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Doubles in session


Current system
21171-8021
I 670
HD 201230


Nearby doubles
16' : 21208-8008
TDS1124

20' : 21222-8007
LDS 736

27' : 21177-7954
GKM9480AB

34' : 21067-8042
GLI 263

46' : 21334-8002
HJ 5262

70' : 21054-8124
HDS3008

70' : 21123-8129
YMG 92

81' : 21255-8138
DEA 494AB

85' : 21188-8145
TRC 8

87' : 21008-7906
KPP 705

91' : 21232-8150
TDT2937

102' : 21257-8201
TDT2957

111' : 21211-7831
UC 4454

134' : 21160-8234
GKM9479AB

139' : 20593-7811
UC 4350AB

169' : 21182-7732
TOI1101AB

176' : 21159-8316
HJ 5233

187' : 21082-7716
TDT2777

191' : 21212-7710
KPP1119

209' : 21294-7655
KPP 494

215' : 21051-7649
UC 4374

217' : 21366-7652
KPP2099

228' : 21142-7633
TSN 196

239' : 21213-8419
HJ 5235

240' : 21345-7627
KPP2244

259' : 21201-8439
UC 4446



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.

21171-8021 I 670 (HD 201230)

 
 
21h 17m 08.25s -80° 20' 41.7" sep 0.7 mag 7.82,8.80 Sp B9/9.5V dist. 273.97 pc (893.69 l.y.)
 
 
Coord 2000 21171-8021 Discov num I   670 Comp Coord arcsec 2000 21 17 08.25 -80 20 41.7
Date first 1909 Date last 1991 Obs 8
Pa first 20 Pa last 359.9 P.A. Now (θ) 359.9°
Sep first 0.5 Sep last 0.748 Sep. Now (ρ) 0.748"
Mag pri 7.82 Mag sec 8.80 delta mag (ΔM) 0.98 Spectral class B9/9.5V (blue-white)
Pri motion ra +010 Sec motion ra +010
Pri motion dec -011 Sec motion dec -011
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 201230 Constellation Octans SAO 258886 HIP 105073
Tycho2 9469-00217-1 Gaia DR2 6348905254918711680 HD 201230 GC 29647
CP CP-80 1000 Distance 273.97 Distance ly 893.69
 
 
WDS 21171-8021 I 670 (HD 201230) : NOTES
 
 
No records found.

 
 
DISCOVERER
 
 
discov author
I Innes, R.T.A.
I MNRAS 57, 533, 1897 (data also in I__1897b,
I I__1897c)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
21171-8021 I 670 1991 8 360 0.7 7.82 8.80 B9/9.5V -80 1000 D 211708.25-802041.7

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

 
 
WDS 21171-8021 I 670 (HD 201230) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21171-8021 I 670 (HD 201230) : MEASURES
 
 
No records found.

 
 
WDS 21171-8021 (HD 201230) : VIRTUAL EYEPIECE
 
 

21171-8021 I 670A mag 7.82 Sp B9/9.5V 21171-8021 I 670B sep 0.8 P.A. 359.90 mag 8.8 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 21171-8021 (HD 201230) : ALADIN DSS IMAGE @ 21h 17m 08.25s -80° 20' 41.7"
 
 
 
 
WDS 21171-8021 I 670 (HD 201230) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21171-8021 I 670 distance=1' 21208-8008 TDS1124 distance=16' 21222-8007 LDS 736 distance=20' 21177-7954 GKM9480AB distance=27' 21067-8042 GLI 263 distance=34' 21334-8002 HJ 5262 distance=46' 21054-8124 HDS3008 distance=70' 21123-8129 YMG 92 distance=70' 21255-8138 DEA 494AB distance=81' 21255-8138 GKM9483Aa,Ab distance=81' 21188-8145 TRC 8 distance=85' 21008-7906 KPP 705 distance=87' 21232-8150 TDT2937 distance=91' 21257-8201 TDT2957 distance=102' 21211-7831 UC 4454 distance=111' 21160-8234 GKM9479AB distance=134' 20593-7811 UC 4350AB distance=139' 21182-7732 TOI1101AB distance=169' 21159-8316 HJ 5233 distance=176' 21082-7716 TDT2777 distance=187' 21212-7710 KPP1119 distance=191' 21294-7655 KPP 494 distance=209' 21051-7649 UC 4374 distance=215' 21366-7652 KPP2099 distance=217' 21142-7633 TSN 196 distance=228' 21213-8419 HJ 5235 distance=239' 21345-7627 KPP2244 distance=240' 21201-8439 UC 4446 distance=259' 21364-7608 TDT3054 distance=260' 21020-8441 R 324BC distance=262' 21020-8441 R 324AB distance=262' 21084-7559 I 257 distance=264' 21057-8443 UC 4376 distance=264' 21150-7534 JSP 823 distance=287' 21092-7525 TDT2788 distance=297' 21014-7525 HJ 5230 distance=300' 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 21171-8021 I 670 0 0.7 1
Show 21208-8008 TDS1124 180 1.3 16
Show 21222-8007 LDS 736 2 134.2 20
Show 21177-7954 GKM9480 AB 137 2.5 27
Show 21067-8042 GLI 263 247 4.5 34
Show 21334-8002 HJ 5262 92 23.8 46
Show 21054-8124 HDS3008 91 0.0 70
Show 21123-8129 YMG 92 131 0.1 70
Show 21255-8138 DEA 494 AB 124 217.5 81
Show 21255-8138 GKM9483 Aa,Ab 133 0.2 81
Show 21188-8145 TRC 8 195 4.0 85
Show 21008-7906 KPP 705 351 6.2 87
Show 21232-8150 TDT2937 297 0.6 91
Show 21257-8201 TDT2957 140 0.4 102
Show 21211-7831 UC 4454 185 75.8 111
Show 21160-8234 GKM9479 AB 125 1.3 134
Show 20593-7811 UC 4350 AB 51 16.8 139
Show 21182-7732 TOI1101 AB 236 3.6 169
Show 21159-8316 HJ 5233 268 11.7 176
Show 21082-7716 TDT2777 17 1.5 187
Show 21212-7710 KPP1119 277 8.8 191
Show 21294-7655 KPP 494 194 3.7 209
Show 21051-7649 UC 4374 329 49.2 215
Show 21366-7652 KPP2099 105 16.9 217
Show 21142-7633 TSN 196 250 0.8 228
Show 21213-8419 HJ 5235 80 3.2 239
Show 21345-7627 KPP2244 53 18.6 240
Show 21201-8439 UC 4446 95 8.2 259
Show 21364-7608 TDT3054 225 1.5 260
Show 21020-8441 R 324 BC 62 26.4 262
Show 21020-8441 R 324 AB 39 17.9 262
Show 21084-7559 I 257 313 1.9 264
Show 21057-8443 UC 4376 117 7.9 264
Show 21150-7534 JSP 823 185 2.0 287
Show 21092-7525 TDT2788 155 2.2 297
Show 21014-7525 HJ 5230 163 15.2 300

 
 
WDS 21171-8021 : COMPONENTS
 
 
  A
B pa=359.9°
sep=0.75"
 
 
21171-8021 A
 
 
Name HD 201230 Coord arcsec 2000 211708.25-802041.7 Mag 7.82 Spectral class B9/9.5V (blue-white)
PmRA 10.00 PmDE -11.0 SAO 258886 HIP 105073
Tycho2 9469-00217-1 HD 201230 GC 29647 CP CP-80 1000
Tycho2
Tycho2 9469-00217-1 Pflag RAmdeg 319.28435772 DEmdeg -80.34487444
PmRA 10.1 PmDE -11.2 E RAmdeg 4 E DEmdeg 4
E pmRA 1.1 E pmDE 1.2 EpRAm 1991.33 EpDEm 1991.44
Num 15 Q RAmdeg 0.5 Q DEmdeg 1.5 Q pmRA 0.5
Q pmDE 1.5 BTmag 7.613 E BTmag 0.015 VTmag 7.559
E VTmag 0.011 Prox 999 TYC T HIP 105073
CCDM AB RAdeg 319.28421806 DEdeg -80.34484861 EpRA 1990 1.67
EpDE 1990 1.72 E RAdeg 4.4 E DEdeg 4.2 Posflg P
Corr 0.1
SAO
SAO 258886 DelFlag RA1950 PmRA1950 0.0087
DE1950 PmDE1950 -0.023 Vmag 7.4 SpType B9
Double code Source 70 CatNum 29647 DM CP-80 1000
DMcomp BDsup HD 201230 M HD 0
GC 29647 RA1950rad 5.54221447 DE1950rad -1.40592059 PmRA2000 0.0055
PmDE2000 -0.027
Hipparcos
Catalog H HIP 105073 Proxy H RAhms 21 17 08.22
DEdms -80 20 41.6 Vmag 7.47 VarFlag R Vmag H
RAdeg 319.284 DEdeg -80.3449 AstroRef A Plx 4.18
CCDM 13.36 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 358 Rho 0.708 HD BD
CD CP CP-80 1000 Dm number -80 1000 VIred 0.06
SpType B9/B9.5V R SpType Coord arcsec 2000 211708.22-802041.6
Hipparcos 2
HIP 105073 Sn 15 So 3 Nc 2
RArad 5.5725610747 DErad -1.4022828016 Plx 3.65 PmRA 12.84
PmDE -11.14 E RArad 0.51 E DErad 0.78 E Plx 0.76
E pmRA 0.74 E pmDE 1.01 Hpmag E Hpmag 0.0009
SHp 0.011 VA 0 BV 0.037 E BV 0.01
VI 0.05
CCDM
Ccdm 21171-8021 RComp Comp A Note1
Note2 Discov num DRAs 2.31 DDEs 17.9
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.9 Sp B9 PmNote *
PmRA 15 PmDE -12 Dm number -80 1000 Cat1 CPD
Name2 258886 Cat2 SAO HD 201230 M HD
ADS BDS M ADS BDS N IDS IDS 21030S8045A
HIC 105073
 
 
21171-8021 B
 
 
Coord arcsec 2000 211708.25-802041.0 Mag 8.8 PmRA 10.00 PmDE -11.0
Delta magnitude 0.98 Coordinate calculated yes
CCDM
Ccdm 21171-8021 RComp Comp B Note1
Note2 Discov num I 670 DRAs DDEs
R dRAs Year 1915 Theta 011 Rho 0.5
Obs 4 Vmag 8.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 21030S8045B
HIC 105073