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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

34' : 21067-8042
GLI 263

46' : 21334-8002
HJ 5262

70' : 21054-8124
HDS3008

70' : 21123-8129
YMG 92

81' : 21255-8138
DEA 494

85' : 21188-8145
TRC 8

87' : 21008-7906
KPP 705

91' : 21232-8150
TDT2937

102' : 21257-8201
TDT2957

111' : 21211-7831
UC 4454

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

260' : 21364-7608
TDT3054

262' : 21020-8441
R 324AB



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.

 
 
REFERENCES
 
 
refcode metd author reference
I__1895 Ma - Innes, R.T.A. 1895MNRAS..55..312I
I__1895 +Mb MNRAS 55, 312,544, 1895
I__1896 Mb - Innes, R.T.A. 1896JBAA....6..261I
I__1896 J. British Astron. Assoc. 6, 261, 1896
I__1897a Ma - Innes, R.T.A. 1897MNRAS..57..533I
I__1897a MNRAS 57, 533, 1897 (data also in I__1897b, 1897AN....143..171I
I__1897a I__1897c) 1897AN....144...89I
I__1897b Ma - Innes, R.T.A. 1897AN....143..171I
I__1897b AN 143, 171, 1897
I__1897c Ma - Innes, R.T.A. 1897AN....144...89I
I__1897c AN 144, 89, 1897
I__1897d Ma - Innes, R.T.A. 1897AN....145...93I
I__1897d AN 145, 93, 1897
I__1897e Ma - Innes, R.T.A. 1897MNRAS..57..456I
I__1897e +Mb MNRAS 57, 456, 1897
I__1897f Ma - Innes, R.T.A. 1897MNRAS..58...48I
I__1897f MNRAS 58, 48, 1897
I__1897g Ma - Innes, R.T.A. 1897AJ.....18...65I
I__1897g AJ 18, 65, 1897
I__1898 Ma - Innes, R.T.A. 1898AN....146..369I
I__1898 AN 146, 369, 1898
I__1899 Ma - Innes, R.T.A. 1899QB4.C22v2......
I__1899 Ann. Cape Obs. 2, Pt.2, 1899 (Innes Reference Catalog)
I__1901 Ma - Innes, R.T.A. 1901MNRAS..61..575.
I__1901 MNRAS 61, 575, 1901 (data also in I__1905) 1905AnCap...2....4I
I__1902a Ma - Innes, R.T.A. 1902MNRAS..62..470I
I__1902a MNRAS 62, 470, 1902 (data also in I__1905) 1905AnCap...2....4I
I__1902b Ma - Innes, R.T.A. 1902MNRAS..63...76I
I__1902b MNRAS 63, 76, 1902 (some data also in I__1905) 1905AnCap...2....4I
I__1903 - Innes, R.T.A. 1903MNRAS..64..130I
I__1903 MNRAS 64, 130, 1903 (data also in I__1905) 1905AnCap...2....4I
I__1903b Ma - Innes, R.T.A. 1903Obs....26..285I
I__1903b Obs 26, 285, 1903 (some data also in I__1905) 1905AnCap...2....4I
I__1905 Ma - Innes, R.T.A. 1905AnCap...2....4I
I__1905 Ann. Cape Obs. 2, Pt.4, 1905
I__1907 Ma - Innes, R.T.A. 1907Obs....30...61I
I__1907 Obs 30, 61, 1907
I__1908 - Innes, R.T.A. 1908Obs....31..289I
I__1908 Obs 31, 289, 1908 (measures also in I__1909)
I__1909 Ma - Innes, R.T.A. .
I__1909 Transvaal Obs. Circ. 1, 1, 1909
I__1910 Ma - Innes, R.T.A. .
I__1910 Transvaal Obs. Circ. 1, 21, 1910
I__1911 Ma - Innes, R.T.A. .
I__1911 Transvaal Obs. Circ. 1, 61, 1911
I__1912 Ma - Innes, R.T.A. .
I__1912 Transvaal Obs. Circ. 1, 111, 1912
I__1913a Ma - Innes, R.T.A. 1913CiUO....4...31.
I__1913a Union Obs. Johannesburg Circ. 4, 31, 1913
I__1913b Ma - Innes, R.T.A. (measure by Simpkins, R.P.) 1913CiUO....4...31.
I__1913b Union Obs. Johannesburg Circ. 4, 31, 1913
I__1914 Ma - Innes, R.T.A. 1914CiUO...14...97.
I__1914 Union Obs. Johannesburg Circ. 14, 97, 1914
I__1915a Ma - Innes, R.T.A. 1915CiUO...24..185.
I__1915a Union Obs. Johannesburg Circ. 24, 185, 1915
I__1915b Ma - Innes, R.T.A. (measure by Cox, G.W.) 1915CiUO...24..185.
I__1915b Union Obs. Johannesburg Circ. 24, 185, 1915
I__1915c Ma - Innes, R.T.A. (measure by Johnson, E.L.) 1915CiUO...24..185.
I__1915c Union Obs. Johannesburg Circ. 24, 185, 1915
I__1915d Ma - Innes, R.T.A. (measure by Simpkins, R.P.) 1915CiUO...24..185.
I__1915d Union Obs. Johannesburg Circ. 24, 185, 1915
I__1915e - Innes, R.T.A. 1915Obs....38..221I
I__1915e Obs 38, 221, 1915 (measures also in I__1916) 1916CiUO...33..249I
I__1915f - Innes, R.T.A. 1915Obs....38..333I
I__1915f Obs 38, 333, 1915 (measures also in I__1915) 1915CiUO...24..185I
I__1916a Ma - Innes, R.T.A. 1916CiUO...33..249I
I__1916a Union Obs. Johannesburg Circ. 33, 249, 1916
I__1916b Ma - Innes, R.T.A. (measure by Simpkins, R.P.) 1916CiUO...33..249I
I__1916b Union Obs. Johannesburg Circ. 33, 249, 1916
I__1916c Ma - Innes, R.T.A. (measure by van der Spuy, K.) 1916CiUO...33..249I
I__1916c Union Obs. Johannesburg Circ. 33, 249, 1916
I__1917a Ma - Innes, R.T.A. 1917CiUO...37..285I
I__1917a Union Obs. Johannesburg Circ. 37, 285, 1917
I__1917b Ma - Innes, R.T.A. (measure by Johnson, E.L.) 1917CiUO...37..285I
I__1917b Union Obs. Johannesburg Circ. 37, 285, 1917
I__1917c Ma - Innes, R.T.A. (measure by van der Spuy, K.) 1917CiUO...37..285I
I__1917c Union Obs. Johannesburg Circ. 37, 285, 1917
I__1917d Ma - Innes, R.T.A. (measure by Worssell, W.M.) 1917CiUO...37..285I
I__1917d Union Obs. Johannesburg Circ. 37, 285, 1917
I__1918 Ma - Innes, R.T.A. 1918CiUO...41..339I
I__1918 Union Obs. Johannesburg Circ. 41, 339, 1918
I__1927a Ma - Innes, R.T.A. 1927sdsc.book.....I
I__1927a +Po Southern Double Star Cat. 1927
I__1927b Ma - Innes, R.T.A. & van den Bos, W.H. 1927sdsc.book.....I
I__1927b Southern Double Star Cat. 1927
I__1932A Ma - Innes, R.T.A. 1932QB821.A43......
I__1932A cited in ADS (Aitken Double Star Cat.), 1932
I__1948a Ma - Innes, R.T.A. 1948CiUO..106..193I
I__1948a +Po Union Obs. Johannesburg Circ. 106, 193, 1948
I__1948b Ma - Innes, R.T.A. (measure by Simpkins, R.P.) 1948CiUO..106..193I
I__1948b Union Obs. Johannesburg Circ. 106, 193, 1948
I__9999 Ma - Innes, R.T.A. ...................
I__9999 +Mb 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
21171-8021 I 670 1991 8 360 0.7 7.82 8.80 B9/9.5V 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. 360.00 mag 8.8 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 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' 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 494 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' 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 0.7 1
Show 21208-8008 TDS1124 180 1.3 16
Show 21222-8007 LDS 736 2 134.2 20
Show 21067-8042 GLI 263 244 4.8 34
Show 21334-8002 HJ 5262 92 24.2 46
Show 21054-8124 HDS3008 62 0.0 70
Show 21123-8129 YMG 92 131 0.1 70
Show 21255-8138 DEA 494 124 217.5 81
Show 21188-8145 TRC 8 195 4.0 85
Show 21008-7906 KPP 705 351 6.2 87
Show 21232-8150 TDT2937 182 3.0 91
Show 21257-8201 TDT2957 140 0.4 102
Show 21211-7831 UC 4454 185 75.8 111
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 70 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 15.5 300

 
 
WDS 21171-8021 : COMPONENTS
 
 
  A
B pa=360.0°
sep=0.75"
 
 
21171-8021 A
 
 
Componente originario normalizzato AB 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 21171-8021 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 358 Rho 0.708 HD 201230 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 7.485 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
 
 
Componente originario normalizzato AB Coord arcsec 2000 211708.25-802041.0 Mag 8.8 PmRA 10.00
PmDE -11.0 Calc delta mag 0.98 Calc coord 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