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Doubles in session


Current system
18435-3355
I 638
HD 172796


Nearby doubles
16' : 18447-3401
JSP 786

22' : 18448-3410
JSP 942

23' : 18447-3339
TDT1027

33' : 18432-3323
JAO 6

37' : 18448-3323
OL 20

43' : 18417-3431
JSP 785

44' : 18453-3318
B 944

52' : 18476-3356
BRT1788

56' : 18448-3449
BRT1786

67' : 18454-3254
GAT 26

70' : 18409-3457
RSS 488

76' : 18487-3314
JSP 788

79' : 18409-3507
FAL 62

79' : 18444-3513
TDT1024

80' : 18497-3336
SEE 361

87' : 18437-3229
FAL 63

89' : 18365-3342
B 940

94' : 18438-3221
SHN 234

95' : 18422-3222
RST2071

97' : 18453-3529
B 943

97' : 18358-3357
B 2455

99' : 18443-3533
BRT1785

99' : 18370-3301
JSP 783

99' : 18383-3241
FIN 3AB

99' : 18494-3502
B 2463AB

102' : 18362-3311
I 637



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.

18435-3355 I 638 (HD 172796)

 
 
18h 43m 31.32s -33° 55' 23.6" P.A. 114.00 sep 0.6 mag 8.32,10.20 Sp F7V dist. 161.55 pc (526.98 l.y.)
 
 
Coord 2000 18435-3355 Discov num I   638 Comp Coord arcsec 2000 18 43 31.32 -33 55 23.6
Date first 1909 Date last 1991 Obs 6
Pa first 130 Pa last 113.5 P.A. Now (θ) 113.5°
Sep first 0.6 Sep last 0.64 Sep. Now (ρ) 0.64"
Mag pri 8.32 Mag sec 10.20 delta mag (ΔM) 1.88 Spectral class F7V (yellow-white)
Pri motion ra +040 Sec motion ra +040
Pri motion dec +001 Sec motion dec +001
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 172796 Constellation Sagittarius SAO 210500 HIP 91846
Tycho2 7415-00192-1 Gaia DR2 6735484815895529472 HD 172796 CD CD-3413062
CP CP-34 8037 Distance 161.55 Distance ly 526.98
 
 
WDS 18435-3355 I 638 (HD 172796) : 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
18435-3355 I 638 1991 6 114 0.6 8.32 10.20 F7V D 184331.32-335523.6

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

 
 
WDS 18435-3355 I 638 (HD 172796) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18435-3355 I 638 (HD 172796) : MEASURES
 
 
No records found.

 
 
WDS 18435-3355 (HD 172796) : VIRTUAL EYEPIECE
 
 

18435-3355 I 638A mag 8.32 Sp F7V 18435-3355 I 638B sep 0.6 P.A. 117.70 mag 10.2 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 18435-3355 (HD 172796) : ALADIN DSS IMAGE @ 18h 43m 31.32s -33° 55' 23.6"
 
 
 
 
WDS 18435-3355 I 638 (HD 172796) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18435-3355 I 638 distance=0' 18447-3401 JSP 786 distance=16' 18448-3410 JSP 942 distance=22' 18447-3339 TDT1027 distance=23' 18432-3323 JAO 6 distance=33' 18448-3323 OL 20 distance=37' 18417-3431 JSP 785 distance=43' 18453-3318 B 944 distance=44' 18476-3356 BRT1788 distance=52' 18448-3449 BRT1786 distance=56' 18454-3254 GAT 26 distance=67' 18409-3457 RSS 488 distance=70' 18487-3314 JSP 788 distance=76' 18409-3507 FAL 62 distance=79' 18444-3513 TDT1024 distance=79' 18497-3336 SEE 361 distance=80' 18437-3229 FAL 63 distance=87' 18365-3342 B 940 distance=89' 18438-3221 SHN 234 distance=94' 18422-3222 RST2071 distance=95' 18453-3529 B 943 distance=97' 18358-3357 B 2455 distance=97' 18443-3533 BRT1785 distance=99' 18370-3301 JSP 783 distance=99' 18383-3241 FIN 3AB distance=99' 18383-3241 SKF2068AC distance=99' 18494-3502 B 2463AB distance=99' 18362-3311 I 637 distance=102' 18498-3501 B 950 distance=102' 18476-3228 PRO 212AB distance=102' 18476-3228 SIN 111AC distance=102' 18384-3515 TDT 970 distance=102' 18407-3219 JSP 941 distance=104' 18443-3539 B 942 distance=104' 18456-3539 KPP2513 distance=107' 18444-3542 KOH 107 distance=107' 18386-3528 BRT1784 distance=111' 18510-3454 JSP 791 distance=111' 18523-3330 BRT1789 distance=113' 18346-3338 SKF 457 distance=113' 18528-3408 UC 3707 distance=117' 18451-3552 JSP 943 distance=119' 18479-3211 RST2074 distance=119' 18529-3421 UC 3708 distance=120' 18396-3207 PRO 208 distance=120' 18525-3443 UC 3705 distance=121' 18531-3422 UC 3711 distance=122' 18529-3433 UC 3709 distance=122' 18512-3240 RST2078 distance=123' 18345-3449 STN 62 distance=125' 18505-3526 UC 3692 distance=126' 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 18435-3355 I 638 114 0.6
Show 18447-3401 JSP 786 261 0.2 16
Show 18448-3410 JSP 942 303 5.5 22
Show 18447-3339 TDT1027 180 1.3 23
Show 18432-3323 JAO 6 353 15.0 33
Show 18448-3323 OL 20 224 0.1 37
Show 18417-3431 JSP 785 116 1.7 43
Show 18453-3318 B 944 177 2.0 44
Show 18476-3356 BRT1788 161 2.6 52
Show 18448-3449 BRT1786 73 2.1 56
Show 18454-3254 GAT 26 68 4.5 67
Show 18409-3457 RSS 488 91 9.7 70
Show 18487-3314 JSP 788 52 6.6 76
Show 18409-3507 FAL 62 178 9.3 79
Show 18444-3513 TDT1024 202 0.4 79
Show 18497-3336 SEE 361 234 1.1 80
Show 18437-3229 FAL 63 338 13.4 87
Show 18365-3342 B 940 258 1.8 89
Show 18438-3221 SHN 234 -1 0.1 94
Show 18422-3222 RST2071 10 0.8 95
Show 18453-3529 B 943 271 0.5 97
Show 18358-3357 B 2455 338 6.5 97
Show 18443-3533 BRT1785 334 3.0 99
Show 18370-3301 JSP 783 17 1.0 99
Show 18383-3241 FIN 3 AB 261 4.6 99
Show 18383-3241 SKF2068 AC 218 122.5 99
Show 18494-3502 B 2463 AB 30 0.2 99
Show 18362-3311 I 637 115 0.3 102
Show 18498-3501 B 950 340 0.8 102
Show 18476-3228 PRO 212 AB 334 7.6 102
Show 18476-3228 SIN 111 AC 79 63.0 102
Show 18384-3515 TDT 970 81 0.6 102
Show 18407-3219 JSP 941 167 5.0 104
Show 18443-3539 B 942 314 9.7 104
Show 18456-3539 KPP2513 226 22.6 107
Show 18444-3542 KOH 107 185 0.2 107
Show 18386-3528 BRT1784 192 4.8 111
Show 18510-3454 JSP 791 309 1.7 111
Show 18523-3330 BRT1789 51 5.5 113
Show 18346-3338 SKF 457 359 13.6 113
Show 18528-3408 UC 3707 85 54.3 117
Show 18451-3552 JSP 943 353 5.2 119
Show 18479-3211 RST2074 89 4.9 119
Show 18529-3421 UC 3708 331 41.4 120
Show 18396-3207 PRO 208 219 6.8 120
Show 18525-3443 UC 3705 52 79.8 121
Show 18531-3422 UC 3711 224 48.0 122
Show 18529-3433 UC 3709 260 13.1 122
Show 18512-3240 RST2078 188 0.7 123
Show 18345-3449 STN 62 132 2.3 125
Show 18505-3526 UC 3692 95 53.9 126

 
 
WDS 18435-3355 : COMPONENTS
 
 
  A
B pa=117.7°
sep=0.55"
 
 
18435-3355 A
 
 
Componente originario normalizzato AB Name HD 172796 Coord arcsec 2000 184331.32-335523.6 Mag 8.32
Spectral class F7V (yellow-white) PmRA 40.00 PmDE 1.0 SAO 210500
HIP 91846 Tycho2 7415-00192-1 HD 172796 CD CD-3413062
CP CP-34 8037
Tycho2
Tycho2 7415-00192-1 Pflag RAmdeg 280.88050303 DEmdeg -33.92321907
PmRA 39.7 PmDE 0.6 E RAmdeg 6 E DEmdeg 7
E pmRA 1.2 E pmDE 1.2 EpRAm 1991.21 EpDEm 1990.91
Num 11 Q RAmdeg 0.7 Q DEmdeg 0.7 Q pmRA 0.7
Q pmDE 0.7 BTmag 8.775 E BTmag 0.018 VTmag 8.196
E VTmag 0.013 Prox 999 TYC T HIP 91846
CCDM AB RAdeg 280.88039444 DEdeg -33.92322028 EpRA 1990 1.84
EpDE 1990 1.75 E RAdeg 5.7 E DEdeg 7.2 Posflg P
Corr 0.0
SAO
SAO 210500 DelFlag RA1950 PmRA1950 0.0034
DE1950 PmDE1950 -0.012 Vmag 8 SpType F8
Double code Source 40 CatNum 10143 DM CD-3413062
DMcomp BDsup HD 172796 M HD 0
GC RA1950rad 4.88787629 DE1950rad -0.59295548 PmRA2000 0.0033
PmDE2000 -0.012
Hipparcos
Catalog H HIP 91846 Proxy H RAhms 18 43 31.29
DEdms -33 55 23.6 Vmag 8.11 VarFlag R Vmag H
RAdeg 280.88 DEdeg -33.9232 AstroRef A Plx 6.61
CCDM 18435-3355 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 117 Rho 0.685 HD 172796 BD
CD CD-3413062 CP CP-34 8037 Dm number -3413062 VIred 0.59
SpType F7V R SpType Coord arcsec 2000 184331.29-335523.6
Hipparcos 2
HIP 91846 Sn 15 So 3 Nc 2
RArad 4.9022872625 DErad -0.5920717589 Plx 6.19 PmRA 36.8
PmDE 1.94 E RArad 1.49 E DErad 0.95 E Plx 1.53
E pmRA 2.34 E pmDE 1.28 Hpmag 8.2291 E Hpmag 0.0024
SHp 0.016 VA 0 BV 0.546 E BV 0.013
VI 0.62
CCDM
Ccdm 18435-3355 RComp Comp A Note1
Note2 Discov num DRAs 1.30 DDEs -24.3
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.1 Sp F8 PmNote *
PmRA 42 PmDE -12 Dm number -3413062 Cat1 CD
Name2 210500 Cat2 SAO HD 172796 M HD
ADS BDS M ADS BDS N IDS IDS 18369S3401A
HIC 91846
 
 
18435-3355 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 184331.36-335523.9 Mag 10.2 PmRA 40.00
PmDE 1.0 Calc delta mag 1.88 Calc coord yes
CCDM
Ccdm 18435-3355 RComp Comp B Note1
Note2 Discov num I 638 DRAs DDEs
R dRAs Year 1929 Theta 131 Rho 0.7
Obs 1 Vmag 10.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 18369S3401B
HIC 91846