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Doubles in session


Current system
12420-3330
I 1557 AB


Nearby doubles
20' : 12433-3341
I 1558

45' : 12389-3308
UC 2377

50' : 12445-3252
RST1689

59' : 12428-3428
RST2810

60' : 12463-3307
SKF1947

62' : 12468-3319
HDO 219

70' : 12394-3228
TDS8473AB

74' : 12361-3335
LDS5756

79' : 12360-3307
HJ 4532

82' : 12483-3309
SKF1949

86' : 12407-3455
GRV1275

96' : 12492-3303
I 1560

97' : 12448-3500
TDS8510AB

98' : 12432-3506
TDS8498

99' : 12390-3200
TOI 758

99' : 12371-3213
KPP3036

103' : 12369-3211
I 1222AB

104' : 12497-3406
DAM 710AB

113' : 12507-3400
SEE 163

115' : 12356-3453
LDS 413AB

117' : 12461-3146
B 232

119' : 12474-3154
TDS8522

120' : 12494-3446
SEE 162

121' : 12487-3458
RST2817

123' : 12517-3328
I 1561

123' : 12515-3400
RST2820



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.

12420-3330 I 1557 AB

 
 
12h 41m 58.17s -33° 30' 20.9" P.A. 94.00 sep 3.2 mag 9.30,13.70 Sp A2
 
 
Coord 2000 12420-3330 Discov num I  1557 Comp AB Coord arcsec 2000 12 41 58.17 -33 30 20.9
Date first 1927 Date last 2016 Obs 5
Pa first 95 Pa last 94.2 P.A. Now (θ) 94.2°
Sep first 3.0 Sep last 3.215 Sep. Now (ρ) 3.215"
Mag pri 9.30 Mag sec 13.70 delta mag (ΔM) 4.4 Spectral class A2 (white)
Pri motion ra -030 Sec motion ra
Pri motion dec +001 Sec motion dec
Notes W
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hydra SAO 203721 Tycho2 7251-01278-1 HD 110386
 
 
WDS 12420-3330 I 1557 AB : 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
12420-3330 I 1557 AB 2015 4 94 3.2 9.30 13.70 A2 W 124158.17-333020.9
12420-3330 I 1557 AB 2016 5 94 3.2 9.30 13.70 A2 W 124158.17-333020.9

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

 
 
WDS 12420-3330 I 1557 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 12420-3330 I 1557 AB : MEASURES
 
 
No records found.

 
 
WDS 12420-3330 : VIRTUAL EYEPIECE
 
 

12420-3330 I 1557A mag 9.3 Sp A2 12420-3330 I 1557B sep 2.7 P.A. 95.00 mag 13.7 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 12420-3330 : ALADIN DSS IMAGE @ 12h 41m 58.17s -33° 30' 20.9"
 
 
 
 
WDS 12420-3330 I 1557 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

12420-3330 I 1557AB distance=0' 12433-3341 I 1558 distance=20' 12389-3308 UC 2377 distance=45' 12445-3252 RST1689 distance=50' 12428-3428 RST2810 distance=59' 12463-3307 SKF1947 distance=60' 12468-3319 HDO 219 distance=62' 12394-3228 TDS8473AB distance=70' 12394-3228 SKF1223AB,C distance=70' 12361-3335 LDS5756 distance=74' 12360-3307 HJ 4532 distance=79' 12483-3309 SKF1949 distance=82' 12407-3455 GRV1275 distance=86' 12492-3303 I 1560 distance=96' 12448-3500 TDS8510AB distance=97' 12432-3506 TDS8498 distance=98' 12390-3200 TOI 758 distance=99' 12371-3213 KPP3036 distance=99' 12369-3211 I 1222AB distance=103' 12369-3211 I 1222AB,C distance=103' 12497-3406 DAM 710AB distance=104' 12507-3400 SEE 163 distance=113' 12356-3453 LDS 413AB distance=115' 12356-3453 LDS 413Ba,Bb distance=115' 12461-3146 B 232 distance=117' 12474-3154 TDS8522 distance=119' 12494-3446 SEE 162 distance=120' 12487-3458 RST2817 distance=121' 12517-3328 I 1561 distance=123' 12515-3400 RST2820 distance=123' 12517-3321 SEE 164AB distance=123' 12517-3321 SEE 164AC distance=123' 12332-3427 TSN 85 distance=124' 12359-3513 I 1556 distance=128' 12342-3206 HJ 4528AB distance=130' 12524-3319 PRO 103 distance=132' 12323-3238 DAM1445 distance=132' 12429-3542 SKF1224 distance=133' 12321-3239 LDS5755 distance=136' 12476-3535 KPP2125 distance=143' 12306-3407 UC 2352 distance=147' 12343-3523 CBL 143 distance=147' 12533-3250 B 2304 distance=149' 12323-3459 NSN 410 distance=150' 12539-3310 I 910AB distance=151' 12539-3310 I 910BC distance=151' 12481-3542 SEE 161AB distance=153' 12481-3542 SEE 161BC distance=153' 12349-3125 B 2296 distance=155' 12461-3105 UC 2403 distance=155' 12300-3411 TSN 160 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 12420-3330 I 1557 AB 94 3.2
Show 12433-3341 I 1558 281 0.5 20
Show 12389-3308 UC 2377 30 21.2 45
Show 12445-3252 RST1689 258 1.2 50
Show 12428-3428 RST2810 217 1.2 59
Show 12463-3307 SKF1947 304 6.4 60
Show 12468-3319 HDO 219 219 77.4 62
Show 12394-3228 TDS8473 AB 312 0.4 70
Show 12394-3228 SKF1223 AB,C 357 16.0 70
Show 12361-3335 LDS5756 309 102.5 74
Show 12360-3307 HJ 4532 267 5.0 79
Show 12483-3309 SKF1949 99 29.1 82
Show 12407-3455 GRV1275 109 1.3 86
Show 12492-3303 I 1560 317 1.6 96
Show 12448-3500 TDS8510 AB 269 0.7 97
Show 12432-3506 TDS8498 197 2.2 98
Show 12390-3200 TOI 758 349 0.2 99
Show 12371-3213 KPP3036 74 3.4 99
Show 12369-3211 I 1222 AB 222 0.3 103
Show 12369-3211 I 1222 AB,C 314 12.8 103
Show 12497-3406 DAM 710 AB 217 255.8 104
Show 12507-3400 SEE 163 60 27.6 113
Show 12356-3453 LDS 413 AB 147 95.6 115
Show 12356-3453 LDS 413 Ba,Bb 41 0.4 115
Show 12461-3146 B 232 44 0.7 117
Show 12474-3154 TDS8522 95 0.8 119
Show 12494-3446 SEE 162 227 6.2 120
Show 12487-3458 RST2817 124 1.2 121
Show 12517-3328 I 1561 116 4.3 123
Show 12515-3400 RST2820 190 0.3 123
Show 12517-3321 SEE 164 AB 184 2.6 123
Show 12517-3321 SEE 164 AC 113 41.8 123
Show 12332-3427 TSN 85 141 25.8 124
Show 12359-3513 I 1556 149 4.7 128
Show 12342-3206 HJ 4528 AB 140 30.2 130
Show 12524-3319 PRO 103 335 7.7 132
Show 12323-3238 DAM1445 158 1.9 132
Show 12429-3542 SKF1224 228 55.2 133
Show 12321-3239 LDS5755 145 206.8 136
Show 12476-3535 KPP2125 41 17.2 143
Show 12306-3407 UC 2352 213 9.0 147
Show 12343-3523 CBL 143 163 44.3 147
Show 12533-3250 B 2304 96 1.7 149
Show 12323-3459 NSN 410 274 7.3 150
Show 12539-3310 I 910 AB 36 52.9 151
Show 12539-3310 I 910 BC 114 3.1 151
Show 12481-3542 SEE 161 AB 108 34.2 153
Show 12481-3542 SEE 161 BC 96 5.6 153
Show 12349-3125 B 2296 72 11.9 155
Show 12461-3105 UC 2403 269 10.3 155
Show 12300-3411 TSN 160 64 0.1 155

 
 
WDS 12420-3330 : COMPONENTS
 
 
  A
B pa=95.0°
sep=2.68"
 
 
12420-3330 A
 
 
Coord arcsec 2000 124158.17-333020.9 Mag 9.3 Spectral class A2 (white) PmRA -30.00
PmDE 1.0 SAO 203721 Tycho2 7251-01278-1 HD 110386
DM CD-32 8872
Tycho2
Tycho2 7251-01278-1 Pflag RAmdeg 190.49240277 DEmdeg -33.50581571
PmRA -32.6 PmDE -2.0 E RAmdeg 11 E DEmdeg 11
E pmRA 1.3 E pmDE 1.3 EpRAm 1989.76 EpDEm 1989.49
Num 10 Q RAmdeg 1.2 Q DEmdeg 0.5 Q pmRA 1.2
Q pmDE 0.5 BTmag 9.632 E BTmag 0.023 VTmag 9.297
E VTmag 0.019 Prox 892 TYC T HIP
CCDM RAdeg 190.49249250 DEdeg -33.50581139 EpRA 1990 1.69
EpDE 1990 1.77 E RAdeg 10.9 E DEdeg 12.2 Posflg
Corr 0.1
SAO
SAO 203721 DelFlag RA1950 PmRA1950 -0.0028
DE1950 PmDE1950 0.002 Vmag 9.1 SpType A2
Double code Source 40 CatNum 6370 DM CD-32 8872
DMcomp BDsup HD 110386 M HD 0
GC RA1950rad 3.31298479 DE1950rad -0.58000329 PmRA2000 -0.0027
PmDE2000 0.006
CCDM
Ccdm 12420-3330 RComp Comp A Note1
Note2 Discov num DRAs -1.85 DDEs -20.7
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.1 Sp A2 PmNote *
PmRA -35 PmDE 2 Dm number -32 8872 Cat1 CD
Name2 203721 Cat2 SAO HD 110386 M HD
ADS BDS M ADS BDS N IDS IDS 12366S3257A
HIC
 
 
12420-3330 B
 
 
Coord arcsec 2000 124158.38-333021.1 Mag 13.7 Calc delta mag 4.4 Calc coord yes
CCDM
Ccdm 12420-3330 RComp Comp B Note1
Note2 Discov num I 1557 DRAs DDEs
R dRAs Year 1927 Theta 096 Rho 3.1
Obs 2 Vmag 13.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 12366S3257B
HIC