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Doubles in session


Current system
18280-2651
I 1366
HD 169918


Nearby doubles
6' : 18281-2645
HDS2615AB

13' : 18277-2638
BU 133

20' : 18292-2640
B 391

21' : 18290-2635
WNO 6

28' : 18289-2716
OCC 185

30' : 18286-2717
J 2214

35' : 18275-2725
FIN 267

37' : 18259-2713
RST2050

38' : 18307-2700
RST2059

47' : 18256-2724
COO 225AB

47' : 18257-2726
OCC 186

52' : 18265-2601
J 2212

53' : 18266-2600
J 2213

57' : 18261-2740
J 2211AB

61' : 18322-2630
SKF2066

63' : 18264-2749
B 2865

64' : 18311-2738
J 1632

67' : 18259-2752
RST2051

72' : 18236-2610
HO 566

74' : 18225-2651
JKS 21AB

76' : 18296-2803
SKF2128

79' : 18239-2746
VVV 4

84' : 18303-2533
B 394

86' : 18317-2541
OCC 264

86' : 18280-2525
WFC 208
Kaus Borealis

87' : 18328-2747
KPP 417



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.

18280-2651 I 1366 (HD 169918)

 
 
18h 27m 58.86s -26° 50' 34.8" P.A. 225.00 sep 0.4 mag 9.98,9.88 Sp F3V
 
 
Coord 2000 18280-2651 Discov num I  1366 Comp Coord arcsec 2000 18 27 58.86 -26 50 34.8
Date first 1925 Date last 1991 Obs 12
Pa first 200 Pa last 225.4 P.A. Now (θ) 225.4°
Sep first 0.6 Sep last 0.39 Sep. Now (ρ) 0.39"
Mag pri 9.98 Mag sec 9.88 delta mag (ΔM) 0.1 Spectral class F3V (yellow-white)
Pri motion ra -011 Sec motion ra -011
Pri motion dec -033 Sec motion dec -033
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 169918 Constellation Sagittarius SAO 186839 Tycho2 6865-01738-1
Gaia DR2 4052000961706378880 HD 169918
 
 
WDS 18280-2651 I 1366 (HD 169918) : 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
18280-2651 I 1366 1991 12 225 0.4 9.98 9.88 F3V 182758.86-265034.8

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

 
 
WDS 18280-2651 I 1366 (HD 169918) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18280-2651 I 1366 (HD 169918) : MEASURES
 
 
No records found.

 
 
WDS 18280-2651 (HD 169918) : VIRTUAL EYEPIECE
 
 

18280-2651 I 1366A mag 9.98 Sp F3V 18280-2651 I 1366B sep 0.4 P.A. 222.10 mag 9.88 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 18280-2651 (HD 169918) : ALADIN DSS IMAGE @ 18h 27m 58.86s -26° 50' 34.8"
 
 
 
 
WDS 18280-2651 I 1366 (HD 169918) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18280-2651 I 1366 distance=0' 18281-2645 HDS2615AB distance=6' 18281-2645 ARY 126AC distance=6' 18277-2638 BU 133 distance=13' 18292-2640 B 391 distance=20' 18290-2635 WNO 6 distance=21' 18289-2716 OCC 185 distance=28' 18286-2717 J 2214 distance=30' 18275-2725 FIN 267 distance=35' 18259-2713 RST2050 distance=37' 18307-2700 RST2059 distance=38' 18256-2724 COO 225AB distance=47' 18256-2724 SIN 109AC distance=47' 18257-2726 OCC 186 distance=47' 18265-2601 J 2212 distance=52' 18266-2600 J 2213 distance=53' 18261-2740 J 2211AB distance=57' 18261-2740 J 2211AC distance=57' 18322-2630 SKF2066 distance=61' 18264-2749 B 2865 distance=63' 18311-2738 J 1632 distance=64' 18259-2752 RST2051 distance=67' 18236-2610 HO 566 distance=72' 18225-2651 JKS 21AB distance=74' 18225-2651 JKS 21AC distance=74' 18296-2803 SKF2128 distance=76' 18239-2746 VVV 4 distance=79' 18312-2757 RST2060Ba,Bb distance=80' 18303-2533 B 394 distance=84' 18317-2541 OCC 264 distance=86' 18280-2525 WFC 208 (Kaus Borealis) distance=86' 18328-2747 KPP 417 distance=87' 18325-2753 SKF2131 distance=87' 18346-2734 I 1026AB distance=99' 18346-2734 I 1026A,CD distance=99' 18346-2734 TOK 422Aa,Ab distance=99' 18346-2734 I 1027CD distance=100' 18264-2509 J 1742 distance=105' 18273-2503 LDS 639 distance=107' 18356-2617 OCC9050Ba,Bb distance=108' 18356-2617 B 396AB distance=108' 18289-2503 H N 125AB distance=109' 18354-2607 TDT 949 distance=110' 18229-2524 B 389 distance=111' 18319-2831 RST2062 distance=113' 18232-2825 HDS2601 distance=114' 18207-2754 TDT 809 distance=116' 18279-2848 RST2056 distance=118' 18191-2644 B 387BC distance=120' 18191-2644 B 387BD distance=120' 18191-2644 B 387AB distance=120' 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 18280-2651 I 1366 225 0.4
Show 18281-2645 HDS2615 AB 186 0.3 6
Show 18281-2645 ARY 126 AC 135 54.1 6
Show 18277-2638 BU 133 230 0.6 13
Show 18292-2640 B 391 65 0.2 20
Show 18290-2635 WNO 6 182 41.8 21
Show 18289-2716 OCC 185 -1 0.1 28
Show 18286-2717 J 2214 119 5.3 30
Show 18275-2725 FIN 267 343 4.9 35
Show 18259-2713 RST2050 77 2.0 37
Show 18307-2700 RST2059 5 1.9 38
Show 18256-2724 COO 225 AB 359 5.9 47
Show 18256-2724 SIN 109 AC 89 69.0 47
Show 18257-2726 OCC 186 -1 0.1 47
Show 18265-2601 J 2212 302 5.3 52
Show 18266-2600 J 2213 90 6.5 53
Show 18261-2740 J 2211 AB 49 5.7 57
Show 18261-2740 J 2211 AC 196 11.4 57
Show 18322-2630 SKF2066 282 17.5 61
Show 18264-2749 B 2865 298 11.4 63
Show 18311-2738 J 1632 165 5.3 64
Show 18259-2752 RST2051 116 1.4 67
Show 18236-2610 HO 566 143 0.5 72
Show 18225-2651 JKS 21 AB 326 22.9 74
Show 18225-2651 JKS 21 AC 48 26.4 74
Show 18296-2803 SKF2128 291 4.8 76
Show 18239-2746 VVV 4 166 95.5 79
Show 18312-2757 RST2060 Ba,Bb 8 0.6 80
Show 18303-2533 B 394 197 0.2 84
Show 18317-2541 OCC 264 -1 0.1 86
Show Kaus Borealis 18280-2525 WFC 208 184 82.5 86
Show 18328-2747 KPP 417 57 5.0 87
Show 18325-2753 SKF2131 47 4.7 87
Show 18346-2734 I 1026 AB 41 9.0 99
Show 18346-2734 I 1026 A,CD 145 36.1 99
Show 18346-2734 TOK 422 Aa,Ab 102 0.1 99
Show 18346-2734 I 1027 CD 69 1.9 100
Show 18264-2509 J 1742 233 4.6 105
Show 18273-2503 LDS 639 353 21.1 107
Show 18356-2617 OCC9050 Ba,Bb -1 0.0 108
Show 18356-2617 B 396 AB 218 1.7 108
Show 18289-2503 H N 125 AB 107 2.5 109
Show 18354-2607 TDT 949 91 0.7 110
Show 18229-2524 B 389 223 0.3 111
Show 18319-2831 RST2062 3 0.8 113
Show 18232-2825 HDS2601 221 0.2 114
Show 18207-2754 TDT 809 108 0.5 116
Show 18279-2848 RST2056 27 2.6 118
Show 18191-2644 B 387 BC 164 0.8 120
Show 18191-2644 B 387 BD 321 4.7 120
Show 18191-2644 B 387 AB 37 8.5 120

 
 
WDS 18280-2651 : COMPONENTS
 
 
  A
B pa=222.1°
sep=0.37"
 
 
18280-2651 A
 
 
Componente originario normalizzato AB Name HD 169918 Coord arcsec 2000 182758.86-265034.8 Mag 9.98
Spectral class F3V (yellow-white) PmRA -11.00 PmDE -33.0
CCDM
Ccdm 18280-2651 RComp Comp A Note1
Note2 Discov num DRAs -1.19 DDEs 24.2
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.2 Sp F5 PmNote *
PmRA -17 PmDE -49 Dm number -2613188 Cat1 CD
Name2 186839 Cat2 SAO HD 169918 M HD
ADS BDS A11360 M ADS BDS N IDS IDS 18217S2654A
HIC
 
 
18280-2651 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 182758.84-265035.1 Mag 9.88 PmRA -11.00
PmDE -33.0 SAO 186839 Tycho2 6865-01738-1 HD 169918
DM CD-2613188 Calc delta mag 0.1 Calc coord yes
Tycho2
Tycho2 6865-01738-1 Pflag RAmdeg 276.99520431 DEmdeg -26.84302581
PmRA -11.2 PmDE -33.4 E RAmdeg 11 E DEmdeg 16
E pmRA 1.6 E pmDE 1.5 EpRAm 1990.40 EpDEm 1988.32
Num 6 Q RAmdeg 1.7 Q DEmdeg 0.6 Q pmRA 1.8
Q pmDE 0.7 BTmag 9.820 E BTmag 0.026 VTmag 9.274
E VTmag 0.022 Prox 999 TYC T HIP
CCDM RAdeg 276.99523417 DEdeg -26.84294972 EpRA 1990 1.86
EpDE 1990 1.85 E RAdeg 11.4 E DEdeg 17.4 Posflg
Corr -0.1
SAO
SAO 186839 DelFlag RA1950 PmRA1950 -0.0013
DE1950 PmDE1950 -0.049 Vmag 8.8 SpType F5
Double code Source 25 CatNum 12789 DM CD-2613188
DMcomp BDsup HD 169918 M HD 0
GC RA1950rad 4.82085281 DE1950rad -0.46905071 PmRA2000 -0.0014
PmDE2000 -0.049
CCDM
Ccdm 18280-2651 RComp Comp B Note1
Note2 Discov num I 1366 DRAs DDEs
R dRAs Year 1959 Theta 210 Rho 0.5
Obs 7 Vmag 9.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11360 M ADS BDS N IDS IDS 18217S2654B
HIC