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Doubles in session


Current system
21310-3633
B 1008 AB


Nearby doubles
38' : 21318-3709
B 1896

56' : 21271-3700
BRT1820

57' : 21318-3538
KPP2207

60' : 21265-3608
NSN 468

60' : 21318-3534
B 1392

78' : 21265-3728
KPP 623

83' : 21370-3553
CBL 184

89' : 21377-3557
BRT1822

92' : 21380-3706
BRT1823

96' : 21232-3653
SUB 9

96' : 21347-3509
B 1393

101' : 21339-3806
B 2496

105' : 21263-3801
B 2494

105' : 21304-3448
HJ 5274

108' : 21236-3734
TDT2941

108' : 21225-3600
RST3284

121' : 21315-3834
I 1123AB

122' : 21251-3812
RST5478

122' : 21209-3639
B 1006

122' : 21406-3559
BRT1824

122' : 21247-3458
B 528

123' : 21224-3529
BRT1819

124' : 21220-3733
B 525

126' : 21307-3838
B 530AB

127' : 21360-3824
RST2180

129' : 21232-3800
LDS 741



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.

21310-3633 B 1008 AB

 
 
21h 30m 57.70s -36° 32' 49.7" P.A. 206.00 sep 0.1 mag 8.87,8.06 Sp F3V dist. 101.32 pc (330.51 l.y.)
 
 
Coord 2000 21310-3633 Discov num B  1008 Comp AB Coord arcsec 2000 21 30 57.70 -36 32 49.7
Date first 1927 Date last 2021 Obs 32
Pa first 31 Pa last 205.9 P.A. Now (θ) 204.4°
Sep first 0.3 Sep last 0.082 Sep. Now (ρ) 0.093"
Mag pri 8.87 Mag sec 8.06 delta mag (ΔM) 0.81 Spectral class F3V (yellow-white)
Pri motion ra -014 Sec motion ra -014
Pri motion dec +024 Sec motion dec +024
Notes O (Orbital solution)
This double is physical.
 
 
21310-3633 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 213058 21 30 58 -36 32 50 B 1008 AB 2021 32 206 0.1 8.87 8.06 0.81 Y <===
Show 213058 21 30 58 -36 32 50 HJ 5275 AB,C 2020 7 200 40.4 7.69 11.30 3.61
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Grus SAO 213058 HIP 106224 Tycho2 7486-00774-1
Gaia DR2 6589186684899120896 HD 204635 GC 30115 CD CD-3714317
Distance 101.32 Distance ly 330.51
 
 
ORBITAL ELEMENTS
 
 
Period (P)74.2y Periastron (T)2020.43y Semi-major axis (a)0.228a
Eccentricity (e)0.58 Inclination (i)101.6° Longitude of periastron (ω)162.1°
Node (Ω)32.1° Notesn ReferenceTok2018b
Equinox2000 Last observation2017 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 29.7 0.300
2001 29.3 0.290
2002 28.8 0.280
2003 28.2 0.269
2004 27.6 0.257
2005 27.0 0.244
2006 26.2 0.230
2007 25.4 0.214
2008 24.4 0.198
2009 23.3 0.180
2010 21.8 0.161
2011 20.0 0.141
2012 17.6 0.119
2013 14.0 0.097
2014 8.1 0.073
2015 356.6 0.049
2016 327.4 0.030
2017 270.1 0.029
2018 237.9 0.047
2019 225.0 0.068
2020 218.1 0.086
2021 213.1 0.096
2022 208.8 0.098
2023 204.4 0.093
2024 199.1 0.083
2025 192.0 0.070
2026 181.5 0.056
2027 164.4 0.044
2028 138.1 0.037
2029 108.5 0.039
2030 86.8 0.049


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


 
  


wds21310-3633a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 21310-3633 B 1008 AB : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2018b orb j Tokovinin, A. 2018IAUDS.194....1T
Tok2018b Inf. Circ. 194, 1, 2018
 
 
DISCOVERER
 
 
idgroup discov author
1 B van den Bos, W.H.
212 HJ Herschel, J.F.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21310-3633 B 1008 AB 1992 18 33 0.3 8.87 8.06 F3V D 213057.70-363249.7
21310-3633 B 1008 AB 2008 20 23 0.2 8.87 8.06 F3V D 213057.70-363249.7
21310-3633 B 1008 AB 2010 21 22 0.2 8.87 8.06 F3V D 213057.70-363249.7
21310-3633 B 1008 AB 2013 23 10 0.1 8.87 8.06 F3V 213057.70-363249.7
21310-3633 B 1008 AB 2014 24 6 0.1 8.87 8.06 F3V 213057.70-363249.7
21310-3633 B 1008 AB 2015 26 338 0.0 8.87 8.06 F3V 213057.70-363249.7
21310-3633 B 1008 AB 2017 29 246 0.0 8.87 8.06 F3V O 213057.70-363249.7
21310-3633 B 1008 AB 2018 30 226 0.1 8.87 8.06 F3V O 213057.70-363249.7
21310-3633 B 1008 AB 2019 31 216 0.1 8.87 8.06 F3V O 213057.70-363249.7
21310-3633 B 1008 AB 2021 32 206 0.1 8.87 8.06 F3V O 213057.70-363249.7

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

 
 
WDS 21310-3633 B 1008 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21310-3633 B 1008 AB : MEASURES
 
 
No records found.

 
 
WDS 21310-3633 : VIRTUAL EYEPIECE
 
 

21310-3633 B 1008A mag 8.87 Sp F3V 21310-3633 B 1008B sep 0.1 P.A. 201.30 mag 8.06 21310-3633 HJ 5275C sep 39.5 P.A. 196.50 mag 11.3 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 21310-3633 : ALADIN DSS IMAGE @ 21h 30m 57.70s -36° 32' 49.7"
 
 
 
 
WDS 21310-3633 B 1008 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21310-3633 B 1008AB distance=1' 21310-3633 HJ 5275AB,C distance=1' 21318-3709 B 1896 distance=38' 21271-3700 BRT1820 distance=56' 21318-3538 KPP2207 distance=57' 21265-3608 NSN 468 distance=60' 21318-3534 B 1392 distance=60' 21265-3728 KPP 623 distance=78' 21370-3553 CBL 184 distance=83' 21377-3557 BRT1822 distance=89' 21380-3706 BRT1823 distance=92' 21232-3653 SUB 9 distance=96' 21347-3509 B 1393 distance=96' 21339-3806 B 2496 distance=101' 21263-3801 B 2494 distance=105' 21304-3448 HJ 5274 distance=105' 21236-3734 TDT2941 distance=108' 21225-3600 RST3284 distance=108' 21315-3834 I 1123AB distance=121' 21315-3834 TOK 347AC distance=121' 21251-3812 RST5478 distance=122' 21209-3639 B 1006 distance=122' 21406-3559 BRT1824 distance=122' 21247-3458 B 528 distance=122' 21224-3529 BRT1819 distance=123' 21220-3733 B 525 distance=124' 21307-3838 B 530AB distance=126' 21307-3838 B 530AC distance=126' 21360-3824 RST2180 distance=127' 21232-3800 LDS 741 distance=129' 21359-3829 WG 274 distance=131' 21276-3843 KPP1399 distance=137' 21419-3710 BVD 154 distance=137' 21399-3759 RST2184 distance=138' 21200-3557 UC 4443 distance=138' 21293-3850 I 133 distance=139' 21223-3500 HJ 5264 distance=141' 21418-3535 B 1010 distance=144' 21383-3827 RST2182 distance=144' 21221-3818 HDS3042 distance=149' 21393-3828 HJ 5283 distance=152' 21278-3900 WG 271 distance=152' 21434-3708 WIS 351 distance=154' 21427-3535 B 1011AB distance=155' 21427-3535 B 1011BC distance=155' 21285-3906 WG 272 distance=156' 21322-3357 B 1009 distance=157' 21425-3756 HJ 5288 distance=161' 21176-3619 UC 4431 distance=162' 21446-3632 SKF2808 distance=165' 21257-3913 SEE 445 distance=172' 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 21310-3633 B 1008 AB 206 0.1 1
Show 21310-3633 HJ 5275 AB,C 200 40.4 1
Show 21318-3709 B 1896 53 0.2 38
Show 21271-3700 BRT1820 99 4.0 56
Show 21318-3538 KPP2207 227 18.3 57
Show 21265-3608 NSN 468 163 2.6 60
Show 21318-3534 B 1392 102 0.5 60
Show 21265-3728 KPP 623 60 5.7 78
Show 21370-3553 CBL 184 265 78.4 83
Show 21377-3557 BRT1822 102 5.3 89
Show 21380-3706 BRT1823 268 3.0 92
Show 21232-3653 SUB 9 168 49.6 96
Show 21347-3509 B 1393 61 1.8 96
Show 21339-3806 B 2496 127 1.0 101
Show 21263-3801 B 2494 324 8.2 105
Show 21304-3448 HJ 5274 121 26.2 105
Show 21236-3734 TDT2941 97 0.4 108
Show 21225-3600 RST3284 180 0.6 108
Show 21315-3834 I 1123 AB 343 5.0 121
Show 21315-3834 TOK 347 AC 208 235.4 121
Show 21251-3812 RST5478 126 1.4 122
Show 21209-3639 B 1006 151 5.7 122
Show 21406-3559 BRT1824 5 3.0 122
Show 21247-3458 B 528 168 7.0 122
Show 21224-3529 BRT1819 78 3.3 123
Show 21220-3733 B 525 171 0.9 124
Show 21307-3838 B 530 AB 44 0.9 126
Show 21307-3838 B 530 AC 275 48.0 126
Show 21360-3824 RST2180 346 1.3 127
Show 21232-3800 LDS 741 290 8.9 129
Show 21359-3829 WG 274 197 9.1 131
Show 21276-3843 KPP1399 345 10.5 137
Show 21419-3710 BVD 154 100 31.9 137
Show 21399-3759 RST2184 56 0.7 138
Show 21200-3557 UC 4443 249 24.4 138
Show 21293-3850 I 133 26 7.2 139
Show 21223-3500 HJ 5264 47 16.3 141
Show 21418-3535 B 1010 328 4.3 144
Show 21383-3827 RST2182 100 0.8 144
Show 21221-3818 HDS3042 126 0.2 149
Show 21393-3828 HJ 5283 91 11.6 152
Show 21278-3900 WG 271 121 4.1 152
Show 21434-3708 WIS 351 70 359.5 154
Show 21427-3535 B 1011 AB 116 66.2 155
Show 21427-3535 B 1011 BC 238 1.4 155
Show 21285-3906 WG 272 85 7.5 156
Show 21322-3357 B 1009 59 6.7 157
Show 21425-3756 HJ 5288 60 19.7 161
Show 21176-3619 UC 4431 146 15.1 162
Show 21446-3632 SKF2808 111 2.9 165
Show 21257-3913 SEE 445 216 2.3 172

 
 
WDS 21310-3633 : COMPONENTS
 
 
  A B
B pa=201.3°
sep=0.08"
 
C pa=196.5°
sep=39.51"
pa=196.5°
sep=39.43"
 
 
21310-3633 A
 
 
Coord arcsec 2000 213057.70-363249.7 Mag 8.87 Spectral class F3V (yellow-white) PmRA -14.00
PmDE 24.0 SAO 213058 HIP 106224 HD 204635
GC 30115 CD CD-3714317
SAO
SAO 213058 DelFlag RA1950 PmRA1950 -0.0023
DE1950 PmDE1950 0.049 Vmag 7.6 SpType F2
Double code Source 70 CatNum 30115 DM CD-3714317
DMcomp BDsup HD 204635 M HD 0
GC 30115 RA1950rad 5.61948988 DE1950rad -0.64171553 PmRA2000 -0.0023
PmDE2000 0.046
Hipparcos
Catalog H HIP 106224 Proxy H RAhms 21 30 57.70
DEdms -36 32 49.7 Vmag 7.63 VarFlag R Vmag G
RAdeg 322.74 DEdeg -36.5471 AstroRef A Plx 9.66
CCDM 21310-3633 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AS
Theta 35 Rho 0.349 HD 204635 BD
CD CD-3714317 CP Dm number -3714317 VIred 0.44
SpType F3V R SpType Coord arcsec 2000 213057.70-363249.7
Hipparcos 2
HIP 106224 Sn 15 So 3 Nc 2
RArad 5.6328831856 DErad -0.6378678287 Plx 9.87 PmRA -15.42
PmDE 25.9 E RArad 0.85 E DErad 0.8 E Plx 0.99
E pmRA 1.07 E pmDE 0.77 Hpmag 7.7188 E Hpmag 0.002
SHp 0.011 VA 0 BV 0.38 E BV 0.017
VI 0.44
CCDM
Ccdm 21310-3633 RComp Comp A Note1
Note2 Discov num DRAs -2.21 DDEs 10.4
R dRAs 41 Year Theta Rho
Obs 3 Vmag 8.3 Sp F2 PmNote *
PmRA -17 PmDE 35 Dm number -3714317 Cat1 CD
Name2 213058 Cat2 SAO HD 204635 M HD
ADS BDS M ADS BDS N IDS IDS 21248S3659A
HIC 106224
 
 
21310-3633 B
 
 
Coord arcsec 2000 213057.70-363249.8 Mag 8.06 PmRA -14.00 PmDE 24.0
Tycho2 7486-00774-1 Calc delta mag 0.81 Calc coord yes
Tycho2
Tycho2 7486-00774-1 Pflag RAmdeg 322.74042474 DEmdeg -36.54704796
PmRA -13.6 PmDE 23.5 E RAmdeg 5 E DEmdeg 6
E pmRA 1.0 E pmDE 1.0 EpRAm 1991.27 EpDEm 1991.03
Num 17 Q RAmdeg 1.2 Q DEmdeg 1.3 Q pmRA 1.2
Q pmDE 1.4 BTmag 8.089 E BTmag 0.016 VTmag 7.690
E VTmag 0.012 Prox 999 TYC T HIP 106224
CCDM AS RAdeg 322.74046333 DEdeg -36.54710139 EpRA 1990 1.82
EpDE 1990 1.80 E RAdeg 5.3 E DEdeg 6.1 Posflg P
Corr 0.1
CCDM
Ccdm 21310-3633 RComp Comp B Note1
Note2 Discov num B 1008 DRAs DDEs
R dRAs Year 1952 Theta 331 Rho 0.1
Obs 8 Vmag 8.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 21248S3659B
HIC 106224
 
 
21310-3633 C
 
 
Coord arcsec 2000 213056.77-363327.6 Mag 11.3 PmRA -19.00 PmDE 25.0
Calc delta mag 2.43 Calc coord yes
CCDM
Ccdm 21310-3633 RComp Comp C Note1
Note2 Discov num HJ 5275 DRAs -3.42 DDEs -27.3
R dRAs 41 Year 1919 Theta 201 Rho 40.8
Obs 1 Vmag 11.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 21248S3659C
HIC