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Current system
21044+4631
HDS 3001


Nearby doubles
5' : 21046+4627
BRT1140

6' : 21044+4626
DAL 49

12' : 21032+4631
TDT2714

17' : 21037+4616
TDT2719

18' : 21051+4615
BRT1141

22' : 21037+4652
YSC 14

25' : 21022+4641
ES 1167AB

25' : 21067+4631
SMA 125AB

37' : 21008+4635
BU 156

40' : 21012+4609
STT 426AB

42' : 21083+4630
BRT1143

43' : 21070+4704
BRT1142

44' : 21028+4551
BU 1138AB

45' : 21068+4708
ES 1169

50' : 21088+4646
SMA 127

50' : 21091+4635
TDT2785

53' : 21046+4541
ES 1168

57' : 21098+4624
SMA 128

58' : 20597+4658
ES 1166

58' : 21077+4718
A 759

59' : 21062+4535
LDS2487

59' : 21067+4538
TDT2754

60' : 21100+4640
SMA 130

61' : 20585+4626
TDT2667

62' : 21099+4651
SMA 129

63' : 21102+4645
SKF2396



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

21044+4631 HDS 3001

 
 
21h 04m 21.21s +46° 31' 05.4" P.A. 94.00 sep 18.4 mag 9.33,10.74 Sp B8 dist. 108.34 pc (353.41 l.y.)
 
 
Coord 2000 21044+4631 Discov num HDS3001 Comp Coord arcsec 2000 21 04 21.21 +46 31 05.4
Date first 1892 Date last 2020 Obs 16
Pa first 95 Pa last 94 P.A. Now (θ) 94°
Sep first 17.9 Sep last 18.43 Sep. Now (ρ) 18.43"
Mag pri 9.33 Mag sec 10.74 delta mag (ΔM) 1.41 Spectral class B8 (blue-white)
Pri motion ra -003 Sec motion ra -001
Pri motion dec -004 Sec motion dec -002
Notes
rPM=0.566
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus HIP 104013 Tycho2 3588-09299-1 Gaia DR2 2163612525828400128
BD BD+45 3388 Distance 108.34 Distance ly 353.41
 
 
WDS 21044+4631 HDS 3001 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
HDS Hipparcos Double Star (from additional DD list) ...................
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21044+4631 HDS3001 2002 7 93 17.9 9.33 10.74 B8 D 210421.21+463105.4
21044+4631 HDS3001 2003 8 93 18.3 9.33 10.74 B8 D 210421.21+463105.4
21044+4631 HDS3001 2012 9 94 18.3 9.33 10.74 B8 D 210421.21+463105.4
21044+4631 HDS3001 2015 10 93 18.2 9.33 10.74 B8 210421.21+463105.4
21044+4631 HDS3001 2016 12 93 18.3 9.33 10.74 B8 210421.21+463105.4
21044+4631 HDS3001 2020 16 94 18.4 9.33 10.74 B8 210421.21+463105.4

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

 
 
WDS 21044+4631 HDS 3001 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21044+4631 HDS 3001 : MEASURES
 
 
No records found.

 
 
WDS 21044+4631 : VIRTUAL EYEPIECE
 
 

21044+4631 HDS3001A mag 9.33 Sp B8 21044+4631 HDS3001B sep 12.7 P.A. 95.80 mag 10.74 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 21044+4631 : ALADIN DSS IMAGE @ 21h 04m 21.21s +46° 31' 05.4"
 
 
 
 
WDS 21044+4631 HDS 3001 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21044+4631 HDS3001 distance=0' 21046+4627 BRT1140 distance=5' 21044+4626 DAL 49 distance=6' 21032+4631 TDT2714 distance=12' 21037+4616 TDT2719 distance=17' 21051+4615 BRT1141 distance=18' 21037+4652 YSC 14 distance=22' 21022+4641 ES 1167AB distance=25' 21022+4641 ES 1167AC distance=25' 21067+4631 SMA 125AB distance=25' 21067+4631 SMA 125AC distance=25' 21008+4635 BU 156 distance=37' 21012+4609 STT 426AB distance=40' 21012+4609 CIA 21Aa,Ab distance=40' 21083+4630 BRT1143 distance=42' 21028+4551 KUI 104CD distance=42' 21028+4551 FYM 331CF distance=42' 21028+4551 BU 1138CE distance=42' 21028+4551 HLA 30CG distance=42' 21070+4704 BRT1142 distance=43' 21028+4551 BU 1138AB distance=44' 21028+4551 BU 1138AC distance=44' 21068+4708 ES 1169 distance=45' 21088+4646 SMA 127 distance=50' 21091+4635 TDT2785 distance=50' 21046+4541 ES 1168 distance=53' 21098+4624 SMA 128 distance=57' 20597+4658 ES 1166 distance=58' 21077+4718 A 759 distance=58' 21062+4535 LDS2487 distance=59' 21067+4538 TDT2754 distance=59' 21100+4640 SMA 130 distance=60' 20585+4626 TDT2667 distance=61' 21099+4651 SMA 129 distance=62' 21102+4645 SKF2396 distance=63' 21016+4730 HDS2997 distance=66' 21090+4716 ES 512AB distance=66' 21102+4603 SMA 131 distance=68' 21009+4730 BU 1290AB distance=69' 21009+4730 BU 1290AC distance=69' 21009+4730 BU 1290BD distance=69' 21066+4739 ES 32 distance=72' 21010+4528 ES 1271 distance=72' 21109+4658 GIC 166AB distance=73' 21109+4658 JNN 290BC distance=74' 21109+4658 JNN 290BD distance=74' 21011+4738 RAO 446 distance=75' 20571+4632 TDT2653 distance=75' 21105+4713 TDT2803 distance=76' 20598+4731 MCA 65Aa,Ab distance=76' 20598+4731 STF2743AB distance=76' 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 21044+4631 HDS3001 94 18.4
Show 21046+4627 BRT1140 207 4.6 5
Show 21044+4626 DAL 49 147 12.1 6
Show 21032+4631 TDT2714 22 0.5 12
Show 21037+4616 TDT2719 220 2.0 17
Show 21051+4615 BRT1141 108 5.8 18
Show 21037+4652 YSC 14 182 0.1 22
Show 21022+4641 ES 1167 AB 226 5.2 25
Show 21022+4641 ES 1167 AC 73 18.8 25
Show 21067+4631 SMA 125 AB 87 22.2 25
Show 21067+4631 SMA 125 AC 198 15.0 25
Show 21008+4635 BU 156 235 0.9 37
Show 21012+4609 STT 426 AB 159 2.9 40
Show 21012+4609 CIA 21 Aa,Ab 30 0.0 40
Show 21083+4630 BRT1143 212 2.7 42
Show 21028+4551 KUI 104 CD 85 2.7 42
Show 21028+4551 FYM 331 CF 39 11.9 42
Show 21028+4551 BU 1138 CE 249 23.6 42
Show 21028+4551 HLA 30 CG 148 7.3 42
Show 21070+4704 BRT1142 220 4.6 43
Show 21028+4551 BU 1138 AB 172 0.1 44
Show 21028+4551 BU 1138 AC 330 152.1 44
Show 21068+4708 ES 1169 89 4.8 45
Show 21088+4646 SMA 127 130 17.3 50
Show 21091+4635 TDT2785 68 2.6 50
Show 21046+4541 ES 1168 118 1.4 53
Show 21098+4624 SMA 128 170 12.3 57
Show 20597+4658 ES 1166 114 1.6 58
Show 21077+4718 A 759 24 4.1 58
Show 21062+4535 LDS2487 271 5.2 59
Show 21067+4538 TDT2754 233 0.5 59
Show 21100+4640 SMA 130 147 8.7 60
Show 20585+4626 TDT2667 17 1.1 61
Show 21099+4651 SMA 129 264 14.1 62
Show 21102+4645 SKF2396 53 13.3 63
Show 21016+4730 HDS2997 232 1.9 66
Show 21090+4716 ES 512 AB 1 13.4 66
Show 21102+4603 SMA 131 86 8.6 68
Show 21009+4730 BU 1290 AB 35 9.3 69
Show 21009+4730 BU 1290 AC 266 3.5 69
Show 21009+4730 BU 1290 BD 22 2.5 69
Show 21066+4739 ES 32 159 15.7 72
Show 21010+4528 ES 1271 26 3.1 72
Show 21109+4658 GIC 166 AB 150 29.3 73
Show 21109+4658 JNN 290 BC 36 2.4 74
Show 21109+4658 JNN 290 BD 189 3.4 74
Show 21011+4738 RAO 446 338 1.7 75
Show 20571+4632 TDT2653 301 2.3 75
Show 21105+4713 TDT2803 183 0.6 76
Show 20598+4731 MCA 65 Aa,Ab 334 0.1 76
Show 20598+4731 STF2743 AB 353 21.0 76

 
 
WDS 21044+4631 : COMPONENTS
 
 
  A
B pa=95.8°
sep=12.72"
 
 
21044+4631 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 210421.21+463105.4 Mag 9.33 Spectral class B8 (blue-white)
PmRA -3.00 PmDE -4.0 HIP 104013 Tycho2 3588-09299-1
BD BD+45 3388
Tycho2
Tycho2 3588-09299-1 Pflag RAmdeg 316.08837881 DEmdeg 46.51817780
PmRA -1.5 PmDE -2.4 E RAmdeg 10 E DEmdeg 9
E pmRA 1.2 E pmDE 1.2 EpRAm 1990.76 EpDEm 1990.98
Num 7 Q RAmdeg 0.9 Q DEmdeg 1.1 Q pmRA 0.8
Q pmDE 1.1 BTmag 9.335 E BTmag 0.018 VTmag 9.330
E VTmag 0.018 Prox 183 TYC T HIP 104013
CCDM A RAdeg 316.08838389 DEdeg 46.51818306 EpRA 1990 1.70
EpDE 1990 1.73 E RAdeg 9.5 E DEdeg 9.3 Posflg
Corr -0.1
Hipparcos
Catalog H HIP 104013 Proxy RAhms 21 04 21.21
DEdms +46 31 05.5 Vmag 9.34 VarFlag R Vmag G
RAdeg 316.088 DEdeg 46.5182 AstroRef A Plx -0.26
CCDM 21044+4631 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source Qual B M HIP AB
Theta 93 Rho 18.252 HD BD BD+45 3388
CD CP Dm number +45 3388 VIred 0.08
SpType B8 R SpType Coord arcsec 2000 210421.21+463105.5
Hipparcos 2
HIP 104013 Sn 15 So 3 Nc 2
RArad 5.516783154 DErad 0.8118954789 Plx -9.23 PmRA -3.3
PmDE 5.98 E RArad 3.32 E DErad 3.47 E Plx 4.31
E pmRA 3.61 E pmDE 3.75 Hpmag 9.3357 E Hpmag 0.0291
SHp 0.08 VA 0 BV 0.07 E BV 0.015
VI 0.08
CCDM
Ccdm 21044+4631 RComp Comp A Note1
Note2 Discov num DRAs -2.79 DDEs 5.4
R dRAs 82 Year Theta Rho
Obs 2 Vmag 9.3 Sp B8 PmNote *
PmRA -4 PmDE -5 Dm number +45 3388 Cat1 BD
Name2 +46 1756 Cat2 AGK2/3 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 104013
 
 
21044+4631 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 210422.44+463104.1 Mag 10.74 PmRA -1.00
PmDE -2.0 Tycho2 3588-08651-1 Calc delta mag 1.41 Calc coord yes
Tycho2
Tycho2 3588-08651-1 Pflag RAmdeg 316.09574054 DEmdeg 46.51786013
PmRA 1.0 PmDE -1.2 E RAmdeg 30 E DEmdeg 26
E pmRA 1.6 E pmDE 1.6 EpRAm 1987.71 EpDEm 1988.91
Num 3 Q RAmdeg 0.3 Q DEmdeg 1.7 Q pmRA 0.2
Q pmDE 1.6 BTmag 10.711 E BTmag 0.040 VTmag 10.737
E VTmag 0.056 Prox 183 TYC T HIP 104013
CCDM B RAdeg 316.09573722 DEdeg 46.51786306 EpRA 1990 1.64
EpDE 1990 1.77 E RAdeg 31.4 E DEdeg 26.3 Posflg
Corr -0.1
CCDM
Ccdm 21044+4631 RComp Comp B Note1
Note2 Discov num HDS DRAs -1.02 DDEs 4.3
R dRAs 82 Year 1991 Theta 94 Rho 18.3
Obs 1 Vmag 10.6 Sp PmNote *
PmRA -4 PmDE -5 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 104013