18531-2745 I 1031 (HD 174742)

 
 
18h 53m 07.64s -27° 45' 23.3" P.A. 349.00 sep 0.4 mag 7.70,8.90 Sp A9V
 
 
Coord 2000 18531-2745 Discov num I  1031 Comp Coord arcsec 2000 18 53 07.64 -27 45 23.3
Date first 1910 Date last 2021 Obs 15
Pa first 280 Pa last 349.2 P.A. Now (θ) 349.2°
Sep first 0.5 Sep last 0.38 Sep. Now (ρ) 0.38"
Mag pri 7.70 Mag sec 8.90 delta mag (ΔM) 1.2 Spectral class A9V (white)
Pri motion ra +004 Sec motion ra
Pri motion dec +025 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 174742 Constellation Sagittarius SAO 187403 Tycho2 6868-01153-1
Gaia DR2 4071963836574908800 HD 174742 GC 25890 ADS 11774
 
 
WDS 18531-2745 I 1031 (HD 174742) : 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
18531-2745 I 1031 1990 11 323 0.4 7.70 8.90 A9V 185307.64-274523.3
18531-2745 I 1031 2008 12 157 0.4 7.70 8.90 A9V 185307.64-274523.3
18531-2745 I 1031 2013 13 342 0.4 7.70 8.90 A9V 185307.64-274523.3
18531-2745 I 1031 2018 14 346 0.4 7.70 8.90 A9V 185307.64-274523.3
18531-2745 I 1031 2021 15 349 0.4 7.70 8.90 A9V 185307.64-274523.3

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

 
 
WDS 18531-2745 I 1031 (HD 174742) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18531-2745 I 1031 (HD 174742) : MEASURES
 
 
No records found.

 
 
WDS 18531-2745 (HD 174742) : VIRTUAL EYEPIECE
 
 

18531-2745 I  1031A mag 7.7 Sp A9V 18531-2745 I  1031B sep 0.4 P.A. 350.40 mag 8.9 virtual eyepiece
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Radius:
Components only
 
 
WDS 18531-2745 (HD 174742) : ALADIN DSS IMAGE @ 18h 53m 07.64s -27° 45' 23.3"
 
 
 
 
WDS 18531-2745 I 1031 (HD 174742) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


18531-2745  I  1031 distance=1' 18544-2727  B   411 distance=25' 18554-2801  TVB 305 distance=34' 18560-2808  SEE 364 distance=44' 18496-2736  OCC 153 distance=48' 18511-2846  BRT3079 distance=66' 18517-2641  RST2079 distance=67' 18506-2646  B   409 distance=68' 18502-2647  J  1637 distance=70' 18490-2830  RST2077 distance=71' 18572-2652  TSN  65 distance=76' 18594-2744  B  2465 distance=84' 18464-2755  RST2073 distance=91' 18553-2618  BED   1Aa,Ab (Nunki) distance=93' 18553-2618  SMY   4AB (Nunki) distance=93' 18494-2904  OL   21 distance=94' 18579-2854  RST2082 distance=94' 18463-2721  B   405 distance=95' 18593-2653  RSS 501 distance=98' 18569-2910  SKF 455 distance=99' 18512-2601  OCC  66 distance=108' 19001-2842  WRS  10 distance=108' 19013-2733  B   418 distance=110' 18457-2659  OCC9185 distance=110' 18450-2813  B   403 distance=112' 18456-2651  I  1382 distance=115' 18457-2847  B   404 distance=117' 18489-2603  B   406 distance=118' 18460-2856  TSN 187 distance=119' 18459-2637  J  2229 distance=119' 19011-2843  RSS 502AB distance=121' 19011-2843  CVN 103AC distance=121' 19011-2843  CVN 103AD distance=121' 19011-2843  CVN 103AE distance=121' 19011-2843  CVN 103AF distance=121' 19011-2843  CVN 103AG distance=121' 19011-2843  CVN 103AH distance=121' 19011-2843  CVN 103AI distance=121' 19011-2843  CVN 103AJ distance=121' 19011-2843  CVN 103AK distance=121' 19011-2843  CVN 103AL distance=121' 19011-2843  CVN 103AM distance=121' 19011-2843  CVN 103AN distance=121' 19011-2843  CVN 103AO distance=121' 19011-2843  CVN 103AP distance=121' 19011-2843  CVN 103AQ distance=121' 18591-2612  I  1389 distance=123' 18544-2543  RST3204 distance=125' 18591-2609  B   415 distance=125' 19005-2907  B   419 distance=128' 18536-2536  RST3202 distance=130' grafico limitrofi
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Pass over with the mouse cursor to display the catalog designation.

Show name coord_2000 discov# comp pa sep dist(')
Show 18531-2745 I 1031 349 0.4 1
Show 18544-2727 B 411 40 4.1 25
Show 18554-2801 TVB 305 192 2.0 34
Show 18560-2808 SEE 364 127 0.9 44
Show 18496-2736 OCC 153 -1 0.1 48
Show 18511-2846 BRT3079 233 4.0 66
Show 18517-2641 RST2079 197 1.9 67
Show 18506-2646 B 409 258 5.2 68
Show 18502-2647 J 1637 16 5.2 70
Show 18490-2830 RST2077 164 0.6 71
Show 18572-2652 TSN 65 338 70.2 76
Show 18594-2744 B 2465 189 7.4 84
Show 18464-2755 RST2073 149 0.4 91
Show Nunki 18553-2618 BED 1 Aa,Ab 202 0.0 93
Show Nunki 18553-2618 SMY 4 AB 239 349.0 93
Show 18494-2904 OL 21 152 2.1 94
Show 18579-2854 RST2082 91 0.4 94
Show 18463-2721 B 405 136 0.5 95
Show 18593-2653 RSS 501 124 11.5 98
Show 18569-2910 SKF 455 359 8.1 99
Show 18512-2601 OCC 66 -1 0.1 108
Show 19001-2842 WRS 10 355 15.9 108
Show 19013-2733 B 418 155 1.7 110
Show 18457-2659 OCC9185 10 0.2 110
Show 18450-2813 B 403 76 2.4 112
Show 18456-2651 I 1382 200 0.4 115
Show 18457-2847 B 404 238 5.0 117
Show 18489-2603 B 406 315 1.7 118
Show 18460-2856 TSN 187 172 0.4 119
Show 18459-2637 J 2229 26 3.7 119
Show 19011-2843 RSS 502 AB 334 11.1 121
Show 19011-2843 CVN 103 AC 121 3.2 121
Show 19011-2843 CVN 103 AD 9 4.3 121
Show 19011-2843 CVN 103 AE 266 4.6 121
Show 19011-2843 CVN 103 AF 139 4.8 121
Show 19011-2843 CVN 103 AG 174 5.2 121
Show 19011-2843 CVN 103 AH 177 5.3 121
Show 19011-2843 CVN 103 AI 275 6.1 121
Show 19011-2843 CVN 103 AJ 185 6.8 121
Show 19011-2843 CVN 103 AK 154 6.9 121
Show 19011-2843 CVN 103 AL 46 7.1 121
Show 19011-2843 CVN 103 AM 117 7.5 121
Show 19011-2843 CVN 103 AN 115 7.5 121
Show 19011-2843 CVN 103 AO 237 4.2 121
Show 19011-2843 CVN 103 AP 262 5.9 121
Show 19011-2843 CVN 103 AQ 322 9.2 121
Show 18591-2612 I 1389 105 5.4 123
Show 18544-2543 RST3204 225 2.7 125
Show 18591-2609 B 415 1 4.6 125
Show 19005-2907 B 419 68 1.8 128
Show 18536-2536 RST3202 50 0.2 130

 
 
WDS 18531-2745 : COMPONENTS
 
 
  A
B pa=350.4°
sep=0.38"
 
 
18531-2745 A
 
 
Componente originario normalizzato AB Name HD 174742 Coord arcsec 2000 185307.64-274523.3 Mag 7.7
Spectral class A9V (white) PmRA 4.00 PmDE 25.0 SAO 187403
Tycho2 6868-01153-1 HD 174742 GC 25890 ADS 11774
DM CD-2713319
Tycho2
Tycho2 6868-01153-1 Pflag RAmdeg 283.28182245 DEmdeg -27.75647576
PmRA 0.1 PmDE 20.6 E RAmdeg 5 E DEmdeg 6
E pmRA 0.9 E pmDE 0.9 EpRAm 1991.14 EpDEm 1990.83
Num 17 Q RAmdeg 1.0 Q DEmdeg 1.5 Q pmRA 1.1
Q pmDE 1.6 BTmag 7.967 E BTmag 0.016 VTmag 7.604
E VTmag 0.011 Prox 999 TYC T HIP
CCDM RAdeg 283.28182222 DEdeg -27.75652389 EpRA 1990 1.75
EpDE 1990 1.68 E RAdeg 4.6 E DEdeg 5.6 Posflg
Corr 0.1
SAO
SAO 187403 DelFlag RA1950 PmRA1950 -0.0001
DE1950 PmDE1950 0.026 Vmag 7.4 SpType A5
Double code Source 70 CatNum 25890 DM CD-2713319
DMcomp BDsup HD 174742 M HD 0
GC 25890 RA1950rad 4.93051961 DE1950rad -0.48553087 PmRA2000 -0.0002
PmDE2000 0.026
CCDM
Ccdm 18531-2745 RComp Comp A Note1
Note2 Discov num DRAs 1.58 DDEs -23.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.7 Sp A5 PmNote *
PmRA -2 PmDE 25 Dm number -2713319 Cat1 CD
Name2 187403 Cat2 SAO HD 174742 M HD
ADS BDS A11774 M ADS BDS N IDS IDS 18469S2753A
HIC
 
 
18531-2745 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 185307.64-274522.9 Mag 8.9 Calc delta mag 1.2
Calc coord yes
CCDM
Ccdm 18531-2745 RComp Comp B Note1
Note2 Discov num I 1031 DRAs DDEs
R dRAs Year 1947 Theta 302 Rho 0.5
Obs 7 Vmag 8.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11774 M ADS BDS N IDS IDS 18469S2753B
HIC