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Current system
18500-3921
WG 236
HD 173970


Nearby doubles
35' : 18515-3851
B 2869

42' : 18525-3951
RST2080

43' : 18527-3950
WG 237

44' : 18534-3858
VOU 96

45' : 18496-4005
UC 3688

49' : 18486-4007
TOI1081

52' : 18469-3959
UC 3668

57' : 18529-3837
VOU 94

59' : 18544-3854
VOU 97

63' : 18450-3945
SKF2070

68' : 18493-4028
UC 3683

69' : 18477-4024
UC 3673

71' : 18535-4019
TDT1115

71' : 18533-3823
VOU 95

73' : 18552-3843
VOU 98AB

75' : 18564-3929
TDT1138

76' : 18464-4025
RST2072AB

83' : 18429-3917
I 1379

89' : 18448-3816
I 1028

89' : 18434-3838
B 2458

90' : 18426-3858
SKF2069

90' : 18424-3904
UC 3648

91' : 18457-3805
UC 3664

94' : 18578-3944
UC 3742

96' : 18438-3819
COO 227AB

96' : 18570-4012
NSN 486AB



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.

18500-3921 WG 236 (HD 173970)

 
 
18h 50m 00.69s -39° 20' 53.8" P.A. 223.00 sep 16.1 mag 8.33,11.00 Sp F2V dist. 110.86 pc (361.63 l.y.)
 
 
Coord 2000 18500-3921 Discov num WG  236 Comp Coord arcsec 2000 18 50 00.69 -39 20 53.8
Date first 1903 Date last 2010 Obs 8
Pa first 219 Pa last 222.5 P.A. Now (θ) 222.5°
Sep first 14.5 Sep last 16.14 Sep. Now (ρ) 16.14"
Mag pri 8.33 Mag sec 11.00 delta mag (ΔM) 2.67 Spectral class F2V (yellow-white)
Pri motion ra +021 Sec motion ra -003
Pri motion dec -016 Sec motion dec -024
Notes
rPM=0.958
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 173970 Constellation Corona Austrina SAO 210609 HIP 92415
Tycho2 7916-00456-1 Gaia DR2 6729027482864861440 HD 173970 CD CD-3912933
Distance 110.86 Distance ly 361.63
 
 
WDS 18500-3921 WG 236 (HD 173970) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Wg_1911a Ma - Wrigley, R.W. 1911MNRAS..71..479W
Wg_1911a MNRAS 71, 479, 1911
Wg_1911 Pa j Wrigley, R.W. 1911MNRAS..72...34W
Wg_1911 MNRAS 72, 34, 1911
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18500-3921 WG 236 1999 6 222 16.0 8.30 11.00 F2V D 185000.69-392053.8
18500-3921 WG 236 2010 8 223 15.6 8.33 11.00 F2V 185000.69-392053.8

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

 
 
WDS 18500-3921 WG 236 (HD 173970) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18500-3921 WG 236 (HD 173970) : MEASURES
 
 
No records found.

 
 
WDS 18500-3921 (HD 173970) : VIRTUAL EYEPIECE
 
 

18500-3921 WG 236A mag 8.33 Sp F2V 18500-3921 WG 236B sep 14.6 P.A. 215.30 mag 11 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18500-3921 (HD 173970) : ALADIN DSS IMAGE @ 18h 50m 00.69s -39° 20' 53.8"
 
 
 
 
WDS 18500-3921 WG 236 (HD 173970) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18500-3921 WG 236 distance=0' 18515-3851 B 2869 distance=35' 18525-3951 RST2080 distance=42' 18527-3950 WG 237 distance=43' 18534-3858 VOU 96 distance=44' 18496-4005 UC 3688 distance=45' 18486-4007 TOI1081 distance=49' 18469-3959 UC 3668 distance=52' 18529-3837 VOU 94 distance=57' 18544-3854 VOU 97 distance=59' 18450-3945 SKF2070 distance=63' 18493-4028 UC 3683 distance=68' 18477-4024 UC 3673 distance=69' 18535-4019 TDT1115 distance=71' 18533-3823 VOU 95 distance=71' 18552-3843 VOU 98AB distance=73' 18552-3843 VOU 98AC distance=73' 18564-3929 TDT1138 distance=75' 18464-4025 UC 3667CD distance=76' 18464-4025 RST2072AB distance=76' 18464-4025 RST2072AC distance=76' 18429-3917 I 1379 distance=83' 18448-3816 I 1028 distance=89' 18434-3838 B 2458 distance=89' 18426-3858 SKF2069 distance=90' 18424-3904 UC 3648 distance=90' 18457-3805 UC 3664 distance=91' 18578-3944 UC 3742 distance=94' 18438-3819 COO 227AB distance=96' 18438-3819 COO 227AC distance=96' 18570-4012 NSN 486BC distance=96' 18570-4012 NSN 486AB distance=96' 18570-4012 NSN 486AC distance=96' 18459-4046 HDS2661AB distance=98' 18510-4104 HJ 5066 distance=104' 18456-3750 B 945 distance=105' 18565-4035 RSS 497 distance=105' 18503-3736 SWR 255 distance=106' 18550-4050 RST2081 distance=106' 18592-3932 HJ 5074 distance=107' 18572-4029 TDT1146 distance=108' 18564-4040 WG 238 distance=109' 18548-4054 CPO 601 distance=109' 18524-4111 UC 3704 distance=114' 18424-3810 TDT1013 distance=115' 18470-4110 TDS 944 distance=115' 18401-3910 KPP4114 distance=116' 18420-4034 UC 3642 distance=117' 19002-3938 UC 3753 distance=119' 18494-4120 TDT1073 distance=120' 19002-3945 WG 240 distance=120' 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 18500-3921 WG 236 223 16.1
Show 18515-3851 B 2869 77 10.3 35
Show 18525-3951 RST2080 157 3.9 42
Show 18527-3950 WG 237 307 5.2 43
Show 18534-3858 VOU 96 126 1.9 44
Show 18496-4005 UC 3688 65 22.7 45
Show 18486-4007 TOI1081 150 0.3 49
Show 18469-3959 UC 3668 22 40.3 52
Show 18529-3837 VOU 94 50 7.5 57
Show 18544-3854 VOU 97 168 6.9 59
Show 18450-3945 SKF2070 106 17.6 63
Show 18493-4028 UC 3683 270 22.6 68
Show 18477-4024 UC 3673 244 19.6 69
Show 18535-4019 TDT1115 260 0.7 71
Show 18533-3823 VOU 95 241 5.4 71
Show 18552-3843 VOU 98 AB 197 2.5 73
Show 18552-3843 VOU 98 AC 262 8.2 73
Show 18564-3929 TDT1138 209 0.8 75
Show 18464-4025 UC 3667 CD 147 42.0 76
Show 18464-4025 RST2072 AB 241 1.5 76
Show 18464-4025 RST2072 AC 22 10.5 76
Show 18429-3917 I 1379 122 0.1 83
Show 18448-3816 I 1028 319 0.8 89
Show 18434-3838 B 2458 59 8.1 89
Show 18426-3858 SKF2069 182 12.4 90
Show 18424-3904 UC 3648 270 23.6 90
Show 18457-3805 UC 3664 179 62.1 91
Show 18578-3944 UC 3742 160 38.7 94
Show 18438-3819 COO 227 AB 213 29.5 96
Show 18438-3819 COO 227 AC 51 43.3 96
Show 18570-4012 NSN 486 BC 295 22.3 96
Show 18570-4012 NSN 486 AB 280 2.8 96
Show 18570-4012 NSN 486 AC 294 23.6 96
Show 18459-4046 HDS2661 AB 263 4.3 98
Show 18510-4104 HJ 5066 85 10.1 104
Show 18456-3750 B 945 39 0.9 105
Show 18565-4035 RSS 497 134 10.6 105
Show 18503-3736 SWR 255 30 29.2 106
Show 18550-4050 RST2081 280 2.0 106
Show 18592-3932 HJ 5074 246 16.1 107
Show 18572-4029 TDT1146 214 0.9 108
Show 18564-4040 WG 238 129 6.7 109
Show 18548-4054 CPO 601 246 6.1 109
Show 18524-4111 UC 3704 144 64.9 114
Show 18424-3810 TDT1013 327 4.8 115
Show 18470-4110 TDS 944 139 2.4 115
Show 18401-3910 KPP4114 93 35.1 116
Show 18420-4034 UC 3642 337 47.0 117
Show 19002-3938 UC 3753 259 49.5 119
Show 18494-4120 TDT1073 3 0.5 120
Show 19002-3945 WG 240 206 5.3 120

 
 
WDS 18500-3921 : COMPONENTS
 
 
  A
B pa=215.3°
sep=14.58"
 
 
18500-3921 A
 
 
Componente originario normalizzato AB Name HD 173970 Coord arcsec 2000 185000.69-392053.8 Mag 8.33
Spectral class F2V (yellow-white) PmRA 21.00 PmDE -16.0 SAO 210609
HIP 92415 Tycho2 7916-00456-1 HD 173970 CD CD-3912933
Tycho2
Tycho2 7916-00456-1 Pflag RAmdeg 282.50295167 DEmdeg -39.34833026
PmRA 23.5 PmDE -17.6 E RAmdeg 6 E DEmdeg 8
E pmRA 1.2 E pmDE 1.2 EpRAm 1991.18 EpDEm 1990.64
Num 10 Q RAmdeg 0.8 Q DEmdeg 0.6 Q pmRA 0.8
Q pmDE 0.6 BTmag 8.814 E BTmag 0.018 VTmag 8.333
E VTmag 0.013 Prox 999 TYC T HIP 92415
CCDM RAdeg 282.50288250 DEdeg -39.34829000 EpRA 1990 1.81
EpDE 1990 1.72 E RAdeg 6.1 E DEdeg 7.7 Posflg
Corr 0.0
SAO
SAO 210609 DelFlag RA1950 PmRA1950 0.0013
DE1950 PmDE1950 -0.022 Vmag 8.2 SpType F2
Double code Source 41 CatNum 9734 DM CD-3912933
DMcomp BDsup HD 173970 M HD 0
GC RA1950rad 4.91551219 DE1950rad -0.6877706 PmRA2000 0.0013
PmDE2000 -0.023
Hipparcos
Catalog H HIP 92415 Proxy RAhms 18 50 00.69
DEdms -39 20 53.8 Vmag 8.26 VarFlag R Vmag H
RAdeg 282.503 DEdeg -39.3483 AstroRef Plx 8.09
CCDM 18500-3921 N CCDM I Nsys 1 Ncomp 1
MultFlag G Source Qual M HIP
Theta Rho HD 173970 BD
CD CD-3912933 CP Dm number -3912933 VIred 0.53
SpType F2V R SpType Coord arcsec 2000 185000.69-392053.8
Hipparcos 2
HIP 92415 Sn 7 So 1 Nc 1
RArad 4.9306053921 DErad -0.6867571994 Plx 9.02 PmRA 30.04
PmDE -15.39 E RArad 1.19 E DErad 0.72 E Plx 1.26
E pmRA 1.25 E pmDE 0.84 Hpmag 8.3659 E Hpmag 0.0023
SHp 0.016 VA 0 BV 0.456 E BV 0.015
VI 0.53
CCDM
Ccdm 18500-3921 RComp Comp A Note1
Note2 Discov num DRAs 0.62 DDEs 5.7
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.3 Sp F2 PmNote *
PmRA 15 PmDE -22 Dm number -3912933 Cat1 CD
Name2 210609 Cat2 SAO HD 173970 M HD
ADS BDS M ADS BDS N IDS IDS 18431S3928A
HIC 92415
 
 
18500-3921 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 184959.96-392105.7 Mag 11 PmRA -3.00
PmDE -24.0 Calc delta mag 2.67 Calc coord yes
CCDM
Ccdm 18500-3921 RComp Comp B Note1
Note2 Discov num WG 236 DRAs DDEs
R dRAs Year 1903 Theta 219 Rho 14.2
Obs 1 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 18431S3928B
HIC