POU5413 309 16.1 18
Show 21364+2439 POU5431 90 4.2 18
Show 21359+2445 POU5429 340 11.5 20
Show 21342+2416 POU5410 251 13.5 20
Show 21344+2443 POU5414 130 25.1 21
Show 21356+2403 POU5423 40 3.4 25
Show 21351+2452 POU5416 AB 358 11.1 26
Show 21351+2452 POU5417 AC 125 13.4 26
Show 21343+2406 POU5411 200 8.5 26
Show 21343+2449 POU5412 283 6.4 27
Show 21373+2423 POU5438 AB 138 16.4 27
Show 21373+2423 BKO 488 AC 235 5.0 27
Show 21355+2454 POU5421 37 2.8 28
Show 21359+2455 POU5428 88 11.1 29
Show 21352+2358 POU5420 221 15.1 30
Show 21356+2500 POU5422 168 11.4 33
Show 21377+2417 POU5442 228 14.7 33
Show 21372+2454 POU5435 155 17.5 37
Show 21332+2406 UC 4496 214 16.5 38
Show 21373+2400 POU5437 106 17.0 38
Show 21374+2454 POU5440 305 4.2 39
Show 21338+2356 POU5409 334 10.6 39
Show 21330+2408 HDS3065 Aa,Ab 95 0.2 40
Show 21330+2408 OSO 149 AB 285 24.6 40
Show 21330+2408 OSO 149 AC 66 12.0 40
Show 21334+2456 POU5408 73 16.5 41
Show 21385+2429 BKO 626 BC 212 11.9 42
Show 21385+2429 POU5447 AB 256 18.6 43
Show 21371+2503 DAM 666 BD 299 10.3 43
Show 21324+2434 MCT 12 237 1.6 43
Show 21371+2503 POU5433 AB 204 8.2 43
Show 21371+2503 POU5434 AC 131 4.6 43
Show 21323+2433 POU5399 AB 82 3.8 44
Show 21323+2433 BKO 487 AC 11 9.1 44
Show 21386+2429 BKO 627 306 8.6 44
Show 21384+2413 POU5446 89 8.3 44
Show 21323+2439 POU5401 18.7 44
Show 21322+2437 BKO 485 141 10.1 45
Show 21322+2430 BKO 486 350 8.5 46
Show 21323+2408 POU5402 110 5.5 48
Show 21351+2340 POU5418 198 6.4 48
Show 21328+2459 POU5405 232 4.1 48
Show 21351+2515 POU5419 173 13.4 49
Show 21390+2433 POU5450 287 12.0 50
Show 21333+2506 POU5407 AB 15 17.2 50
Show 21372+2511 POU5436 122 12.7 50
Show 21378+2346 POU5441 193 7.3 52

 
 
WDS 21355+2427 : COMPONENTS
 
 
  A
B pa=321.4°
sep=0.25"
 
 
21355+2427 A
 
 
Componente originario normalizzato AB Name HD 205541 Coord arcsec 2000 213527.03+242707.9 Mag 6.83
Spectral class A3V (white) PmRA 15.00 PmDE -7.0 SAO 89819
HIP 106605 Tycho2 2192-01904-1 HD 205541 HR 8258
GC 30231 BD BD+23 4346
Tycho2
Tycho2 2192-01904-1 Pflag RAmdeg 323.86262144 DEmdeg 24.45217643
PmRA 13.1 PmDE -11.7 E RAmdeg 3 E DEmdeg 4
E pmRA 1.0 E pmDE 0.9 EpRAm 1991.62 EpDEm 1991.55
Num 15 Q RAmdeg 1.0 Q DEmdeg 1.2 Q pmRA 1.0
Q pmDE 1.2 BTmag 6.408 E BTmag 0.014 VTmag 6.253
E VTmag 0.009 Prox 999 TYC T HIP 106605
CCDM AB RAdeg 323.86258861 DEdeg 24.45220306 EpRA 1990 1.77
EpDE 1990 1.85 E RAdeg 3.4 E DEdeg 3.7 Posflg P
Corr -0.1
SAO
SAO 89819 DelFlag RA1950 PmRA1950 0.0008
DE1950 PmDE1950 -0.007 Vmag 6.1 SpType A3
Double code Source 70 CatNum 30231 DM BD+23 4346
DMcomp BDsup HD 205541 M HD 0
GC 30231 RA1950rad 5.64258703 DE1950rad 0.42286366 PmRA2000 0.0008
PmDE2000 -0.011
Hipparcos
Catalog H HIP 106605 Proxy H RAhms 21 35 27.03
DEdms +24 27 07.9 Vmag 6.22 VarFlag R Vmag H
RAdeg 323.863 DEdeg 24.4522 AstroRef A Plx 4.73
CCDM 21355+2427 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 303 Rho 0.301 HD 205541 BD BD+23 4346
CD CP Dm number +23 4346 VIred 0.15
SpType A4V R SpType Coord arcsec 2000 213527.03+242707.9
Hipparcos 2
HIP 106605 Sn 15 So 3 Nc 2
RArad 5.6524690388 DErad 0.4267711664 Plx 5.06 PmRA 13.37
PmDE -10.92 E RArad 0.39 E DErad 0.34 E Plx 0.52
E pmRA 0.47 E pmDE 0.4 Hpmag 6.2741 E Hpmag 0.001
SHp 0.007 VA 0 BV 0.141 E BV 0.004
VI 0.16
CCDM
Ccdm 21355+2427 RComp Comp A Note1
Note2 Discov num DRAs -2.95 DDEs 8.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 6.6 Sp A3 PmNote *
PmRA 26 PmDE -8 Dm number +23 4346 Cat1 BD
Name2 +24 2347 Cat2 AGK2/3 HD 205541 M HD
ADS BDS A15115 M ADS BDS N IDS IDS 21309N2400A
HIC 106605
 
 
21355+2427 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 213527.02+242708.1 Mag 7.27 Calc delta mag 0.44
Calc coord yes
CCDM
Ccdm 21355+2427 RComp Comp B Note1 *
Note2 Discov num HU 371 DRAs DDEs
R dRAs Year 1960 Theta 277 Rho 0.2
Obs 99 Vmag 7.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A15115 M ADS BDS N IDS IDS 21309N2400B
HIC 106605