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Doubles in session


Current system
21209+4127
HO 156
HD 203426


Nearby doubles
27' : 21193+4108
TDT2901

32' : 21192+4102
HO 602

32' : 21183+4140
COU2302AB

33' : 21189+4102
HO 601AB

35' : 21217+4053
ES 1691

36' : 21235+4147
TDT2939

40' : 21219+4049
GRV 456

40' : 21208+4206
GRV 453

42' : 21195+4048
TDT2903

43' : 21202+4207
ES 1584

47' : 21250+4122
ES 1692

47' : 21169+4140
POP 186AB

49' : 21206+4215
LDS2511AB

49' : 21248+4106
COU2305

52' : 21163+4129
ES 1688

53' : 21206+4219
WSI 16

54' : 21164+4110
ES 1689

54' : 21256+4138
A 618

57' : 21228+4031
HO 287

58' : 21171+4206
TDT2883

59' : 21157+4135
POP 170

60' : 21260+4112
HDS3052

60' : 21161+4101
COU2229

60' : 21260+4144
BLL 54

64' : 21192+4026
LDS2508AB

64' : 21197+4228
ES 1583AB



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.

21209+4127 HO 156 (HD 203426)

 
 
21h 20m 53.71s +41° 26' 31.4" P.A. 50.00 sep 2.2 mag 7.69,11.29 Sp G5 dist. 505.05 pc (1647.47 l.y.)
 
 
Coord 2000 21209+4127 Discov num HO  156 Comp Coord arcsec 2000 21 20 53.71 +41 26 31.4
Date first 1885 Date last 1991 Obs 10
Pa first 45 Pa last 50 P.A. Now (θ) 50°
Sep first 1.7 Sep last 2.18 Sep. Now (ρ) 2.18"
Mag pri 7.69 Mag sec 11.29 delta mag (ΔM) 3.6 Spectral class G5 (yellow)
Pri motion ra -014 Sec motion ra -012
Pri motion dec -021 Sec motion dec -021
Notes
rPM=0.079 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 203426 Constellation Cygnus SAO 50736 HIP 105397
Tycho2 3190-00075-1 Gaia DR2 1968788754818309248 HD 203426 BD BD+40 4496
Distance 505.05 Distance ly 1647.47
 
 
WDS 21209+4127 HO 156 (HD 203426) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Ho_1883 Ma j Hough, G.W. 1883MNRAS..43..371H
Ho_1883 MNRAS 43, 371, 1883 (data also in Ho_1890) 1890AN....125....1H
Ho_1884 Ma j Hough, G.W. 1884MNRAS..44..365H
Ho_1884 MNRAS 44, 365, 1884 (data also in Ho_1890) 1890AN....125....1H
Ho_1885 Ma j Hough, G.W. 1885MNRAS..45..417H
Ho_1885 MNRAS 45, 417, 1885 (data also in Ho_1890) 1890AN....125....1H
Ho_1886 Ma j Hough, G.W. 1886MNRAS..46..393H
Ho_1886 MNRAS 46, 393, 1886 (data also in Ho_1890) 1890AN....125....1H
Ho_1887 Ma j Hough, G.W. 1887AN....116..273H
Ho_1887 AN 116, 273, 1887
Ho_1890 Ma j Hough, G.W. 1890AN....125....1H
Ho_1890 AN 125, 1, 1890
Ho_1890b Ma j Hough, G.W. 1890AJ......9..177H
Ho_1890b AJ 9, 177, 1890 (some data also in Ho_1890 or Ho_1894b) 1890AN....125....1H
Ho_1894a Ma - Hough, G.W. 1894MNRAS..54..251H
Ho_1894a MNRAS 54, 251, 1894
Ho_1894b Ma j Hough, G.W. (HO 304 - 490) 1894AN....135..281H
Ho_1894b AN 135, 281, 1894
Ho_1894c Ma - Hough, G.W. (measure by Dembowski, H.) 1894AN....135..281H
Ho_1894c AN 135, 281, 1894
Ho_1899a Ma j Hough, G.W. 1899AN....149..65H
Ho_1899a AN 149, 65, 1899
Ho_1899b Ma - Hough, G.W. (measure by Burnham, S.W.) 1899AN....149..65H
Ho_1899b AN 149, 65, 1899
Ho_1907 Ma - Hough, G.W. 1907PFAO....3c...1D
Ho_1907 Pub. Univ. Penn. 3, Pt. 3, 1907 (measures sent to Doolittle)
Ho_1932A Ma - Hough, G.W. 1932QB821.A43......
Ho_1932A cited in ADS, 1932 (unpublished measures sent to Aitken in manuscript by Fox)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21209+4127 HO 156 1991 10 50 2.2 7.69 11.29 G5 D 212053.71+412631.4

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

 
 
WDS 21209+4127 HO 156 (HD 203426) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21209+4127 HO 156 (HD 203426) : MEASURES
 
 
No records found.

 
 
WDS 21209+4127 (HD 203426) : VIRTUAL EYEPIECE
 
 

21209+4127 HO 156A mag 7.69 Sp G5 21209+4127 HO 156B sep 1.9 P.A. 41.80 mag 11.29 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 21209+4127 (HD 203426) : ALADIN DSS IMAGE @ 21h 20m 53.71s +41° 26' 31.4"
 
 
 
 
WDS 21209+4127 HO 156 (HD 203426) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21209+4127 HO 156 distance=0' 21193+4108 TDT2901 distance=27' 21192+4102 HO 602 distance=32' 21183+4140 COU2302AB distance=32' 21183+4140 GII 30AB,C distance=32' 21189+4102 HO 601AB distance=33' 21189+4102 HO 601AC distance=33' 21217+4053 ES 1691 distance=35' 21235+4147 TDT2939 distance=36' 21219+4049 GRV 456 distance=40' 21208+4206 GRV 453 distance=40' 21195+4048 TDT2903 distance=42' 21202+4207 ES 1584 distance=43' 21169+4140 POP 186CD distance=46' 21250+4122 ES 1692 distance=47' 21169+4140 POP 186AB distance=47' 21169+4140 POP 186AC distance=47' 21206+4215 LDS2511AB distance=49' 21206+4215 LDS2511AC distance=49' 21248+4106 COU2305 distance=49' 21163+4129 ES 1688 distance=52' 21206+4219 WSI 16 distance=53' 21164+4110 ES 1689 distance=54' 21256+4138 A 618 distance=54' 21228+4031 HO 287 distance=57' 21171+4206 TDT2883 distance=58' 21157+4135 POP 170 distance=59' 21260+4112 HDS3052 distance=60' 21161+4101 COU2229 distance=60' 21260+4144 BLL 54 distance=60' 21192+4026 LDS2508AB distance=64' 21197+4228 ES 1583BC distance=64' 21197+4228 ES 1583AB distance=64' 21197+4228 ABH 144AD distance=64' 21197+4228 ABH 144AE distance=64' 21197+4228 ABH 144AF distance=64' 21197+4228 ABH 144AG distance=64' 21197+4228 ABH 144AH distance=64' 21197+4228 ABH 144AI distance=64' 21197+4228 ABH 144AJ distance=64' 21197+4228 ABH 144AK distance=64' 21197+4228 ES 1583AC distance=64' 21165+4046 ES 1690 distance=65' 21261+4203 COU2307 distance=70' 21257+4043 COU2306 distance=70' 21213+4235 LDS2513 distance=70' 21204+4017 RAO 451 distance=70' 21155+4202 HJL1106 distance=71' 21155+4205 TDT2861 distance=72' 21147+4143 POP1231 distance=72' 21144+4124 LDS2499 distance=74' 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 21209+4127 HO 156 50 2.2
Show 21193+4108 TDT2901 306 0.5 27
Show 21192+4102 HO 602 27 4.2 32
Show 21183+4140 COU2302 AB 63 1.3 32
Show 21183+4140 GII 30 AB,C 187 14.1 32
Show 21189+4102 HO 601 AB 176 17.1 33
Show 21189+4102 HO 601 AC 82 56.7 33
Show 21217+4053 ES 1691 174 5.3 35
Show 21235+4147 TDT2939 174 0.4 36
Show 21219+4049 GRV 456 56 36.5 40
Show 21208+4206 GRV 453 27 66.2 40
Show 21195+4048 TDT2903 9 0.4 42
Show 21202+4207 ES 1584 116 5.4 43
Show 21169+4140 POP 186 CD 93 4.2 46
Show 21250+4122 ES 1692 313 3.8 47
Show 21169+4140 POP 186 AB 297 10.7 47
Show 21169+4140 POP 186 AC 130 60.7 47
Show 21206+4215 LDS2511 AB 40 3.0 49
Show 21206+4215 LDS2511 AC 197 19.7 49
Show 21248+4106 COU2305 101 0.3 49
Show 21163+4129 ES 1688 147 5.3 52
Show 21206+4219 WSI 16 149 8.2 53
Show 21164+4110 ES 1689 136 3.3 54
Show 21256+4138 A 618 276 0.6 54
Show 21228+4031 HO 287 6 2.7 57
Show 21171+4206 TDT2883 112 0.9 58
Show 21157+4135 POP 170 75 1.4 59
Show 21260+4112 HDS3052 260 0.2 60
Show 21161+4101 COU2229 278 0.8 60
Show 21260+4144 BLL 54 296 80.7 60
Show 21192+4026 LDS2508 AB 357 7.8 64
Show 21197+4228 ES 1583 BC 77 6.0 64
Show 21197+4228 ES 1583 AB 238 13.0 64
Show 21197+4228 ABH 144 AD 112 64.4 64
Show 21197+4228 ABH 144 AE 219 27.2 64
Show 21197+4228 ABH 144 AF 245 62.8 64
Show 21197+4228 ABH 144 AG 238 82.9 64
Show 21197+4228 ABH 144 AH 22 41.7 64
Show 21197+4228 ABH 144 AI 117 69.6 64
Show 21197+4228 ABH 144 AJ 112 81.2 64
Show 21197+4228 ABH 144 AK 98 101.4 64
Show 21197+4228 ES 1583 AC 223 7.6 64
Show 21165+4046 ES 1690 101 3.8 65
Show 21261+4203 COU2307 21 1.2 70
Show 21257+4043 COU2306 18 0.7 70
Show 21213+4235 LDS2513 246 7.1 70
Show 21204+4017 RAO 451 116 2.8 70
Show 21155+4202 HJL1106 183 459.8 71
Show 21155+4205 TDT2861 287 2.4 72
Show 21147+4143 POP1231 269 54.6 72
Show 21144+4124 LDS2499 320 6.2 74

 
 
WDS 21209+4127 : COMPONENTS
 
 
  A
B pa=41.8°
sep=1.88"
 
 
21209+4127 A
 
 
Componente originario normalizzato AB Name HD 203426 Coord arcsec 2000 212053.71+412631.4 Mag 7.69
Spectral class G5 (yellow) PmRA -14.00 PmDE -21.0 SAO 50736
HIP 105397 Tycho2 3190-00075-1 HD 203426 BD BD+40 4496
Tycho2
Tycho2 3190-00075-1 Pflag RAmdeg 320.22377527 DEmdeg 41.44206797
PmRA -14.4 PmDE -21.4 E RAmdeg 5 E DEmdeg 5
E pmRA 0.9 E pmDE 0.9 EpRAm 1991.15 EpDEm 1991.26
Num 10 Q RAmdeg 1.6 Q DEmdeg 1.0 Q pmRA 1.6
Q pmDE 1.0 BTmag 8.875 E BTmag 0.016 VTmag 7.689
E VTmag 0.010 Prox 22 TYC T HIP 105397
CCDM A RAdeg 320.22381944 DEdeg 41.44211750 EpRA 1990 1.59
EpDE 1990 1.64 E RAdeg 4.8 E DEdeg 4.7 Posflg
Corr 0.1
SAO
SAO 50736 DelFlag RA1950 PmRA1950 0.0009
DE1950 PmDE1950 -0.008 Vmag 7.6 SpType G5
Double code Source 4 CatNum 2043 DM BD+40 4496
DMcomp BDsup HD 203426 M HD 0
GC RA1950rad 5.58053255 DE1950rad 0.7195877 PmRA2000 0.0012
PmDE2000 -0.011
Hipparcos
Catalog H HIP 105397 Proxy H RAhms 21 20 53.72
DEdms +41 26 31.6 Vmag 7.65 VarFlag R Vmag G
RAdeg 320.224 DEdeg 41.4421 AstroRef A Plx 1.66
CCDM 21209+4127 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 50 Rho 2.176 HD 203426 BD BD+40 4496
CD CP Dm number +40 4496 VIred 0.99
SpType G5 R SpType Coord arcsec 2000 212053.72+412631.6
Hipparcos 2
HIP 105397 Sn 15 So 3 Nc 2
RArad 5.5889600492 DErad 0.7233014349 Plx 1.98 PmRA -12.04
PmDE -20.02 E RArad 0.47 E DErad 0.55 E Plx 0.73
E pmRA 0.54 E pmDE 0.6 Hpmag 7.7153 E Hpmag 0.0015
SHp 0.014 VA 0 BV 0.713 E BV 0.126
VI 0.99
CCDM
Ccdm 21209+4127 RComp Comp A Note1
Note2 Discov num DRAs -0.20 DDEs -28.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.8 Sp G5 PmNote *
PmRA 2 PmDE -14 Dm number +40 4496 Cat1 BD
Name2 +41 2043 Cat2 AGK2/3 HD 203426 M HD
ADS BDS A14896 M ADS BDS N IDS IDS 21170N4101A
HIC 105397
 
 
21209+4127 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 212053.82+412632.8 Mag 11.29 PmRA -12.00
PmDE -21.0 Calc delta mag 3.6 Calc coord yes
CCDM
Ccdm 21209+4127 RComp Comp B Note1
Note2 Discov num HO 156 DRAs DDEs
R dRAs Year 1923 Theta 050 Rho 2.3
Obs 5 Vmag 12.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14896 M ADS BDS N IDS IDS 21170N4101B
HIC 105397