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Current system
20027-0036
HJ 2921
HD 189962


Nearby doubles
10' : 20032+0042
HDO 316AB

15' : 20022+0049
BAL1211

19' : 20015+0040
HDO 315

27' : 20027+0009
GWP2918

30' : 20017-0012
H 1 93AB

37' : 20018+0110
A 2276

40' : 20053+0027
HJ 2927AB

43' : 20048-0007
TDT1955

45' : 20048+0109
TOK 699

50' : 20012+0120
A 2275

50' : 19597-0019
BAL 919

53' : 19593+0044
BAL1209AB

53' : 20052+0114
UC 4078

56' : 20060+0102
TDS1041

67' : 19583-0037
J 1386

71' : 20023+0147
DAM 383

72' : 20035+0147
BAL1542

72' : 20026+0148
DAM 384AB

73' : 20025+0149
HJ 5510

73' : 20075-0037
H 4 34

75' : 20075+0057
UC 4090

77' : 20078+0021
BAL1212

79' : 20074+0000
J 2570AB

80' : 20080-0041
SHY 325

86' : 20083+0052
BAL1213

92' : 19571+0003
GWP2912



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.

20027-0036 HJ 2921 (HD 189962)

 
 
20h 02m 44.88s -00° 36' 23.7" P.A. 341.00 sep 21.7 mag 8.52,12.02 Sp K0 dist. 591.72 pc (1930.19 l.y.)
 
 
Coord 2000 20027-0036 Discov num HJ 2921 Comp Coord arcsec 2000 20 02 44.88 -00 36 23.7
Date first 1830 Date last 2015 Obs 13
Pa first 342 Pa last 341.3 P.A. Now (θ) 341.3°
Sep first 15.0 Sep last 21.703 Sep. Now (ρ) 21.703"
Mag pri 8.52 Mag sec 12.02 delta mag (ΔM) 3.5 Spectral class K0 (yellow-orange)
Pri motion ra -013 Sec motion ra -001
Pri motion dec -014 Sec motion dec -006
Notes
rPM=0.755
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 189962 Constellation Aquila SAO 144019 HIP 98694
Tycho2 5160-00473-1 HD 189962 BD BD-01 3885 Distance 591.72
Distance ly 1930.19
 
 
WDS 20027-0036 HJ 2921 (HD 189962) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
HJ_1826 Mb - Herschel, J.F.W. 1826MmRAS...2..459H
HJ_1826 MemRAS 2, 459, 1826
HJ_1829a Mb - Herschel, J.F.W. 1829MmRAS...3...47H
HJ_1829a MemRAS 3, 47, 1829
HJ_1829b Mb - Herschel, J.F.W. 1829MmRAS...3..177H
HJ_1829b MemRAS 3, 177, 1829
HJ_1831 Ma - Herschel, J.F.W. 1831MmRAS...4..331H
HJ_1831 +Mb MemRAS 4, part 2, 331, 1831
HJ_1833a Ma - Herschel, J.F.W. 1833MmRAS...5...13H
HJ_1833a +Mb MemRAS 5, 13, 1833
HJ_1833b orb - Herschel, J.F.W. 1833MmRAS...5..171H
HJ_1833b MemRAS 5, 171, 1833
HJ_1833c Mb - Herschel, J.F.W. 1833MmRAS...6....1H
HJ_1833c MemRAS 6, 1, 1833
HJ_1833d orb - Herschel, J.F.W. 1833MmRAS...6..149H
HJ_1833d MemRAS 6, 149, 1833
HJ_1835 Ma - Herschel, J.F.W. 1835MmRAS...8...37H
HJ_1835 +Mb MemRAS 8, 37, 1835
HJ_1836 Mb - Herschel, J.F.W. 1836MmRAS...9..193H
HJ_1836 MemRAS 9, 193, 1836
HJ_1847a Ma j Herschel, J.F.W. .
HJ_1847a +Mb Cape Results, London, 1847 (Cape of Good Hope Astronomical Observations 1834-1838)
HJ_1847b Ma j Herschel, J.F.W. .
HJ_1847b Cape Results, London, 1847
HJ_1850 orb - Herschel, J.F.W. 1850MmRAS..18...47H
HJ_1850 MemRAS 18, 47, 1850
HJ_1870 Mb - Herschel, J.F.W. 1870MmRAS..38....1H
HJ_1870 MemRAS 38, 1, 1870
HJ_1874A - Herschel, J.F.W. 1874MNRAS..35...28B
HJ_1874A cited by Burnham (MNRAS 35, 28, 1874)
HJ_1875A Ma - Herschel, J.F.W. 1875AN.....85..323D
HJ_1875A +Mb cited by Doberck, 1875 (see Dob1875b,f,g,h)
HJ_1880A Ma - Herschel, J.F.W. 1880Obs.....3..508G
HJ_1880A +Mb cited by Gledhill (Obs 3, 508, 1880)
HJ_1880B Mb - Herschel, J.F.W. 1880MNRAS..40..497B
HJ_1880B cited by Burnham (MNRAS 40, 497, 1880)
HJ_1897A Ma j Herschel, J.F.W. 1897MNRAS..57..541S
HJ_1897A cited by See (MNRAS 57, 541, 1897)
HJ_1905A Ma - Herschel, J.F.W. 1905LicOB...3..147A
HJ_1905A +Mb cited by Aitken (Lick Obs. Bull. 3, 147, 1905)
HJ_1906A Ma - Herschel, J.F.W. 1906MmRAS..56....1L
HJ_1906A +Mb cited by Lewis (MemRAS 56, 1, 1906)
HJ_1906B Ma - Herschel, J.F.W. 1906QB821.B972.....
HJ_1906B +Mb cited in BDS (Burnham Double Star Cat.), 1906
HJ_1927A Mb - Herschel, J.F.W. 1927sdsc.book......
HJ_1927A cited in SDS (Southern Double Star Catalog), 1927
HJ_1932A Mb - Herschel, J.F.W. 1932QB821.A43......
HJ_1932A cited in ADS (Aitken Double Star Cat.), 1932
HJ_9999 M j Herschel, J.F.W. ...................
HJ_9999 +Ma Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20027-0036 HJ 2921 2005 8 341 21.7 8.80 11.00 K0 D 200244.88-003623.7
20027-0036 HJ 2921 2010 10 341 21.5 8.52 12.02 K0 200244.88-003623.7
20027-0036 HJ 2921 2015 11 341 21.7 8.52 12.02 K0 200244.88-003623.7

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

 
 
WDS 20027-0036 HJ 2921 (HD 189962) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20027-0036 HJ 2921 (HD 189962) : MEASURES
 
 
No records found.

 
 
WDS 20027-0036 (HD 189962) : VIRTUAL EYEPIECE
 
 

20027-0036 HJ 2921A mag 8.52 Sp K0 20027-0036 HJ 2921B sep 21.7 P.A. 341.30 mag 12.02 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 20027-0036 (HD 189962) : ALADIN DSS IMAGE @ 20h 02m 44.88s -00° 36' 23.7"
 
 
 
 
WDS 20027-0036 HJ 2921 (HD 189962) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20027-0036 HJ 2921 distance=0' 20032+0042 HDO 316AB distance=10' 20032+0042 HDO 316AC distance=10' 20022+0049 BAL1211 distance=15' 20015+0040 HDO 315 distance=19' 20027+0009 GWP2918 distance=27' 20017-0012 H 1 93AB distance=30' 20017-0012 H 1 93AC distance=30' 20018+0110 A 2276 distance=37' 20053+0027 HJ 2927AB distance=40' 20053+0027 BU 1482BC distance=41' 20048-0007 TDT1955 distance=43' 20048+0109 TOK 699 distance=45' 20012+0120 A 2275 distance=50' 19597-0019 BAL 919 distance=50' 19593+0044 BAL1209AB distance=53' 20052+0114 UC 4078 distance=53' 20060+0102 TDS1041 distance=56' 19583-0037 J 1386 distance=67' 20023+0147 DAM 383 distance=71' 20035+0147 BAL1542 distance=72' 20026+0148 DAM 384AB distance=72' 20026+0148 DAM 384AC distance=72' 20025+0149 HJ 5510 distance=73' 20075-0037 H 4 34 distance=73' 20075+0057 UC 4090 distance=75' 20078+0021 BAL1212 distance=77' 20074+0000 J 2570AB distance=79' 20074+0000 J 2570AC distance=79' 20080-0041 SHY 325 distance=80' 20083+0052 BAL1213 distance=86' 19571+0003 GWP2912 distance=92' 19589+0149 HJ 2914 distance=93' 20089-0047 UC 4103 distance=94' 19574+0128 J 1870 distance=97' 20031+0213 BAL1541 distance=97' 19580+0142 BAL1538 distance=98' 20061+0159 HLD 156 distance=98' 20068+0157 A 2278AB distance=101' 20068+0157 A 2278AC distance=101' 19561+0007 BAL 916 distance=104' 19563+0001 BAL 917 distance=104' 20090+0127 BAL1544 distance=106' 20066+0207 HJ 902 distance=108' 20102+0043 GRV 317 distance=113' 19552-0023 J 2563 distance=113' 19552-0051 BU 830 distance=115' 20025+0232 BAL2014 distance=115' 19586-0101 HJ 901 distance=116' 19548-0025 J 2698 distance=117' 20096+0132 TDT2036 distance=118' 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 20027-0036 HJ 2921 341 21.7
Show 20032+0042 HDO 316 AB 143 4.5 10
Show 20032+0042 HDO 316 AC 189 16.4 10
Show 20022+0049 BAL1211 80 12.1 15
Show 20015+0040 HDO 315 203 8.7 19
Show 20027+0009 GWP2918 49 94.5 27
Show 20017-0012 H 1 93 AB 297 1.8 30
Show 20017-0012 H 1 93 AC 27.4 30
Show 20018+0110 A 2276 59 3.8 37
Show 20053+0027 HJ 2927 AB 124 23.6 40
Show 20053+0027 BU 1482 BC 178 3.8 41
Show 20048-0007 TDT1955 258 0.5 43
Show 20048+0109 TOK 699 267 0.2 45
Show 20012+0120 A 2275 146 0.4 50
Show 19597-0019 BAL 919 34 7.8 50
Show 19593+0044 BAL1209 AB 218 12.5 53
Show 20052+0114 UC 4078 82 48.3 53
Show 20060+0102 TDS1041 257 1.2 56
Show 19583-0037 J 1386 319 3.9 67
Show 20023+0147 DAM 383 103 5.2 71
Show 20035+0147 BAL1542 236 10.2 72
Show 20026+0148 DAM 384 AB 350 14.9 72
Show 20026+0148 DAM 384 AC 343 5.4 72
Show 20025+0149 HJ 5510 28 10.9 73
Show 20075-0037 H 4 34 198 49.7 73
Show 20075+0057 UC 4090 233 21.3 75
Show 20078+0021 BAL1212 114 12.3 77
Show 20074+0000 J 2570 AB 79 3.6 79
Show 20074+0000 J 2570 AC 302 11.4 79
Show 20080-0041 SHY 325 228 999.9 80
Show 20083+0052 BAL1213 330 5.5 86
Show 19571+0003 GWP2912 232 8.2 92
Show 19589+0149 HJ 2914 209 13.5 93
Show 20089-0047 UC 4103 119 6.7 94
Show 19574+0128 J 1870 283 7.7 97
Show 20031+0213 BAL1541 29 8.8 97
Show 19580+0142 BAL1538 214 16.6 98
Show 20061+0159 HLD 156 255 1.3 98
Show 20068+0157 A 2278 AB 214 0.9 101
Show 20068+0157 A 2278 AC 355 22.5 101
Show 19561+0007 BAL 916 219 9.2 104
Show 19563+0001 BAL 917 104 16.7 104
Show 20090+0127 BAL1544 143 6.6 106
Show 20066+0207 HJ 902 17 7.1 108
Show 20102+0043 GRV 317 46 45.1 113
Show 19552-0023 J 2563 137 4.3 113
Show 19552-0051 BU 830 112 2.4 115
Show 20025+0232 BAL2014 35 11.6 115
Show 19586-0101 HJ 901 231 12.3 116
Show 19548-0025 J 2698 270 8.5 117
Show 20096+0132 TDT2036 76 0.5 118

 
 
WDS 20027-0036 : COMPONENTS
 
 
  A
B pa=341.3°
sep=21.70"
 
 
20027-0036 A
 
 
Componente originario normalizzato AB Name HD 189962 Coord arcsec 2000 200244.88-003623.7 Mag 8.52
Spectral class K0 (yellow-orange) PmRA -13.00 PmDE -14.0 SAO 144019
HIP 98694 Tycho2 5160-00473-1 HD 189962 BD BD-01 3885
Tycho2
Tycho2 5160-00473-1 Pflag RAmdeg 300.68696585 DEmdeg -0.60662370
PmRA -13.0 PmDE -13.5 E RAmdeg 10 E DEmdeg 11
E pmRA 0.9 E pmDE 0.9 EpRAm 1987.82 EpDEm 1987.13
Num 15 Q RAmdeg 0.9 Q DEmdeg 1.1 Q pmRA 0.9
Q pmDE 1.1 BTmag 9.743 E BTmag 0.031 VTmag 8.515
E VTmag 0.018 Prox 999 TYC T HIP 98694
CCDM RAdeg 300.68699611 DEdeg -0.60659444 EpRA 1990 1.64
EpDE 1990 1.48 E RAdeg 11.4 E DEdeg 13.3 Posflg
Corr -0.1
SAO
SAO 144019 DelFlag RA1950 PmRA1950 -0.0007
DE1950 PmDE1950 -0.014 Vmag 8.6 SpType K0
Double code Source 31 CatNum 5048 DM BD-01 3885
DMcomp BDsup HD 189962 M HD 0
GC RA1950rad 5.23674835 DE1950rad -0.01304105 PmRA2000 -0.0005
PmDE2000 -0.016
Hipparcos
Catalog H HIP 98694 Proxy RAhms 20 02 44.88
DEdms -00 36 23.7 Vmag 8.39 VarFlag R Vmag H
RAdeg 300.687 DEdeg -0.606591 AstroRef Plx 0.71
CCDM 20027-0036 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 189962 BD BD-01 3885
CD CP Dm number -01 3885 VIred 0.97
SpType K0 R SpType Coord arcsec 2000 200244.88-003623.7
Hipparcos 2
HIP 98694 Sn 5 So 0 Nc 1
RArad 5.2479781666 DErad -0.0105870179 Plx 1.69 PmRA -14.1
PmDE -14.61 E RArad 0.94 E DErad 0.76 E Plx 1.16
E pmRA 1.36 E pmDE 1.1 Hpmag 8.5576 E Hpmag 0.0025
SHp 0.014 VA 0 BV 1.052 E BV 0.033
VI 1.02
CCDM
Ccdm 20027-0036 RComp Comp A Note1
Note2 Discov num DRAs 2.88 DDEs -23.9
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.8 Sp K0 PmNote *
PmRA -12 PmDE -12 Dm number -01 3885 Cat1 BD
Name2 -00 2562 Cat2 AGK2/3 HD 189962 M HD
ADS BDS M ADS BDS N IDS IDS 19576S0053A
HIC 98694
 
 
20027-0036 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 200244.42+003644.3 Mag 12.02 PmRA -1.00
PmDE -6.0 Calc delta mag 3.5 Calc coord yes
CCDM
Ccdm 20027-0036 RComp Comp B Note1
Note2 Discov num HJ 2921 DRAs DDEs
R dRAs Year 1896 Theta 338 Rho 21.3
Obs 3 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 19576S0053B
HIC