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Doubles in session


Current system
20521+0205
A 2286 AB


Nearby doubles
19' : 20510+0210
BAL1574

20' : 20510+0211
BAL1573

21' : 20521+0225
TDT2592

27' : 20537+0154
RST5473

29' : 20510+0227
BAL2037

32' : 20504+0222
GWP3004

37' : 20525+0130
BAL1575

44' : 20493+0156
OSO 136

59' : 20535+0300
HEI 819

60' : 20485+0143
RST5471

63' : 20481+0224
BAL2035

64' : 20544+0112
LDS4860

64' : 20531+0104
TDT2604

66' : 20525+0310
GWP3009

67' : 20509+0101
RST5472AB

67' : 20528+0311
HLD 43

79' : 20572+0144
UC 4342

82' : 20575+0214
BAL1577

83' : 20551+0314
UC 4324

83' : 20543+0321
BAL2039

83' : 20552+0314
BAL2040

84' : 20571+0128
J 2332

85' : 20472+0247
UC 4286

85' : 20514-0041
SKF1771

85' : 20549+0051
SKF1772

89' : 20486-0055
BAL 616



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.

20521+0205 A 2286 AB

 
 
20h 52m 08.54s +02° 05' 15.6" P.A. 5.00 sep 0.0 mag 9.14,9.30 Sp F0
 
 
Coord 2000 20521+0205 Discov num A  2286 Comp AB Coord arcsec 2000 20 52 08.54 +02 05 15.6
Date first 1910 Date last 2021 Obs 13
Pa first 127 Pa last 5.1 P.A. Now (θ) 5.1°
Sep first 0.3 Sep last 0.047 Sep. Now (ρ) 0.047"
Mag pri 9.14 Mag sec 9.30 delta mag (ΔM) 0.16 Spectral class F0 (yellow-white)
Pri motion ra +016 Sec motion ra
Pri motion dec +010 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
20521+0205 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 126310 20 52 09 +02 05 16 A 2286 AB 2021 13 5 0.0 9.14 9.30 0.16 Y <===
Show HD 198706 126310 20 52 09 +02 05 16 A 2286 AB,C 2021 21 48 1.1 9.14 10.09 0.95
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Aquarius SAO 126310 Tycho2 0516-01427-1 Gaia DR2 1730803581854622592
HD 198706 ADS 14372
 
 
ORBITAL ELEMENTS
 
 
Period (P)273y Periastron (T)2015.07y Semi-major axis (a)0.311a
Eccentricity (e)0.687 Inclination (i)60.6° Longitude of periastron (ω)226.8°
Node (Ω)83.3° Notes ReferenceTok2020e
Equinox Last observation2019 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 234.9 0.133
2001 237.5 0.132
2002 240.1 0.131
2003 242.7 0.130
2004 245.4 0.129
2005 248.2 0.127
2006 251.1 0.125
2007 254.0 0.123
2008 257.1 0.119
2009 260.4 0.115
2010 264.0 0.111
2011 267.9 0.105
2012 272.3 0.099
2013 277.3 0.092
2014 283.2 0.084
2015 290.3 0.076
2016 299.2 0.068
2017 310.3 0.061
2018 323.9 0.055
2019 339.5 0.053
2020 355.6 0.054
2021 10.1 0.058
2022 22.1 0.065
2023 31.6 0.074
2024 39.0 0.083
2025 44.8 0.093
2026 49.5 0.104
2027 53.3 0.114
2028 56.5 0.124
2029 59.3 0.135
2030 61.6 0.145


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


 
  


wds20521%2B0205a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20521+0205 A 2286 AB : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2020e St j Tokovinin, A., Mason, B.D., Mendez, R.A., Costa, E. & Horch, E.P. 2020AJ....160....7T
Tok2020e +orb AJ 160, 7, 2020
 
 
DISCOVERER
 
 
idgroup discov author
1 A Aitken, R.G.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20521+0205 A 2286 AB 1984 8 276 0.2 9.14 9.30 F0 205208.54+020515.6
20521+0205 A 2286 AB 2017 9 328 0.1 9.14 9.30 F0 205208.54+020515.6
20521+0205 A 2286 AB 2018 10 327 0.1 9.14 9.30 F0 205208.54+020515.6
20521+0205 A 2286 AB 2019 11 349 0.1 9.14 9.30 F0 205208.54+020515.6
20521+0205 A 2286 AB 2021 13 5 0.0 9.14 9.30 F0 205208.54+020515.6

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

 
 
WDS 20521+0205 A 2286 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20521+0205 A 2286 AB : MEASURES
 
 
No records found.

 
 
WDS 20521+0205 : VIRTUAL EYEPIECE
 
 

20521+0205 A 2286A mag 9.14 Sp F0 20521+0205 A 2286B mag 9.3 20521+0205 A 2286C sep 1.1 P.A. 47.80 mag 10.09 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 20521+0205 : ALADIN DSS IMAGE @ 20h 52m 08.54s +02° 05' 15.6"
 
 
 
 
WDS 20521+0205 A 2286 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20521+0205 A 2286AB distance=0' 20510+0210 BAL1574 distance=19' 20510+0211 BAL1573 distance=20' 20521+0225 TDT2592 distance=21' 20537+0154 RST5473 distance=27' 20510+0227 BAL2037 distance=29' 20504+0222 GWP3004 distance=32' 20525+0130 BAL1575 distance=37' 20493+0156 OSO 136 distance=44' 20535+0300 HEI 819 distance=59' 20485+0143 RST5471 distance=60' 20481+0224 BAL2035 distance=63' 20544+0112 LDS4860 distance=64' 20531+0104 TDT2604 distance=64' 20525+0310 GWP3009 distance=66' 20509+0101 TDT2577Aa,Ab distance=67' 20509+0101 RST5472AB distance=67' 20528+0311 HLD 43 distance=67' 20572+0144 UC 4342 distance=79' 20575+0214 BAL1577 distance=82' 20551+0314 UC 4324 distance=83' 20543+0321 BAL2039 distance=83' 20552+0314 BAL2040 distance=83' 20571+0128 J 2332 distance=84' 20472+0247 UC 4286 distance=85' 20514-0041 SKF1771 distance=85' 20549+0051 SKF1772 distance=85' 20486-0055 BAL 616 distance=89' 20471+0253 TDT2536 distance=90' 20510-0038 J 1711 distance=91' 20546-0042 A 877 distance=92' 20475+0105 BAL1220 distance=93' 20529+0337 BAL2547 distance=93' 20537+0336 BAL2548 distance=94' 20459+0211 GRV 377 distance=94' 20481+0053 CVR 873 distance=95' 20523-0030 BAL 927 distance=95' 20539-0035 J 2328 distance=96' 20585+0143 GWP3023 distance=98' 20455+0201 BAL1571 distance=100' 20584+0118 RST5474 distance=105' 20508-0020 BAL 926 distance=108' 20513+0353 GWP3006 distance=109' 20541+0357 HJ 3005 distance=116' 20551-0018 UC 4325 distance=116' 20595+0242 HJ 928 distance=116' 20578-0043 UC 4344 distance=119' 20575+0036 HWE 101AB distance=120' 20575+0036 HWE 101AC distance=120' 20572+0028 HWE 55AB distance=124' 20572+0028 BU 1496AC distance=124' 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 20521+0205 A 2286 AB 5 0.0
Show 20521+0205 A 2286 AB,C 48 1.1
Show 20510+0210 BAL1574 21 18.3 19
Show 20510+0211 BAL1573 225 5.6 20
Show 20521+0225 TDT2592 183 1.5 21
Show 20537+0154 RST5473 20 3.0 27
Show 20510+0227 BAL2037 2 6.4 29
Show 20504+0222 GWP3004 12 15.6 32
Show 20525+0130 BAL1575 175 16.6 37
Show 20493+0156 OSO 136 109 12.8 44
Show 20535+0300 HEI 819 135 0.2 59
Show 20485+0143 RST5471 14 0.6 60
Show 20481+0224 BAL2035 304 12.9 63
Show 20544+0112 LDS4860 138 3.4 64
Show 20531+0104 TDT2604 87 0.7 64
Show 20525+0310 GWP3009 237 76.6 66
Show 20509+0101 TDT2577 Aa,Ab 104 0.5 67
Show 20509+0101 RST5472 AB 77 3.7 67
Show 20528+0311 HLD 43 9 2.2 67
Show 20572+0144 UC 4342 239 14.2 79
Show 20575+0214 BAL1577 221 4.9 82
Show 20551+0314 UC 4324 290 9.9 83
Show 20543+0321 BAL2039 28 14.7 83
Show 20552+0314 BAL2040 68 8.4 83
Show 20571+0128 J 2332 231 3.1 84
Show 20472+0247 UC 4286 114 31.3 85
Show 20514-0041 SKF1771 13 1.2 85
Show 20549+0051 SKF1772 334 2.5 85
Show 20486-0055 BAL 616 206 2.4 89
Show 20471+0253 TDT2536 352 1.6 90
Show 20510-0038 J 1711 222 8.4 91
Show 20546-0042 A 877 9 0.6 92
Show 20475+0105 BAL1220 193 21.1 93
Show 20529+0337 BAL2547 220 8.5 93
Show 20537+0336 BAL2548 258 7.5 94
Show 20459+0211 GRV 377 354 27.3 94
Show 20481+0053 CVR 873 324 12.3 95
Show 20523-0030 BAL 927 285 4.5 95
Show 20539-0035 J 2328 351 3.2 96
Show 20585+0143 GWP3023 358 76.3 98
Show 20455+0201 BAL1571 307 6.8 100
Show 20584+0118 RST5474 194 2.0 105
Show 20508-0020 BAL 926 239 2.4 108
Show 20513+0353 GWP3006 117 24.4 109
Show 20541+0357 HJ 3005 300 30.5 116
Show 20551-0018 UC 4325 271 61.6 116
Show 20595+0242 HJ 928 74 16.5 116
Show 20578-0043 UC 4344 15 42.7 119
Show 20575+0036 HWE 101 AB 139 40.7 120
Show 20575+0036 HWE 101 AC 313 11.7 120
Show 20572+0028 HWE 55 AB 71 26.3 124

 
 
WDS 20521+0205 : COMPONENTS
 
 
  A B
B pa=5.1°
sep=0.05"
 
C pa=47.8°
sep=1.08"
pa=49.5°
sep=1.05"
 
 
20521+0205 A
 
 
Coord arcsec 2000 205208.54+020515.6 Mag 9.14 Spectral class F0 (yellow-white) PmRA 16.00
PmDE 10.0 SAO 126310 Tycho2 0516-01427-1 HD 198706
ADS 14372 DM BD+01 4383
Tycho2
Tycho2 0516-01427-1 Pflag P RAmdeg 313.03560259 DEmdeg 2.08767343
PmRA 16.3 PmDE 0.2 E RAmdeg 6 E DEmdeg 10
E pmRA 1.4 E pmDE 1.4 EpRAm 1991.54 EpDEm 1990.67
Num 6 Q RAmdeg 1.0 Q DEmdeg 0.7 Q pmRA 1.1
Q pmDE 0.6 BTmag 9.450 E BTmag 0.017 VTmag 9.135
E VTmag 0.015 Prox 10 TYC T HIP
CCDM RAdeg 313.03552778 DEdeg 2.08763583 EpRA 1990 1.80
EpDE 1990 1.45 E RAdeg 6.3 E DEdeg 9.5 Posflg D
Corr 0.0
SAO
SAO 126310 DelFlag RA1950 PmRA1950 0.0011
DE1950 PmDE1950 0.013 Vmag 8.9 SpType F0
Double code Source 30 CatNum 7308 DM BD+01 4383
DMcomp BDsup HD 198706 M HD 0
GC RA1950rad 5.45243998 DE1950rad 0.03313918 PmRA2000 0.0013
PmDE2000 0.01
CCDM
Ccdm 20521+0205 RComp Comp A Note1
Note2 Discov num DRAs 2.49 DDEs 15.9
R dRAs 10 Year Theta Rho
Obs 3 Vmag 9.2 Sp F0 PmNote *
PmRA 21 PmDE 6 Dm number +01 4383 Cat1 BD
Name2 +01 2511 Cat2 AGK2/3 HD 198706 M HD
ADS BDS A14372 M ADS BDS N IDS IDS 20471N0143A
HIC
 
 
20521+0205 B
 
 
Coord arcsec 2000 205208.54+020515.6 Mag 9.3 Calc delta mag 0.16 Calc coord yes
CCDM
Ccdm 20521+0205 RComp Comp B Note1
Note2 Discov num A 2286 DRAs DDEs
R dRAs Year 1944 Theta 129 Rho 0.3
Obs 5 Vmag 9.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14372 M ADS BDS N IDS IDS 20471N0143B
HIC
 
 
20521+0205 C
 
 
Coord arcsec 2000 205208.59+020516.3 Mag 10.09 PmRA 16.00 PmDE 0.0
Tycho2 0516-01427-2 Calc delta mag 0.95 Calc coord yes
Tycho2
Tycho2 0516-01427-2 Pflag P RAmdeg 313.03560259 DEmdeg 2.08767343
PmRA 16.3 PmDE 0.2 E RAmdeg 6 E DEmdeg 10
E pmRA 1.4 E pmDE 1.4 EpRAm 1991.54 EpDEm 1990.67
Num 6 Q RAmdeg 1.0 Q DEmdeg 0.7 Q pmRA 1.1
Q pmDE 0.6 BTmag 10.516 E BTmag 0.029 VTmag 10.085
E VTmag 0.027 Prox 10 TYC HIP
CCDM RAdeg 313.03572833 DEdeg 2.08783333 EpRA 1990 1.80
EpDE 1990 1.45 E RAdeg 13.3 E DEdeg 21.0 Posflg D
Corr 0.0
CCDM
Ccdm 20521+0205 RComp Comp C Note1
Note2 Discov num A 2286 DRAs DDEs
R dRAs Year 1951 Theta 034 Rho 0.9
Obs 7 Vmag 10.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14372 M ADS BDS N IDS IDS 20471N0143C
HIC