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Doubles in session


Current system
18437-2240
DON 919 AB


Nearby doubles
6' : 18440-2237
RST5453

17' : 18433-2225
I 1381

35' : 18421-2307
SHN 38

36' : 18411-2236
ARA1896

38' : 18444-2316
ARA2246

40' : 18451-2315
CBL 173

41' : 18463-2224
SEE 360

45' : 18442-2325
RST3195

47' : 18425-2323
SHN 233

49' : 18472-2246
DON 923

56' : 18419-2329
ARA2243

56' : 18397-2249
SHN 231

58' : 18427-2336
BRT1542

66' : 18401-2322
SHN 232

68' : 18423-2344
ARA2244

68' : 18471-2331
LDS4798

69' : 18390-2259
ARA2241

70' : 18439-2130
KPP4118

71' : 18487-2230
ARA1900

74' : 18407-2139
RST5122

74' : 18411-2345
ARA2242

75' : 18484-2205
ARA1899

83' : 18377-2243
ARA1894

84' : 18377-2244
ARA1893

87' : 18452-2117
ARA1553

88' : 18386-2149
J 1633AB



Selections
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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.

18437-2240 DON 919 AB

 
 
18h 43m 42.74s -22° 40' 13.0" P.A. 80.00 sep 3.4 mag 8.10,12.70 Sp F7V dist. 74.85 pc (244.16 l.y.)
 
 
Coord 2000 18437-2240 Discov num DON 919 Comp AB Coord arcsec 2000 18 43 42.74 -22 40 13.0
Date first 1928 Date last 2016 Obs 5
Pa first 71 Pa last 80 P.A. Now (θ) 80°
Sep first 3.5 Sep last 3.376 Sep. Now (ρ) 3.376"
Mag pri 8.10 Mag sec 12.70 delta mag (ΔM) 4.6 Spectral class F7V (yellow-white)
Pri motion ra -034 Sec motion ra
Pri motion dec -071 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18437-2240 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 187196 18 43 43 -22 40 13 DON 919 AB 2016 5 80 3.4 8.10 12.70 4.60 <===
Show 187196 18 43 43 -22 40 13 DON 919 AC 2015 8 306 14.9 8.10 12.60 4.50
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius SAO 187196 HIP 91864 Tycho2 6859-00235-1
Gaia DR2 4078516651023103360 HD 172934 BD BD-22 4837 CD CD-2213240
Distance 74.85 Distance ly 244.16
 
 
WDS 18437-2240 DON 919 AB : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Don1937 Ma j Donner, H.F. 1937MmRAS..65...51R
Don1937 MemRAS 65, 51, 1937
Don1955 Ma - Donner, H.F. 1955POMic..11....1R
Don1955 Pub. Univ. Michigan Obs. 11, 1, 1955
Don1964 Ma j Donner, H.F. 1964POMic...9...73R
Don1964 Pub. Univ. Michigan Obs. 9, 73, 1964
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18437-2240 DON 919 AB 1944 3 72 3.3 7.80 12.70 F7V 184342.74-224013.0
18437-2240 DON 919 AB 2015 4 80 3.4 8.10 12.70 F7V 184342.74-224013.0
18437-2240 DON 919 AB 2016 5 80 3.4 8.10 12.70 F7V 184342.74-224013.0

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

 
 
WDS 18437-2240 DON 919 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18437-2240 DON 919 AB : MEASURES
 
 
No records found.

 
 
WDS 18437-2240 : VIRTUAL EYEPIECE
 
 

18437-2240 DON 919A mag 8.1 Sp F7V 18437-2240 DON 919B sep 3.1 P.A. 79.20 mag 12.7 18437-2240 DON 919C sep 14.2 P.A. 308.50 mag 12.6 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18437-2240 : ALADIN DSS IMAGE @ 18h 43m 42.74s -22° 40' 13.0"
 
 
 
 
WDS 18437-2240 DON 919 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18437-2240 DON 919AB distance=0' 18440-2237 RST5453 distance=6' 18433-2225 I 1381 distance=17' 18421-2307 SHN 38 distance=35' 18411-2236 ARA1896 distance=36' 18444-2316 ARA2246 distance=38' 18451-2315 CBL 173 distance=40' 18463-2224 SEE 360 distance=41' 18442-2325 RST3195 distance=45' 18425-2323 SHN 233 distance=47' 18472-2246 DON 923 distance=49' 18419-2329 ARA2243 distance=56' 18397-2249 SHN 231 distance=56' 18427-2336 BRT1542 distance=58' 18401-2322 SHN 232 distance=66' 18423-2344 ARA2244 distance=68' 18471-2331 LDS4798 distance=68' 18390-2259 ARA2241 distance=69' 18439-2130 KPP4118 distance=70' 18487-2230 ARA1900 distance=71' 18407-2139 RST5122 distance=74' 18411-2345 ARA2242 distance=74' 18484-2205 ARA1899 distance=75' 18377-2243 ARA1894 distance=83' 18377-2244 ARA1893 distance=84' 18452-2117 ARA1553 distance=87' 18386-2149 J 1633BC distance=87' 18386-2149 J 1633AB distance=88' 18381-2156 ARA1895 distance=91' 18453-2411 ALD 92 distance=94' 18416-2108 KPP 422 distance=97' 18406-2115 ARA1552 distance=97' 18509-2235 DON 927AB distance=101' 18509-2235 DON 927AC distance=101' 18508-2210 BU 1300 distance=104' 18374-2337 B 2456 distance=104' 18474-2108 B 1889 distance=106' 18510-2208 KPP 427 distance=106' 18434-2427 RST3193 distance=107' 18516-2235 SHN 236 distance=110' 18431-2051 ARA1159 distance=110' 18498-2350 TNN 13AB distance=110' 18498-2350 TNN 13AC distance=110' 18437-2430 B 401 distance=111' 18379-2124 OCC 33 distance=112' 18387-2114 ARA1551 distance=112' 18375-2130 ARA1548 distance=112' 18513-2201 HJ 5070 distance=113' 18395-2101 RST5121AB distance=116' 18395-2101 HJ 2833AC distance=116' 18361-2154 ARA1546 distance=116' 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 18437-2240 DON 919 AB 80 3.4
Show 18437-2240 DON 919 AC 306 14.9
Show 18440-2237 RST5453 211 0.1 6
Show 18433-2225 I 1381 37 1.3 17
Show 18421-2307 SHN 38 33 0.2 35
Show 18411-2236 ARA1896 327 12.3 36
Show 18444-2316 ARA2246 194 12.1 38
Show 18451-2315 CBL 173 94 25.2 40
Show 18463-2224 SEE 360 217 14.7 41
Show 18442-2325 RST3195 191 1.2 45
Show 18425-2323 SHN 233 -1 0.5 47
Show 18472-2246 DON 923 348 0.6 49
Show 18419-2329 ARA2243 105 8.6 56
Show 18397-2249 SHN 231 -1 0.1 56
Show 18427-2336 BRT1542 282 6.4 58
Show 18401-2322 SHN 232 -1 0.1 66
Show 18423-2344 ARA2244 225 10.4 68
Show 18471-2331 LDS4798 241 5.7 68
Show 18390-2259 ARA2241 114 7.3 69
Show 18439-2130 KPP4118 341 3.9 70
Show 18487-2230 ARA1900 103 12.0 71
Show 18407-2139 RST5122 189 2.1 74
Show 18411-2345 ARA2242 118 6.6 74
Show 18484-2205 ARA1899 261 10.9 75
Show 18377-2243 ARA1894 270 7.3 83
Show 18377-2244 ARA1893 137 12.5 84
Show 18452-2117 ARA1553 273 10.1 87
Show 18386-2149 J 1633 BC 149 7.5 87
Show 18386-2149 J 1633 AB 143 36.8 88
Show 18381-2156 ARA1895 26 16.0 91
Show 18453-2411 ALD 92 131 5.7 94
Show 18416-2108 KPP 422 299 4.7 97
Show 18406-2115 ARA1552 287 12.6 97
Show 18509-2235 DON 927 AB 68 3.3 101
Show 18509-2235 DON 927 AC 8 9.1 101
Show 18508-2210 BU 1300 254 18.0 104
Show 18374-2337 B 2456 225 8.0 104
Show 18474-2108 B 1889 218 0.8 106
Show 18510-2208 KPP 427 235 3.7 106
Show 18434-2427 RST3193 190 0.6 107
Show 18516-2235 SHN 236 -1 0.0 110
Show 18431-2051 ARA1159 84 11.7 110
Show 18498-2350 TNN 13 AB 311 6.2 110
Show 18498-2350 TNN 13 AC 234 8.3 110
Show 18437-2430 B 401 123 0.5 111
Show 18379-2124 OCC 33 -1 0.1 112
Show 18387-2114 ARA1551 137 6.1 112
Show 18375-2130 ARA1548 336 14.8 112
Show 18513-2201 HJ 5070 51 9.7 113
Show 18395-2101 RST5121 AB 21 4.2 116
Show 18395-2101 HJ 2833 AC 314 21.8 116

 
 
WDS 18437-2240 : COMPONENTS
 
 
  A B
B pa=79.2°
sep=3.12"
 
C pa=308.5°
sep=14.21"
pa=300.2°
sep=16.42"
 
 
18437-2240 A
 
 
Coord arcsec 2000 184342.74-224013.0 Mag 8.1 Spectral class F7V (yellow-white) PmRA -34.00
PmDE -71.0 SAO 187196 HIP 91864 Tycho2 6859-00235-1
HD 172934 BD BD-22 4837 CD CD-2213240
Tycho2
Tycho2 6859-00235-1 Pflag RAmdeg 280.92797292 DEmdeg -22.67045197
PmRA -36.3 PmDE -68.5 E RAmdeg 5 E DEmdeg 7
E pmRA 1.6 E pmDE 1.6 EpRAm 1991.53 EpDEm 1991.10
Num 8 Q RAmdeg 1.0 Q DEmdeg 0.7 Q pmRA 1.1
Q pmDE 0.8 BTmag 8.643 E BTmag 0.017 VTmag 8.095
E VTmag 0.012 Prox 999 TYC T HIP 91864
CCDM RAdeg 280.92806111 DEdeg -22.67029500 EpRA 1990 1.87
EpDE 1990 1.75 E RAdeg 5.0 E DEdeg 7.3 Posflg
Corr 0.2
SAO
SAO 187196 DelFlag RA1950 PmRA1950 -0.0017
DE1950 PmDE1950 -0.064 Vmag 8.1 SpType F5
Double code Source 25 CatNum 13000 DM CD-2213240
DMcomp BDsup HD 172934 M HD 0
GC RA1950rad 4.8899477 DE1950rad -0.39654706 PmRA2000 -0.0017
PmDE2000 -0.064
Hipparcos
Catalog H HIP 91864 Proxy RAhms 18 43 42.74
DEdms -22 40 13.0 Vmag 8 VarFlag R Vmag G
RAdeg 280.928 DEdeg -22.6703 AstroRef Plx 13.96
CCDM 18437-2240 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual S M HIP
Theta Rho HD 172934 BD BD-22 4837
CD CD-2213240 CP Dm number -22 4837 VIred 0.62
SpType F7V R SpType Coord arcsec 2000 184342.74-224013.0
Hipparcos 2
HIP 91864 Sn 7 So 0 Nc 1
RArad 4.9031197387 DErad -0.3956711623 Plx 13.36 PmRA -36.95
PmDE -67.37 E RArad 1.13 E DErad 0.64 E Plx 1.13
E pmRA 1.26 E pmDE 0.79 Hpmag 8.0886 E Hpmag 0.0013
SHp 0.011 VA 0 BV 0.544 E BV 0.015
VI 0.62
CCDM
Ccdm 18437-2240 RComp Comp A Note1
Note2 Discov num DRAs 0.71 DDEs -13.3
R dRAs 41 Year Theta Rho
Obs 3 Vmag 7.8 Sp F5 PmNote *
PmRA -24 PmDE -64 Dm number -22 4837 Cat1 BD
Name2 187196 Cat2 SAO HD 172934 M HD
ADS BDS M ADS BDS N IDS IDS 18377S2246A
HIC 91864
 
 
18437-2240 B
 
 
Coord arcsec 2000 184342.96-224012.4 Mag 12.7 Calc delta mag 4.6 Calc coord yes
CCDM
Ccdm 18437-2240 RComp Comp B Note1
Note2 Discov num DON 919 DRAs DDEs
R dRAs Year 1928 Theta 072 Rho 3.4
Obs 3 Vmag 12.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 18377S2246B
HIC 91864
 
 
18437-2240 C
 
 
Coord arcsec 2000 184341.94-224004.1 Mag 12.6 PmRA -5.00 PmDE -2.0
Calc delta mag 4.5 Calc coord yes
CCDM
Ccdm 18437-2240 RComp Comp C Note1
Note2 Discov num DON 919 DRAs -0.20 DDEs -5.2
R dRAs 41 Year 1944 Theta 287 Rho 15.3
Obs 1 Vmag 12.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 18377S2246C
HIC