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Doubles in session


Current system
18433-2225
I 1381
HD 172854


Nearby doubles
16' : 18440-2237
RST5453

17' : 18437-2240
DON 919AB

33' : 18411-2236
ARA1896

42' : 18463-2224
SEE 360

46' : 18421-2307
SHN 38

54' : 18444-2316
ARA2246

55' : 18439-2130
KPP4118

56' : 18397-2249
SHN 231

56' : 18451-2315
CBL 173

58' : 18472-2246
DON 923

59' : 18407-2139
RST5122

61' : 18425-2323
SHN 233

62' : 18442-2325
RST3195

68' : 18419-2329
ARA2243

70' : 18390-2259
ARA2241

72' : 18427-2336
BRT1542

73' : 18452-2117
ARA1553

74' : 18401-2322
SHN 232

74' : 18484-2205
ARA1899

75' : 18386-2149
J 1633AB

75' : 18487-2230
ARA1900

79' : 18381-2156
ARA1895

80' : 18377-2243
ARA1894

81' : 18416-2108
KPP 422

81' : 18377-2244
ARA1893

81' : 18406-2115
ARA1552



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.

18433-2225 I 1381 (HD 172854)

 
 
18h 43m 20.25s -22° 24' 39.0" P.A. 37.00 sep 1.3 mag 7.78,11.18 Sp B4III dist. 495.05 pc (1614.85 l.y.)
 
 
Coord 2000 18433-2225 Discov num I  1381 Comp Coord arcsec 2000 18 43 20.25 -22 24 39.0
Date first 1925 Date last 1991 Obs 7
Pa first 35 Pa last 36.7 P.A. Now (θ) 36.7°
Sep first 0.9 Sep last 1.26 Sep. Now (ρ) 1.26"
Mag pri 7.78 Mag sec 11.18 delta mag (ΔM) 3.4 Spectral class B4III (blue-white)
Pri motion ra +000 Sec motion ra +001
Pri motion dec -009 Sec motion dec -006
Notes
rPM=0.351
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 172854 Constellation Sagittarius SAO 187185 HIP 91826
Tycho2 6292-00821-1 Gaia DR2 4078536506616158208 HD 172854 BD BD-22 4835
CD CD-2213233 Distance 495.05 Distance ly 1614.85
 
 
WDS 18433-2225 I 1381 (HD 172854) : 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
18433-2225 I 1381 1991 7 37 1.3 7.78 11.18 B4III 184320.25-222439.0

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

 
 
WDS 18433-2225 I 1381 (HD 172854) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18433-2225 I 1381 (HD 172854) : MEASURES
 
 
No records found.

 
 
WDS 18433-2225 (HD 172854) : VIRTUAL EYEPIECE
 
 

18433-2225 I 1381A mag 7.78 Sp B4III 18433-2225 I 1381B sep 1.2 P.A. 34.60 mag 11.18 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 18433-2225 (HD 172854) : ALADIN DSS IMAGE @ 18h 43m 20.25s -22° 24' 39.0"
 
 
 
 
WDS 18433-2225 I 1381 (HD 172854) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18433-2225 I 1381 distance=0' 18440-2237 RST5453 distance=16' 18437-2240 DON 919AB distance=17' 18437-2240 DON 919AC distance=17' 18411-2236 ARA1896 distance=33' 18463-2224 SEE 360 distance=42' 18421-2307 SHN 38 distance=46' 18444-2316 ARA2246 distance=54' 18439-2130 KPP4118 distance=55' 18397-2249 SHN 231 distance=56' 18451-2315 CBL 173 distance=56' 18472-2246 DON 923 distance=58' 18407-2139 RST5122 distance=59' 18425-2323 SHN 233 distance=61' 18442-2325 RST3195 distance=62' 18419-2329 ARA2243 distance=68' 18390-2259 ARA2241 distance=70' 18427-2336 BRT1542 distance=72' 18452-2117 ARA1553 distance=73' 18401-2322 SHN 232 distance=74' 18484-2205 ARA1899 distance=74' 18386-2149 J 1633BC distance=75' 18386-2149 J 1633AB distance=75' 18487-2230 ARA1900 distance=75' 18381-2156 ARA1895 distance=79' 18377-2243 ARA1894 distance=80' 18416-2108 KPP 422 distance=81' 18377-2244 ARA1893 distance=81' 18406-2115 ARA1552 distance=81' 18423-2344 ARA2244 distance=82' 18471-2331 LDS4798 distance=84' 18411-2345 ARA2242 distance=86' 18431-2051 ARA1159 distance=94' 18474-2108 B 1889 distance=95' 18387-2114 ARA1551 distance=97' 18379-2124 OCC 33 distance=97' 18375-2130 ARA1548 distance=99' 18395-2101 RST5121AB distance=100' 18395-2101 HJ 2833AC distance=100' 18385-2110 B 1888 distance=101' 18389-2103 WSI 90AB distance=103' 18389-2103 TNN 11AC distance=103' 18389-2103 TNN 11AD distance=103' 18398-2052 OCC1078 distance=105' 18361-2154 ARA1546 distance=106' 18508-2210 BU 1300 distance=106' 18509-2235 DON 927AB distance=106' 18509-2235 DON 927AC distance=106' 18462-2046 I 1030 distance=107' 18510-2208 KPP 427 distance=108' 18360-2146 ARA1545 distance=109' 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 18433-2225 I 1381 37 1.3
Show 18440-2237 RST5453 211 0.1 16
Show 18437-2240 DON 919 AB 80 3.4 17
Show 18437-2240 DON 919 AC 306 14.9 17
Show 18411-2236 ARA1896 327 12.3 33
Show 18463-2224 SEE 360 217 14.7 42
Show 18421-2307 SHN 38 33 0.2 46
Show 18444-2316 ARA2246 194 12.1 54
Show 18439-2130 KPP4118 341 3.9 55
Show 18397-2249 SHN 231 -1 0.1 56
Show 18451-2315 CBL 173 94 25.2 56
Show 18472-2246 DON 923 348 0.6 58
Show 18407-2139 RST5122 189 2.1 59
Show 18425-2323 SHN 233 -1 0.5 61
Show 18442-2325 RST3195 191 1.2 62
Show 18419-2329 ARA2243 105 8.6 68
Show 18390-2259 ARA2241 114 7.3 70
Show 18427-2336 BRT1542 282 6.4 72
Show 18452-2117 ARA1553 273 10.1 73
Show 18401-2322 SHN 232 -1 0.1 74
Show 18484-2205 ARA1899 261 10.9 74
Show 18386-2149 J 1633 BC 149 7.5 75
Show 18386-2149 J 1633 AB 143 36.8 75
Show 18487-2230 ARA1900 103 12.0 75
Show 18381-2156 ARA1895 26 16.0 79
Show 18377-2243 ARA1894 270 7.3 80
Show 18416-2108 KPP 422 299 4.7 81
Show 18377-2244 ARA1893 137 12.5 81
Show 18406-2115 ARA1552 287 12.6 81
Show 18423-2344 ARA2244 225 10.4 82
Show 18471-2331 LDS4798 241 5.7 84
Show 18411-2345 ARA2242 118 6.6 86
Show 18431-2051 ARA1159 84 11.7 94
Show 18474-2108 B 1889 218 0.8 95
Show 18387-2114 ARA1551 137 6.1 97
Show 18379-2124 OCC 33 -1 0.1 97
Show 18375-2130 ARA1548 336 14.8 99
Show 18395-2101 RST5121 AB 21 4.2 100
Show 18395-2101 HJ 2833 AC 314 21.8 100
Show 18385-2110 B 1888 302 4.8 101
Show 18389-2103 WSI 90 AB 138 0.0 103
Show 18389-2103 TNN 11 AC 340 5.0 103
Show 18389-2103 TNN 11 AD 30 6.4 103
Show 18398-2052 OCC1078 -1 0.7 105
Show 18361-2154 ARA1546 173 10.4 106
Show 18508-2210 BU 1300 254 18.0 106
Show 18509-2235 DON 927 AB 68 3.3 106
Show 18509-2235 DON 927 AC 8 9.1 106
Show 18462-2046 I 1030 161 5.9 107
Show 18510-2208 KPP 427 235 3.7 108
Show 18360-2146 ARA1545 203 12.9 109

 
 
WDS 18433-2225 : COMPONENTS
 
 
  A
B pa=34.6°
sep=1.23"
 
 
18433-2225 A
 
 
Componente originario normalizzato AB Name HD 172854 Coord arcsec 2000 184320.25-222439.0 Mag 7.78
Spectral class B4III (blue-white) PmRA 0.00 PmDE -9.0 SAO 187185
HIP 91826 Tycho2 6292-00821-1 HD 172854 BD BD-22 4835
CD CD-2213233
Tycho2
Tycho2 6292-00821-1 Pflag RAmdeg 280.83436196 DEmdeg -22.41081987
PmRA 0.3 PmDE -8.9 E RAmdeg 4 E DEmdeg 6
E pmRA 0.9 E pmDE 0.9 EpRAm 1991.49 EpDEm 1990.84
Num 16 Q RAmdeg 1.5 Q DEmdeg 1.3 Q pmRA 1.4
Q pmDE 1.4 BTmag 7.969 E BTmag 0.016 VTmag 7.785
E VTmag 0.011 Prox 13 TYC T HIP 91826
CCDM A RAdeg 280.83436139 DEdeg -22.41079917 EpRA 1990 1.85
EpDE 1990 1.76 E RAdeg 4.3 E DEdeg 5.9 Posflg
Corr 0.1
SAO
SAO 187185 DelFlag RA1950 PmRA1950 -0.0025
DE1950 PmDE1950 -0.004 Vmag 7.6 SpType B9
Double code Source 25 CatNum 12996 DM CD-2213233
DMcomp BDsup HD 172854 M HD 0
GC RA1950rad 4.88832338 DE1950rad -0.39202228 PmRA2000 -0.0025
PmDE2000 -0.004
Hipparcos
Catalog H HIP 91826 Proxy H RAhms 18 43 20.25
DEdms -22 24 38.9 Vmag 7.7 VarFlag 1 R Vmag G
RAdeg 280.834 DEdeg -22.4108 AstroRef A Plx 1.66
CCDM 18433-2225 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual B M HIP AB
Theta 36 Rho 1.266 HD 172854 BD BD-22 4835
CD CD-2213233 CP Dm number -22 4835 VIred 0.25
SpType B3III R SpType Coord arcsec 2000 184320.25-222438.9
Hipparcos 2
HIP 91826 Sn 15 So 3 Nc 2
RArad 4.9014843037 DErad -0.391142298 Plx 2.02 PmRA -0.57
PmDE -5.62 E RArad 0.8 E DErad 0.37 E Plx 0.81
E pmRA 1.07 E pmDE 0.59 Hpmag 7.7627 E Hpmag 0.0025
SHp 0.016 VA 2 BV 0.229 E BV 0.002
VI 0.25
CCDM
Ccdm 18433-2225 RComp Comp A Note1
Note2 Discov num DRAs 2.19 DDEs 22.0
R dRAs 41 Year Theta Rho
Obs 2 Vmag 7.7 Sp B9 PmNote *
PmRA -35 PmDE -4 Dm number -22 4835 Cat1 BD
Name2 187185 Cat2 SAO HD 172854 M HD
ADS BDS A11595 M ADS BDS N IDS IDS 18373S2230A
HIC 91826
 
 
18433-2225 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 184320.30-222438.0 Mag 11.18 PmRA 1.00
PmDE -6.0 Calc delta mag 3.4 Calc coord yes
CCDM
Ccdm 18433-2225 RComp Comp B Note1
Note2 Discov num I 1381 DRAs DDEs
R dRAs Year 1925 Theta 035 Rho 1.0
Obs 3 Vmag 10.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11595 M ADS BDS N IDS IDS 18373S2230B
HIC 91826