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Current system
20472-6749
DON 991


Nearby doubles
30' : 20432-6730
LDS 718

40' : 20459-6710
TDT2524

48' : 20549-6810
UC 4322

50' : 20560-6748
TDT2639

50' : 20559-6742
TDT2637

60' : 20489-6847
SHY 782

70' : 20363-6822
TDT2413

74' : 20452-6902
SKF 378

76' : 20449-6904
BRT2017

78' : 20361-6705
CBL 179

79' : 20573-6655
TDT2657

80' : 20411-6638
NZO 102

87' : 20330-6822
HJ 5200AB

95' : 21032-6723
DON 997

97' : 20324-6704
TDT2345

104' : 20304-6711
TDT2329

105' : 20370-6623
TDT2424

106' : 21026-6651
TDT2709

112' : 20557-6609
HDS2981AB

113' : 20309-6648
MLO 89

115' : 20598-6621
TDT2683

119' : 21059-6844
DON 998AB

120' : 20468-6948
KPP1680

120' : 20492-6550
TDT2562

120' : 20368-6934
TDT2422

120' : 20303-6904
HJ 5194



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

20472-6749 DON 991

 
 
20h 47m 14.14s -67° 48' 45.5" P.A. 76.00 sep 2.3 mag 9.44,14.30 Sp A0
 
 
Coord 2000 20472-6749 Discov num DON 991 Comp Coord arcsec 2000 20 47 14.14 -67 48 45.5
Date first 1928 Date last 2015 Obs 2
Pa first 72 Pa last 75.6 P.A. Now (θ) 75.6°
Sep first 1.8 Sep last 2.324 Sep. Now (ρ) 2.324"
Mag pri 9.44 Mag sec 14.30 delta mag (ΔM) 4.86 Spectral class A0 (white)
Pri motion ra -003 Sec motion ra
Pri motion dec -012 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Pavo Tycho2 9308-00306-1 Gaia DR2 6424952289460967168 HD 197360
 
 
WDS 20472-6749 DON 991 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Don1937 Ma j Donner, H.F. 1937MmRAS..65...51R
Don1937 MemRAS 65, 51, 1937
Don1955 Ma - Donner, H.F. 1955POMic..11....1R
Don1955 Pub. Univ. Michigan Obs. 11, 1, 1955
Don1964 Ma j Donner, H.F. 1964POMic...9...73R
Don1964 Pub. Univ. Michigan Obs. 9, 73, 1964
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20472-6749 DON 991 1928 1 72 1.8 9.44 14.30 A0 204714.14-674845.5
20472-6749 DON 991 2015 2 76 2.3 9.44 14.30 A0 204714.14-674845.5

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

 
 
WDS 20472-6749 DON 991 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20472-6749 DON 991 : MEASURES
 
 
No records found.

 
 
WDS 20472-6749 : VIRTUAL EYEPIECE
 
 

20472-6749 DON 991A mag 9.44 Sp A0 20472-6749 DON 991B sep 1.0 P.A. 55.80 mag 14.3 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20472-6749 : ALADIN DSS IMAGE @ 20h 47m 14.14s -67° 48' 45.5"
 
 
 
 
WDS 20472-6749 DON 991 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20472-6749 DON 991 distance=0' 20432-6730 LDS 718 distance=30' 20459-6710 TDT2524 distance=40' 20549-6810 UC 4322 distance=48' 20560-6748 TDT2639 distance=50' 20559-6742 TDT2637 distance=50' 20489-6847 SHY 782 distance=60' 20363-6822 TDT2413 distance=70' 20452-6902 SKF 378 distance=74' 20449-6904 BRT2017 distance=76' 20361-6705 CBL 179 distance=78' 20573-6655 TDT2657 distance=79' 20411-6638 NZO 102 distance=80' 20446-6630 TOK 918Aa,Ab distance=81' 20330-6822 HJ 5200AB distance=87' 21032-6723 DON 997 distance=95' 20324-6704 TDT2345 distance=97' 20304-6711 TDT2329 distance=104' 20370-6623 TDT2424 distance=105' 21026-6651 TDT2709 distance=106' 20557-6609 HDS2981AB distance=112' 20557-6609 HDS2981AC distance=112' 20309-6648 MLO 89 distance=113' 20598-6621 TDT2683 distance=115' 21059-6844 DON 998AB distance=119' 21059-6844 BAU 65AC distance=119' 20468-6948 KPP1680 distance=120' 20492-6550 TDT2562 distance=120' 20368-6934 TDT2422 distance=120' 20303-6904 HJ 5194 distance=120' 20553-6557 DAM1257 distance=122' 20478-6546 TDT2544 distance=123' 20404-6551 KPP4210 distance=125' 20594-6936 UC 4352 distance=127' 20552-6550 LDS 728 distance=128' 20515-6543 HJ 5221 distance=129' 20513-6542 UC 4309 distance=130' 20594-6558 MLO 91 distance=132' 20356-6949 TDT2402 distance=136' 20371-6523 UC 4233 distance=158' 20349-7017 TDT2395 distance=163' 20354-6519 HDS2942 distance=166' 20587-7025 HJ 5231A,BC distance=169' 20587-7025 I 668BC distance=169' 20284-7004 HEI 276 distance=174' 20490-6453 UC 4298 distance=176' 20370-6455 TSN 35 distance=185' 20553-7049 UC 4328 distance=186' 20472-7056 TDS1100 distance=188' 20508-7059 HDS2973 distance=192' 20397-6436 FAB 16 distance=198' 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 20472-6749 DON 991 76 2.3
Show 20432-6730 LDS 718 309 29.1 30
Show 20459-6710 TDT2524 164 0.4 40
Show 20549-6810 UC 4322 10 16.8 48
Show 20560-6748 TDT2639 325 0.9 50
Show 20559-6742 TDT2637 246 0.5 50
Show 20489-6847 SHY 782 107 999.9 60
Show 20363-6822 TDT2413 169 0.8 70
Show 20452-6902 SKF 378 245 42.0 74
Show 20449-6904 BRT2017 6 4.1 76
Show 20361-6705 CBL 179 107 24.7 78
Show 20573-6655 TDT2657 126 0.7 79
Show 20411-6638 NZO 102 141 10.1 80
Show 20446-6630 TOK 918 Aa,Ab 336 0.1 81
Show 20330-6822 HJ 5200 AB 135 12.1 87
Show 21032-6723 DON 997 61 2.5 95
Show 20324-6704 TDT2345 217 0.5 97
Show 20304-6711 TDT2329 167 0.5 104
Show 20370-6623 TDT2424 19 1.8 105
Show 21026-6651 TDT2709 213 0.7 106
Show 20557-6609 HDS2981 AB 243 0.1 112
Show 20557-6609 HDS2981 AC 172 1.3 112
Show 20309-6648 MLO 89 137 5.2 113
Show 20598-6621 TDT2683 186 2.4 115
Show 21059-6844 DON 998 AB 155 4.0 119
Show 21059-6844 BAU 65 AC 254 60.0 119
Show 20468-6948 KPP1680 64 12.9 120
Show 20492-6550 TDT2562 279 0.5 120
Show 20368-6934 TDT2422 308 0.9 120
Show 20303-6904 HJ 5194 255 3.6 120
Show 20553-6557 DAM1257 104 87.1 122
Show 20478-6546 TDT2544 158 0.5 123
Show 20404-6551 KPP4210 53 1.5 125
Show 20594-6936 UC 4352 355 33.2 127
Show 20552-6550 LDS 728 253 277.9 128
Show 20515-6543 HJ 5221 44 10.3 129
Show 20513-6542 UC 4309 344 30.7 130
Show 20594-6558 MLO 91 242 17.0 132
Show 20356-6949 TDT2402 166 0.6 136
Show 20371-6523 UC 4233 2 9.3 158
Show 20349-7017 TDT2395 295 2.8 163
Show 20354-6519 HDS2942 86 0.7 166
Show 20587-7025 HJ 5231 A,BC 112 6.7 169
Show 20587-7025 I 668 BC 333 1.0 169
Show 20284-7004 HEI 276 153 1.3 174
Show 20490-6453 UC 4298 57 10.8 176
Show 20370-6455 TSN 35 73 35.3 185
Show 20553-7049 UC 4328 210 47.5 186
Show 20472-7056 TDS1100 233 0.9 188
Show 20508-7059 HDS2973 70 0.7 192
Show 20397-6436 FAB 16 358 20.0 198

 
 
WDS 20472-6749 : COMPONENTS
 
 
  A
B pa=55.8°
sep=1.03"
 
 
20472-6749 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204714.14-674845.5 Mag 9.44 Spectral class A0 (white)
PmRA -3.00 PmDE -12.0 Tycho2 9308-00306-1 HD 197360
DM CP-68 3385
Tycho2
Tycho2 9308-00306-1 Pflag RAmdeg 311.80892822 DEmdeg -67.81266287
PmRA 4.0 PmDE -1.7 E RAmdeg 8 E DEmdeg 7
E pmRA 1.3 E pmDE 1.4 EpRAm 1990.60 EpDEm 1991.20
Num 9 Q RAmdeg 0.8 Q DEmdeg 1.7 Q pmRA 0.8
Q pmDE 1.8 BTmag 9.503 E BTmag 0.017 VTmag 9.440
E VTmag 0.015 Prox 999 TYC T HIP
CCDM RAdeg 311.80890361 DEdeg -67.81265917 EpRA 1990 1.59
EpDE 1990 1.73 E RAdeg 8.2 E DEdeg 6.9 Posflg
Corr 0.2
CCDM
Ccdm 20472-6749 RComp Comp A Note1
Note2 Discov num DRAs 2.23 DDEs 13.5
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.1 Sp A0 PmNote *
PmRA 17 PmDE -11 Dm number -68 3385 Cat1 CPD
Name2 Cat2 HD 197360 M HD
ADS BDS M ADS BDS N IDS IDS 20379S6811A
HIC
 
 
20472-6749 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204714.29-674844.9 Mag 14.3 Calc delta mag 4.86
Calc coord yes
CCDM
Ccdm 20472-6749 RComp Comp B Note1
Note2 Discov num DON 991 DRAs DDEs
R dRAs Year 1928 Theta 072 Rho 1.8
Obs 1 Vmag 14.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20379S6811B
HIC