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Doubles in session


Current system
21105+4742
BU 159 AB
HD 201836


Nearby doubles
7' : 21100+4745
A 761

15' : 21092+4737
TDT2786

29' : 21105+4713
TDT2803

30' : 21090+4716
ES 512AB

31' : 21100+4811
RAO 448

34' : 21072+4744
ES 817AB

38' : 21089+4815
ARG 42AB

38' : 21077+4718
A 759

40' : 21066+4739
ES 32

40' : 21097+4820
COU2545

44' : 21063+4751
BUP9010AB

44' : 21109+4658
GIC 166AB

45' : 21129+4820
HJ 1625

47' : 21103+4828
TOI1343

47' : 21102+4828
KPP4226

49' : 21057+4748
BU 158AB

50' : 21099+4651
SMA 129

51' : 21068+4708
ES 1169

53' : 21070+4704
BRT1142

53' : 21055+4758
ES 816

55' : 21133+4655
A 884

57' : 21102+4645
SKF2396

58' : 21065+4823
BU 836AB

58' : 21088+4646
SMA 127

59' : 21158+4719
ES 514

59' : 21119+4838
HJ 1624



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21105+4742 BU 159 AB (HD 201836)

 
 
21h 10m 30.96s +47° 41' 32.0" P.A. 313.00 sep 1.2 mag 6.55,9.07 Sp B6IV dist. 423.73 pc (1382.21 l.y.)
 
 
Coord 2000 21105+4742 Discov num BU  159 Comp AB Coord arcsec 2000 21 10 30.96 +47 41 32.0
Date first 1873 Date last 2014 Obs 27
Pa first 330 Pa last 313.3 P.A. Now (θ) 313.3°
Sep first 1.2 Sep last 1.224 Sep. Now (ρ) 1.224"
Mag pri 6.55 Mag sec 9.07 delta mag (ΔM) 2.52 Spectral class B6IV (blue-white)
Pri motion ra -004 Sec motion ra -004
Pri motion dec +001 Sec motion dec +001
Notes N (See Notes)
Nature of this double is uncertain.
 
 
21105+4742 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 201836 50536 21 10 31 +47 41 32 BU 159 AB 2014 27 313 1.2 6.55 9.07 2.52 <===
Show 50536 21 10 31 +47 41 32 STTA 215 AC 2012 22 189 136.7 6.55 7.52 0.97
Show 50536 21 10 31 +47 41 32 BU 159 AD 2015 7 145 14.8 6.55 13.50 6.95
Show 50536 21 10 31 +47 41 32 LV 23 AE 2015 3 338 46.8 6.55 13.50 6.95
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 201836 Constellation Cygnus SAO 50536 HIP 104537
Tycho2 3592-07442-1 Gaia DR2 2165256123904303488 HD 201836 HR 8107
GC 29610 ADS 14720 BD BD+47 3322 Distance 423.73
Distance ly 1382.21
 
 
WDS 21105+4742 BU 159 AB (HD 201836) : NOTES
 
 
discov_num notes refcode
BU 159 AE: Leavenworth refers to a 14th magnitude star in 337.0". Lv_1930
Kuiper's 1934 measure was initially added incorrectly as an additional Kui1961b
component, designated KUI 105AF, although he identified his measure
with the Leavenworth pair.
 
 
REFERENCES
 
 
refcode metd author reference
Kui1961b Ma j Kuiper, G.P. 1961ApJS....6....1K
Kui1961b ApJS 6, 1, 1961
Lv_1930 Ma j Leavenworth, F.P. & Beal, W.O. 1930QB821.L4.......
Lv_1930 Meaures of Double Stars (Minneapolis, Univ. Minnesota Press), 1930
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
179 LV Leavenworth, F.P.
231 STT Struve, O.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21105+4742 BU 159 AB 2003 24 313 1.2 6.55 9.07 B6IV N D 211030.96+474132.0
21105+4742 BU 159 AB 2011 25 312 1.2 6.55 9.07 B6IV N 211030.96+474132.0
21105+4742 BU 159 AB 2012 26 314 1.1 6.55 9.07 B6IV N 211030.96+474132.0
21105+4742 BU 159 AB 2014 27 313 1.2 6.55 9.07 B6IV N 211030.96+474132.0

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

 
 
WDS 21105+4742 BU 159 AB (HD 201836) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21105+4742 BU 159 AB (HD 201836) : MEASURES
 
 
No records found.

 
 
WDS 21105+4742 (HD 201836) : VIRTUAL EYEPIECE
 
 

21105+4742 BU 159A mag 6.55 Sp B6IV 21105+4742 BU 159B sep 1.0 P.A. 324.50 mag 9.07 21105+4742 STTA215C sep 135.8 P.A. 186.00 mag 7.52 21105+4742 BU 159D sep 13.4 P.A. 155.10 mag 13.5 21105+4742 LV 23E sep 45.0 P.A. 345.10 mag 13.5 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 21105+4742 (HD 201836) : ALADIN DSS IMAGE @ 21h 10m 30.96s +47° 41' 32.0"
 
 
 
 
WDS 21105+4742 BU 159 AB (HD 201836) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21105+4742 BU 159AB distance=0' 21100+4745 A 761 distance=7' 21092+4737 TDT2786 distance=15' 21105+4713 TDT2803 distance=29' 21090+4716 ES 512AB distance=30' 21100+4811 RAO 448 distance=31' 21072+4744 ES 817AB distance=34' 21072+4744 ES 817AC distance=34' 21072+4744 ES 817AD distance=34' 21089+4815 ARG 42AB distance=38' 21089+4815 ARG 42AC distance=38' 21089+4815 ARG 42BC distance=38' 21077+4718 A 759 distance=38' 21066+4739 ES 32 distance=40' 21097+4820 COU2545 distance=40' 21063+4751 BUP9010AB distance=44' 21063+4751 BUP9010AC distance=44' 21063+4751 BUP9010AD distance=44' 21109+4658 GIC 166AB distance=44' 21109+4658 JNN 290BC distance=45' 21109+4658 JNN 290BD distance=45' 21129+4820 HJ 1625 distance=45' 21103+4828 TOI1343 distance=47' 21102+4828 KPP4226 distance=47' 21057+4748 BU 158AB distance=49' 21099+4651 SMA 129 distance=50' 21068+4708 ES 1169 distance=51' 21070+4704 BRT1142 distance=53' 21055+4758 ES 816 distance=53' 21133+4655 A 884 distance=55' 21102+4645 SKF2396 distance=57' 21065+4823 BU 836CD distance=58' 21065+4823 BU 836AB distance=58' 21065+4823 BU 836AB,C distance=58' 21088+4646 SMA 127 distance=58' 21158+4719 ES 514 distance=59' 21119+4838 HJ 1624 distance=59' 21127+4349 DJU 6 distance=62' 21100+4640 SMA 130 distance=63' 21119+4845 STJ 110 distance=65' 21043+4806 ARN 51 distance=68' 21117+4849 COU2651 distance=69' 21091+4635 TDT2785 distance=69' 21157+4832 HDS3024 distance=73' 21184+4802 HJ 1633 distance=73' 21083+4630 BRT1143 distance=76' 21077+4851 ES 818AB distance=76' 21151+4642 TDT2858 distance=76' 21077+4851 ES 818BC distance=76' 21170+4704 COU2437 distance=77' 21098+4624 SMA 128 distance=79' 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 21105+4742 BU 159 AB 313 1.2
Show 21105+4742 STTA215 AC 189 136.7
Show 21105+4742 BU 159 AD 145 14.8
Show 21105+4742 LV 23 AE 338 46.8
Show 21100+4745 A 761 56 0.4 7
Show 21092+4737 TDT2786 240 0.7 15
Show 21105+4713 TDT2803 183 0.6 29
Show 21090+4716 ES 512 AB 1 13.4 30
Show 21100+4811 RAO 448 3 3.5 31
Show 21072+4744 ES 817 AB 350 10.0 34
Show 21072+4744 ES 817 AC 347 22.2 34
Show 21072+4744 ES 817 AD 85 23.7 34
Show 21089+4815 ARG 42 AB 60 21.0 38
Show 21089+4815 ARG 42 AC 333 41.8 38
Show 21089+4815 ARG 42 BC 306 45.9 38
Show 21077+4718 A 759 24 4.1 38
Show 21066+4739 ES 32 159 15.7 40
Show 21097+4820 COU2545 74 0.7 40
Show 21063+4751 BUP9010 AB 61 28.5 44
Show 21063+4751 BUP9010 AC 315 50.0 44
Show 21063+4751 BUP9010 AD 322 53.9 44
Show 21109+4658 GIC 166 AB 150 29.3 44
Show 21109+4658 JNN 290 BC 36 2.4 45
Show 21109+4658 JNN 290 BD 189 3.4 45
Show 21129+4820 HJ 1625 71 11.8 45
Show 21103+4828 TOI1343 334 0.5 47
Show 21102+4828 KPP4226 308 1.9 47
Show 21057+4748 BU 158 AB 304 11.0 49
Show 21099+4651 SMA 129 264 14.1 50
Show 21068+4708 ES 1169 89 4.8 51
Show 21070+4704 BRT1142 220 4.6 53
Show 21055+4758 ES 816 36 2.6 53
Show 21133+4655 A 884 111 0.4 55
Show 21102+4645 SKF2396 53 13.3 57
Show 21065+4823 BU 836 CD 64 1.4 58
Show 21065+4823 BU 836 AB 177 0.8 58
Show 21065+4823 BU 836 AB,C 218 27.5 58
Show 21088+4646 SMA 127 130 17.3 58
Show 21158+4719 ES 514 195 4.4 59
Show 21119+4838 HJ 1624 190 6.2 59
Show 21127+4349 DJU 6 24 2.6 62
Show 21100+4640 SMA 130 147 8.7 63
Show 21119+4845 STJ 110 114 1.3 65
Show 21043+4806 ARN 51 340 47.3 68
Show 21117+4849 COU2651 13 0.9 69
Show 21091+4635 TDT2785 68 2.6 69
Show 21157+4832 HDS3024 328 0.3 73
Show 21184+4802 HJ 1633 67 9.9 73
Show 21083+4630 BRT1143 212 2.7 76
Show 21077+4851 ES 818 AB 39 48.6 76
Show 21151+4642 TDT2858 215 2.2 76

 
 
WDS 21105+4742 : COMPONENTS
 
 
  A B C D
B pa=324.5°
sep=1.03"
 
C pa=186.0°
sep=135.80"
pa=185.7°
sep=136.58"
 
D pa=155.1°
sep=13.40"
pa=154.3°
sep=14.41"
pa=9.2°
sep=124.50"
 
E pa=345.1°
sep=45.01"
pa=345.5°
sep=44.05"
pa=0.8°
sep=178.57"
pa=342.8°
sep=58.26"
 
 
21105+4742 A
 
 
Name HD 201836 Coord arcsec 2000 211030.96+474132.0 Mag 6.55 Spectral class B6IV (blue-white)
PmRA -4.00 PmDE 1.0 SAO 50536 HIP 104537
Tycho2 3592-07442-1 HD 201836 HR 8107 GC 29610
BD BD+47 3322
Tycho2
Tycho2 3592-07442-1 Pflag P RAmdeg 317.62896845 DEmdeg 47.69224640
PmRA -3.8 PmDE 0.5 E RAmdeg 4 E DEmdeg 4
E pmRA 2.4 E pmDE 2.3 EpRAm 1991.65 EpDEm 1991.60
Num 4 Q RAmdeg 1.2 Q DEmdeg 1.2 Q pmRA 1.2
Q pmDE 1.3 BTmag 6.531 E BTmag 0.014 VTmag 6.546
E VTmag 0.010 Prox 13 TYC T HIP 104537
CCDM A RAdeg 317.62900000 DEdeg 47.69223389 EpRA 1990 1.70
EpDE 1990 1.65 E RAdeg 3.6 E DEdeg 3.6 Posflg D
Corr 0.1
SAO
SAO 50536 DelFlag RA1950 PmRA1950 0.0001
DE1950 PmDE1950 -0.004 Vmag 6.4 SpType B5
Double code Source 70 CatNum 29610 DM BD+47 3322
DMcomp BDsup HD 201836 M HD 0
GC 29610 RA1950rad 5.5360899 DE1950rad 0.82880852 PmRA2000 0.0004
PmDE2000 -0.007
Hipparcos
Catalog H HIP 104537 Proxy H RAhms 21 10 30.96
DEdms +47 41 32.0 Vmag 6.46 VarFlag R Vmag G
RAdeg 317.629 DEdeg 47.6922 AstroRef A Plx 2.17
CCDM 21105+4741 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 313 Rho 1.232 HD 201836 BD BD+47 3322
CD CP Dm number +47 3322 VIred 0
SpType B6IV R SpType Coord arcsec 2000 211030.96+474132.0
Hipparcos 2
HIP 104537 Sn 15 So 3 Nc 2
RArad 5.5436718958 DErad 0.8323864908 Plx 2.36 PmRA -4.88
PmDE -2.36 E RArad 0.35 E DErad 0.36 E Plx 0.48
E pmRA 0.49 E pmDE 0.4 Hpmag 6.4628 E Hpmag 0.001
SHp 0.007 VA 0 BV 0.007 E BV 0.024
VI 0
 
 
21105+4742 B
 
 
Coord arcsec 2000 211030.90+474132.8 Mag 9.07 PmRA -4.00 PmDE 1.0
Tycho2 3592-07442-2 Calc delta mag 2.52 Calc coord yes
Tycho2
Tycho2 3592-07442-2 Pflag P RAmdeg 317.62896845 DEmdeg 47.69224640
PmRA -3.8 PmDE 0.5 E RAmdeg 4 E DEmdeg 4
E pmRA 2.4 E pmDE 2.3 EpRAm 1991.65 EpDEm 1991.60
Num 4 Q RAmdeg 1.2 Q DEmdeg 1.2 Q pmRA 1.2
Q pmDE 1.3 BTmag 9.106 E BTmag 0.018 VTmag 9.072
E VTmag 0.018 Prox 13 TYC HIP 104537
CCDM B RAdeg 317.62861167 DEdeg 47.69247778 EpRA 1990 1.71
EpDE 1990 1.66 E RAdeg 8.8 E DEdeg 9.3 Posflg D
Corr 0.1
 
 
21105+4742 C
 
 
Coord arcsec 2000 211029.55+473916.9 Mag 7.52 PmRA -5.00 PmDE -18.0
SAO 50535 Tycho2 3592-07320-1 HD 201837 DM BD+47 3321
Calc delta mag 0.97 Calc coord yes
Tycho2
Tycho2 3592-07320-1 Pflag RAmdeg 317.62014110 DEmdeg 47.65485481
PmRA -4.6 PmDE -18.0 E RAmdeg 5 E DEmdeg 5
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.44 EpDEm 1991.36
Num 8 Q RAmdeg 1.6 Q DEmdeg 1.6 Q pmRA 1.7
Q pmDE 1.5 BTmag 9.149 E BTmag 0.017 VTmag 7.515
E VTmag 0.011 Prox 999 TYC T HIP
CCDM RAdeg 317.62015694 DEdeg 47.65489667 EpRA 1990 1.73
EpDE 1990 1.64 E RAdeg 4.9 E DEdeg 5.2 Posflg
Corr 0.1
SAO
SAO 50535 DelFlag RA1950 PmRA1950 -0.0018
DE1950 PmDE1950 -0.022 Vmag 7.7 SpType Mb
Double code Source 3 CatNum 1714 DM BD+47 3321
DMcomp BDsup HD 201837 M HD 0
GC RA1950rad 5.53592953 DE1950rad 0.82816236 PmRA2000 -0.0015
PmDE2000 -0.025
 
 
21105+4742 D
 
 
Coord arcsec 2000 211031.52+474119.8 Mag 13.5 Calc delta mag 6.95 Calc coord yes
 
 
21105+4742 E
 
 
Coord arcsec 2000 211029.81+474215.5 Mag 13.5 Calc delta mag 6.95 Calc coord yes