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Doubles in session


Current system
21268+3731
SEI 1516 AB
HD 204324


Nearby doubles
20' : 21278+3715
SEI1518

20' : 21264+3712
SEI1514

22' : 21272+3752
ES 2520

24' : 21284+3745
TDT2983

31' : 21252+3708
SEI1513

31' : 21249+3711
TDS1126

32' : 21243+3740
WSI 7

33' : 21295+3728
SEI1519

33' : 21287+3755
KPP1064

33' : 21241+3741
SEI1458

37' : 21238+3721
STFA 55AB

49' : 21250+3814
TDT2950

50' : 21233+3801
ES 2519

52' : 21226+3744
COU1820

53' : 21228+3754
WIS 349

53' : 21258+3640
S 790AB

53' : 21305+3701
SEI1521AB

55' : 21283+3640
CRB 142

56' : 21257+3824
TDT2955

56' : 21221+3734
ES 2517

57' : 21233+3810
ALI 690

59' : 21285+3636
ALI 443

59' : 21317+3730
GRV 474

60' : 21294+3640
CRB 16

62' : 21231+3647
ES 2124

63' : 21295+3635
ES 2128AB



Selections
Full WDS
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Binary Systems
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Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21268+3731 SEI 1516 AB (HD 204324)

 
 
21h 26m 47.68s +37° 31' 03.7" P.A. 335.00 sep 3.9 mag 7.91,9.60 Sp K0 dist. 314.47 pc (1025.8 l.y.)
 
 
Coord 2000 21268+3731 Discov num SEI1516 Comp AB Coord arcsec 2000 21 26 47.68 +37 31 03.7
Date first 1895 Date last 1895 Obs 1
Pa first 335 Pa last 335.4 P.A. Now (θ) 335.4°
Sep first 3.9 Sep last 3.938 Sep. Now (ρ) 3.938"
Mag pri 7.91 Mag sec 9.60 delta mag (ΔM) 1.69 Spectral class K0 (yellow-orange)
Pri motion ra -007 Sec motion ra
Pri motion dec -064 Sec motion dec
Notes X (Dubious double)
Nature of this double is uncertain.
 
 
21268+3731 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 204324 71348 21 26 48 +37 31 04 SEI 1516 AB 1895 1 335 3.9 7.91 9.60 1.69 <===
Show 71348 21 26 48 +37 31 04 HEI 9004 AC 2024 7 275 25.5 8.91 12.75 3.84
Show 71348 21 26 48 +37 31 04 HEI 9004 AD 2024 7 335 110.2 7.91 9.73 1.82
Show 21 26 44 +37 32 42 COU 1821 Da,Db 2014 7 96 0.7 10.37 10.39 0.02
Quintuple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 204324 Constellation Cygnus SAO 71348 HIP 105894
Tycho2 3182-00970-1 Gaia DR2 1963780444991070592 HD 204324 BD BD+36 4564
Distance 314.47 Distance ly 1025.8
 
 
WDS 21268+3731 SEI 1516 AB (HD 204324) : NOTES
 
 
No records found.

 
 
DISCOVERER
 
 
discov author
COU Couteau, P.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
21268+3731 SEI1516 AB 1895 1 335 3.9 7.80 9.60 K0 +36 4564 212647.68+373103.7
21268+3731 SEI1516 AB 2011 2 96 0.6 7.91 9.60 K0 +36 4564 212647.68+373103.7

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

 
 
WDS 21268+3731 SEI 1516 AB (HD 204324) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21268+3731 SEI 1516 AB (HD 204324) : MEASURES
 
 
No records found.

 
 
WDS 21268+3731 (HD 204324) : VIRTUAL EYEPIECE
 
 

21268+3731 SEI1516A mag 7.91 Sp K0 21268+3731 SEI1516B sep 3.9 P.A. 335.40 mag 9.6 21268+3731 HEI9004C sep 25.5 P.A. 275.40 mag 12.75 21268+3731 COU1821D sep 109.3 P.A. 334.50 mag 10.37 21268+3731 COU1821Db sep 109.0 P.A. 334.80 mag 10.39 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 21268+3731 (HD 204324) : ALADIN DSS IMAGE @ 21h 26m 47.68s +37° 31' 03.7"
 
 
 
 
WDS 21268+3731 SEI 1516 AB (HD 204324) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21268+3731 SEI1516AB distance=0' 21268+3731 COU1821Da,Db distance=2' 21278+3715 SEI1518 distance=20' 21264+3712 SEI1514 distance=20' 21272+3752 ES 2520 distance=22' 21284+3745 TDT2983 distance=24' 21252+3708 SEI1513 distance=31' 21249+3711 TDS1126 distance=31' 21243+3740 WSI 7 distance=32' 21295+3728 SEI1519 distance=33' 21287+3755 KPP1064 distance=33' 21241+3741 SEI1458 distance=33' 21238+3721 STFA 55CD distance=37' 21238+3721 STFA 55CE distance=37' 21238+3721 STFA 55AB distance=37' 21238+3721 STFA 55AC distance=37' 21238+3721 STFA 55AF distance=37' 21250+3814 TDT2950 distance=49' 21233+3801 ES 2519 distance=50' 21226+3744 COU1820 distance=52' 21258+3640 FYM 124CD distance=53' 21228+3754 WIS 349 distance=53' 21258+3640 S 790AB distance=53' 21258+3640 S 790AC distance=53' 21305+3701 SEI1521AB distance=53' 21305+3701 GII 102Aa,Ab distance=53' 21283+3640 CRB 142 distance=55' 21257+3824 TDT2955 distance=56' 21221+3734 ES 2517 distance=56' 21233+3810 ALI 690 distance=57' 21285+3636 ALI 443 distance=59' 21317+3730 GRV 474 distance=59' 21294+3640 CRB 16 distance=60' 21231+3647 ES 2124 distance=62' 21295+3635 ES 2128AB distance=63' 21295+3635 ES 2128AC distance=63' 21215+3719 ROE 24AB distance=64' 21215+3719 ROE 24AD distance=64' 21215+3719 ROE 24AC distance=64' 21271+3627 SEI1517 distance=65' 21311+3652 HJ 1653 distance=65' 21278+3835 KU 61AB distance=65' 21278+3835 KU 61AC distance=65' 21278+3835 KU 61AD distance=65' 21215+3719 ROE 23CD distance=65' 21252+3629 CBL 93 distance=66' 21247+3631 ES 2126AB distance=66' 21247+3631 WSI 23AC distance=66' 21231+3821 ALI 689 distance=66' 21245+3632 ES 2125AB distance=66' 21245+3632 SEI1512AC distance=66' 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 21268+3731 SEI1516 AB 335 3.9 0
Show 21268+3731 HEI9004 AC 275 25.5 0
Show 21268+3731 HEI9004 AD 335 110.2 0
Show 21268+3731 COU1821 Da,Db 96 0.7 2
Show 21278+3715 SEI1518 143 15.5 20
Show 21264+3712 SEI1514 184 12.0 20
Show 21272+3752 ES 2520 238 6.2 22
Show 21284+3745 TDT2983 111 0.5 24
Show 21252+3708 SEI1513 90 14.5 31
Show 21249+3711 TDS1126 314 1.9 31
Show 21243+3740 WSI 7 44 0.1 32
Show 21295+3728 SEI1519 181 13.8 33
Show 21287+3755 KPP1064 246 8.5 33
Show 21241+3741 SEI1458 312 7.9 33
Show 21238+3721 STFA 55 CD 183 12.8 37
Show 21238+3721 STFA 55 CE 320 17.7 37
Show 21238+3721 STFA 55 AB 304 364.1 37
Show 21238+3721 STFA 55 AC 154 178.3 37
Show 21238+3721 STFA 55 AF 201 22.8 37
Show 21250+3814 TDT2950 200 1.6 49
Show 21233+3801 ES 2519 224 6.5 50
Show 21226+3744 COU1820 319 1.4 52
Show 21258+3640 FYM 124 CD 84 19.4 53
Show 21228+3754 WIS 349 176 44.9 53
Show 21258+3640 S 790 AB 28 34.5 53
Show 21258+3640 S 790 AC 99 53.1 53
Show 21305+3701 SEI1521 AB 226 2.9 53
Show 21305+3701 GII 102 Aa,Ab 302 0.4 53
Show 21283+3640 CRB 142 46 25.7 55
Show 21257+3824 TDT2955 18 0.5 56
Show 21221+3734 ES 2517 115 5.3 56
Show 21233+3810 ALI 690 65 8.8 57
Show 21285+3636 ALI 443 298 4.3 59
Show 21317+3730 GRV 474 236 24.6 59
Show 21294+3640 CRB 16 56 111.6 60
Show 21231+3647 ES 2124 263 7.6 62
Show 21295+3635 ES 2128 AB 304 7.2 63
Show 21295+3635 ES 2128 AC 101 24.9 63
Show 21215+3719 ROE 24 AB 168 10.3 64
Show 21215+3719 ROE 24 AD 266 81.7 64
Show 21215+3719 ROE 24 AC 266 68.7 64
Show 21271+3627 SEI1517 80 16.3 65
Show 21311+3652 HJ 1653 195 19.5 65
Show 21278+3835 KU 61 AB 271 3.9 65
Show 21278+3835 KU 61 AC 206 14.3 65
Show 21278+3835 KU 61 AD 235 25.7 65
Show 21215+3719 ROE 23 CD 261 13.1 65
Show 21252+3629 CBL 93 56 12.9 66
Show 21247+3631 ES 2126 AB 170 4.1 66
Show 21247+3631 WSI 23 AC 84 9.0 66
Show 21231+3821 ALI 689 107 14.6 66

 
 
WDS 21268+3731 : COMPONENTS
 
 
  A B C D
B pa=335.4°
sep=3.94"
 
C pa=275.4°
sep=25.54"
pa=267.2°
sep=23.82"
 
D pa=334.5°
sep=109.31"
pa=334.5°
sep=105.38"
pa=347.4°
sep=98.68"
 
Db pa=334.8°
sep=108.97"
pa=334.8°
sep=105.03"
pa=347.7°
sep=98.47"
pa=96.0°
sep=0.66"
 
 
21268+3731 A
 
 
Name HD 204324 Coord arcsec 2000 212647.68+373103.7 Mag 7.91 Spectral class K0 (yellow-orange)
PmRA -7.00 PmDE -64.0 SAO 71348 HIP 105894
Tycho2 3182-00970-1 HD 204324 BD BD+36 4564
Tycho2
Tycho2 3182-00970-1 Pflag RAmdeg 321.69864257 DEmdeg 37.51763725
PmRA -1.4 PmDE -21.4 E RAmdeg 5 E DEmdeg 5
E pmRA 0.9 E pmDE 0.9 EpRAm 1990.98 EpDEm 1991.16
Num 14 Q RAmdeg 0.8 Q DEmdeg 1.2 Q pmRA 0.8
Q pmDE 1.2 BTmag 9.642 E BTmag 0.018 VTmag 7.911
E VTmag 0.010 Prox 999 TYC T HIP 105894
CCDM RAdeg 321.69864722 DEdeg 37.51768667 EpRA 1990 1.60
EpDE 1990 1.67 E RAdeg 5.0 E DEdeg 4.8 Posflg
Corr 0.1
SAO
SAO 71348 DelFlag RA1950 PmRA1950 -0.0013
DE1950 PmDE1950 -0.008 Vmag 7.6 SpType K0
Double code Source 5 CatNum 2119 DM BD+36 4564
DMcomp BDsup HD 204324 M HD 0
GC RA1950rad 5.60582918 DE1950rad 0.65101475 PmRA2000 -0.0011
PmDE2000 -0.011
Hipparcos
Catalog H HIP 105894 Proxy RAhms 21 26 47.68
DEdms +37 31 03.7 Vmag 7.76 VarFlag R Vmag H
RAdeg 321.699 DEdeg 37.5177 AstroRef Plx 2.96
CCDM -0.83 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 204324 BD BD+36 4564
CD CP Dm number +36 4564 VIred 1.38
SpType K0 R SpType Coord arcsec 2000 212647.68+373103.7
Hipparcos 2
HIP 105894 Sn 5 So 0 Nc 1
RArad 5.6147006006 DErad 0.6548071726 Plx 3.18 PmRA -0.42
PmDE -22.35 E RArad 0.34 E DErad 0.4 E Plx 0.62
E pmRA 0.39 E pmDE 0.48 Hpmag E Hpmag 0.0013
SHp 0.013 VA 0 BV 1.447 E BV 0.017
VI 1.45
CCDM
Ccdm 21268+3731 RComp Comp A Note1
Note2 Discov num DRAs -0.32 DDEs 3.3
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.1 Sp K0 PmNote *
PmRA -1 PmDE -21 Dm number +36 4564 Cat1 BD
Name2 71348 Cat2 SAO HD 204324 M HD
ADS BDS A14990 M ADS BDS N IDS IDS 21227N3705A
HIC 105894
 
 
21268+3731 B
 
 
Coord arcsec 2000 212647.54+373107.3 Mag 9.6 Delta magnitude 1.69 Coordinate calculated yes
CCDM
Ccdm 21268+3731 RComp Comp B Note1
Note2 Discov num SEI1516 DRAs DDEs
R dRAs Year 1895 Theta 339 Rho 4.1
Obs 1 Vmag 9.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14990 M ADS BDS N IDS IDS 21227N3705B
HIC 105894
 
 
21268+3731 C
 
 
Coord arcsec 2000 212645.54+373106.1 Mag 12.75 PmRA -4.00 PmDE -13.0
Delta magnitude 4.84 Coordinate calculated yes
 
 
21268+3731 D
 
 
Coord arcsec 2000 212643.73+373242.4 Coord calc 212643.78+373243.6 Mag 10.37 Composed magnitude 9.73
PmRA 9.00 PmDE 2.0 Delta magnitude 2.46
 
 
21268+3731 Db
 
 
Coord arcsec 2000 212643.79+373242.3 Mag 10.39 PmRA 9.00 PmDE 2.0
Delta magnitude 2.48 Coordinate calculated yes