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Current system
11188-3121
I 505
HD 98380


Nearby doubles
22' : 11191-3100
I 506

24' : 11172-3110
RSS 260

41' : 11218-3107
SKF1901

56' : 11225-3054
HJ 4428

59' : 11164-3032
DAW 100

61' : 11214-3212
RST2742

62' : 11230-3054
HJ 4430

63' : 11235-3135
RST2745

63' : 11170-3023
DAW 101

70' : 11219-3024
LDS5729

77' : 11240-3045
RUZ 7

78' : 11161-3011
RSS 259

80' : 11167-3007
I 1537AB

81' : 11125-3118
B 2271

86' : 11234-3224
LDS4092

89' : 11250-3200
UC 2133AB

91' : 11118-3110
LDS5728

98' : 11118-3045
BRT2985

101' : 11229-3247
JSP 484AB

101' : 11249-3225
TDS7846

104' : 11144-2954
HJ 4418

109' : 11105-3146
HDS1592

111' : 11270-3157
UC 2139

112' : 11214-2936
HDS1616

113' : 11275-3115
TDS7865

113' : 11218-2936
LDS4089



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.

11188-3121 I 505 (HD 98380)

 
 
11h 18m 45.98s -31° 21' 25.3" P.A. 284.00 sep 1.6 mag 8.37,10.93 Sp A3V dist. 251.89 pc (821.67 l.y.)
 
 
Coord 2000 11188-3121 Discov num I   505 Comp Coord arcsec 2000 11 18 45.98 -31 21 25.3
Date first 1909 Date last 2016 Obs 11
Pa first 280 Pa last 284.3 P.A. Now (θ) 284.3°
Sep first 1.8 Sep last 1.64 Sep. Now (ρ) 1.64"
Mag pri 8.37 Mag sec 10.93 delta mag (ΔM) 2.56 Spectral class A3V (white)
Pri motion ra -031 Sec motion ra -035
Pri motion dec +001 Sec motion dec +003
Notes
rPM=0.127 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 98380 Constellation Hydra SAO 202311 HIP 55240
Tycho2 7202-00299-1 Gaia DR2 5403954244402085248 HD 98380 CD CD-30 9101
CP CP-30 3310 Distance 251.89 Distance ly 821.67
 
 
WDS 11188-3121 I 505 (HD 98380) : 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
11188-3121 I 505 1991 9 284 1.6 8.37 10.93 A3V D 111845.98-312125.3
11188-3121 I 505 2015 10 284 1.6 8.37 10.93 A3V 111845.98-312125.3
11188-3121 I 505 2016 11 284 1.6 8.37 10.93 A3V 111845.98-312125.3

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

 
 
WDS 11188-3121 I 505 (HD 98380) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 11188-3121 I 505 (HD 98380) : MEASURES
 
 
No records found.

 
 
WDS 11188-3121 (HD 98380) : VIRTUAL EYEPIECE
 
 

11188-3121 I 505A mag 8.37 Sp A3V 11188-3121 I 505B sep 1.4 P.A. 286.60 mag 10.93 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 11188-3121 (HD 98380) : ALADIN DSS IMAGE @ 11h 18m 45.98s -31° 21' 25.3"
 
 
 
 
WDS 11188-3121 I 505 (HD 98380) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

11188-3121 I 505 distance=1' 11191-3100 I 506 distance=22' 11172-3110 RSS 260 distance=24' 11218-3107 SKF1901 distance=41' 11225-3054 HJ 4428 distance=56' 11164-3032 DAW 100 distance=59' 11214-3212 RST2742 distance=61' 11230-3054 HJ 4430 distance=62' 11235-3135 RST2745 distance=63' 11170-3023 DAW 101 distance=63' 11219-3024 LDS5729 distance=70' 11240-3045 RUZ 7 distance=77' 11161-3011 RSS 259 distance=78' 11167-3007 I 1537AB distance=80' 11167-3007 HJ 4422AC distance=80' 11125-3118 B 2271 distance=81' 11234-3224 LDS4092 distance=86' 11250-3200 CHR 242Aa,Ab distance=89' 11250-3200 UC 2133AB distance=89' 11118-3110 LDS5728 distance=91' 11118-3045 BRT2985 distance=98' 11229-3247 JSP 484AB distance=101' 11249-3225 TDS7846 distance=101' 11144-2954 HJ 4418 distance=104' 11105-3146 HDS1592 distance=109' 11270-3157 UC 2139 distance=111' 11214-2936 HDS1616 distance=112' 11275-3115 TDS7865 distance=113' 11218-2936 LDS4089 distance=113' 11241-3255 BRT1669 distance=115' 11264-3223 RST2748 distance=116' 11273-3044 I 76 distance=116' 11282-3114 HJ 4439 distance=121' 11219-3318 HDS1617 distance=124' 11106-3234 I 213AB distance=127' 11106-3234 I 213AC distance=127' 11286-3136 TDS 636 distance=128' 11093-3208 LDS5726 distance=130' 11277-3022 UC 2142 distance=130' 11273-3242 RST2750 distance=135' 11105-3250 RST2727 distance=138' 11296-3133 BRT2987 distance=139' 11247-2925 UC 2131 distance=140' 11108-3300 RST2728 distance=142' 11299-3123 RUZ 1 distance=143' 11097-2953 LDS5727 distance=147' 11092-3002 WBB 2 distance=147' 11295-3031 SKF1218 distance=148' 11071-3154 KPP 544 distance=153' 11301-3038 UC 2155 distance=153' 11100-2936 HJ 4412 distance=155' 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 11188-3121 I 505 284 1.6 1
Show 11191-3100 I 506 173 0.8 22
Show 11172-3110 RSS 260 236 1.7 24
Show 11218-3107 SKF1901 228 43.1 41
Show 11225-3054 HJ 4428 134 23.1 56
Show 11164-3032 DAW 100 327 1.9 59
Show 11214-3212 RST2742 113 0.8 61
Show 11230-3054 HJ 4430 271 17.3 62
Show 11235-3135 RST2745 192 0.3 63
Show 11170-3023 DAW 101 284 3.7 63
Show 11219-3024 LDS5729 137 78.2 70
Show 11240-3045 RUZ 7 135 6.6 77
Show 11161-3011 RSS 259 74 11.7 78
Show 11167-3007 I 1537 AB 21 1.0 80
Show 11167-3007 HJ 4422 AC 348 9.6 80
Show 11125-3118 B 2271 284 3.2 81
Show 11234-3224 LDS4092 121 18.9 86
Show 11250-3200 CHR 242 Aa,Ab 72 0.1 89
Show 11250-3200 UC 2133 AB 192 57.1 89
Show 11118-3110 LDS5728 192 105.1 91
Show 11118-3045 BRT2985 253 4.5 98
Show 11229-3247 JSP 484 AB 143 2.7 101
Show 11249-3225 TDS7846 188 1.4 101
Show 11144-2954 HJ 4418 255 7.4 104
Show 11105-3146 HDS1592 242 0.6 109
Show 11270-3157 UC 2139 143 34.7 111
Show 11214-2936 HDS1616 181 0.3 112
Show 11275-3115 TDS7865 261 0.5 113
Show 11218-2936 LDS4089 106 22.4 113
Show 11241-3255 BRT1669 143 3.8 115
Show 11264-3223 RST2748 21 1.4 116
Show 11273-3044 I 76 50 7.2 116
Show 11282-3114 HJ 4439 109 18.4 121
Show 11219-3318 HDS1617 103 0.4 124
Show 11106-3234 I 213 AB 81 0.2 127
Show 11106-3234 I 213 AC 170 0.1 127
Show 11286-3136 TDS 636 190 1.1 128
Show 11093-3208 LDS5726 112 30.1 130
Show 11277-3022 UC 2142 109 51.6 130
Show 11273-3242 RST2750 97 1.5 135
Show 11105-3250 RST2727 9 2.4 138
Show 11296-3133 BRT2987 215 3.8 139
Show 11247-2925 UC 2131 95 6.9 140
Show 11108-3300 RST2728 127 0.9 142
Show 11299-3123 RUZ 1 79 22.6 143
Show 11097-2953 LDS5727 107 132.9 147
Show 11092-3002 WBB 2 16 0.3 147
Show 11295-3031 SKF1218 346 3.7 148
Show 11071-3154 KPP 544 249 5.1 153
Show 11301-3038 UC 2155 321 8.0 153
Show 11100-2936 HJ 4412 266 12.6 155

 
 
WDS 11188-3121 : COMPONENTS
 
 
  A
B pa=286.6°
sep=1.42"
 
 
11188-3121 A
 
 
Componente originario normalizzato AB Name HD 98380 Coord arcsec 2000 111845.98-312125.3 Mag 8.37
Spectral class A3V (white) PmRA -31.00 PmDE 1.0 SAO 202311
HIP 55240 Tycho2 7202-00299-1 HD 98380 CD CD-30 9101
CP CP-30 3310
Tycho2
Tycho2 7202-00299-1 Pflag RAmdeg 169.69157910 DEmdeg -31.35702410
PmRA -30.9 PmDE 0.8 E RAmdeg 6 E DEmdeg 7
E pmRA 1.5 E pmDE 1.5 EpRAm 1991.11 EpDEm 1990.93
Num 7 Q RAmdeg 2.0 Q DEmdeg 0.4 Q pmRA 1.9
Q pmDE 0.4 BTmag 8.537 E BTmag 0.017 VTmag 8.373
E VTmag 0.014 Prox 16 TYC T HIP 55240
CCDM A RAdeg 169.69166333 DEdeg -31.35702583 EpRA 1990 1.64
EpDE 1990 1.65 E RAdeg 6.4 E DEdeg 7.1 Posflg P
Corr 0.2
SAO
SAO 202311 DelFlag RA1950 PmRA1950 -0.0039
DE1950 PmDE1950 0.014 Vmag 8.4 SpType A2
Double code Source 40 CatNum 5570 DM CD-30 9101
DMcomp BDsup HD 98380 M HD 0
GC RA1950rad 2.95104602 DE1950rad -0.54250599 PmRA2000 -0.0037
PmDE2000 0.018
Hipparcos
Catalog H HIP 55240 Proxy H RAhms 11 18 46.00
DEdms -31 21 25.3 Vmag 8.32 VarFlag R Vmag H
RAdeg 169.692 DEdeg -31.357 AstroRef A Plx 5.96
CCDM 11188-3121 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 283 Rho 1.647 HD 98380 BD
CD CD-30 9101 CP CP-30 3310 Dm number -30 9101 VIred 0.13
SpType A3V R SpType Coord arcsec 2000 111846.00-312125.3
Hipparcos 2
HIP 55240 Sn 15 So 3 Nc 2
RArad 2.9616783895 DErad -0.5472833106 Plx 3.97 PmRA -33.64
PmDE 1.85 E RArad 0.78 E DErad 0.74 E Plx 1.01
E pmRA 0.89 E pmDE 0.72 Hpmag 8.3634 E Hpmag 0.0017
SHp 0.014 VA 0 BV 0 E BV 0.495
VI 0.13
CCDM
Ccdm 11188-3121 RComp Comp A Note1
Note2 Discov num DRAs -2.12 DDEs -24.3
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.5 Sp A2 PmNote *
PmRA -50 PmDE 14 Dm number -30 9101 Cat1 CD
Name2 202311 Cat2 SAO HD 98380 M HD
ADS BDS M ADS BDS N IDS IDS 11139S3049A
HIC 55240
 
 
11188-3121 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 111845.87-312124.9 Mag 10.93 PmRA -35.00
PmDE 3.0 Calc delta mag 2.56 Calc coord yes
CCDM
Ccdm 11188-3121 RComp Comp B Note1
Note2 Discov num I 505 DRAs DDEs
R dRAs Year 1911 Theta 281 Rho 1.6
Obs 5 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 11139S3049B
HIC 55240