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Doubles in session


Current system
18418-1909
J 2221 AB


Nearby doubles
19' : 18429-1917
OCC9184

20' : 18412-1928
OCC9183

36' : 18425-1943
ARA 761

38' : 18393-1859
ARA 760

43' : 18429-1829
ARA 488

46' : 18388-1928
BRT1541

46' : 18388-1853
FEN 33

50' : 18407-1957
ARA1158

55' : 18439-1954
STN 44

56' : 18441-1954
ARA1160

63' : 18374-1917
ARA 758

66' : 18371-1913
SEE 355

69' : 18406-2016
ARA1157

70' : 18436-2013
DON 920

71' : 18386-1816
ARA 486

75' : 18470-1912
HJ 2837

75' : 18465-1940
BRT1543

77' : 18365-1847
OCC 970

78' : 18369-1833
LEO 19

84' : 18386-2020
DON 917

85' : 18391-2025
ARA1155

87' : 18406-2034
OCC1080

89' : 18362-1950
ARA 756

93' : 18405-2040
OCC1079

95' : 18356-1833
RBR 10

96' : 18393-2038
ARA1156



Selections
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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18418-1909 J 2221 AB

 
 
18h 41m 44.78s -19° 09' 14.4" P.A. 254.00 sep 7.5 mag 10.03,11.70
 
 
Coord 2000 18418-1909 Discov num J  2221 Comp AB Coord arcsec 2000 18 41 44.78 -19 09 14.4
Date first 1942 Date last 2016 Obs 8
Pa first 265 Pa last 253.7 P.A. Now (θ) 253.7°
Sep first 5.0 Sep last 7.488 Sep. Now (ρ) 7.488"
Mag pri 10.03 Mag sec 11.70 delta mag (ΔM) 1.67 Spectral class
Pri motion ra +021 Sec motion ra -028
Pri motion dec +009 Sec motion dec -012
Notes
rPM=1.75
This double is not physical.
 
 
18418-1909 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 18 41 45 -19 09 14 J 2221 AB 2016 8 254 7.5 10.03 11.70 1.67 <===
Show 18 41 45 -19 09 14 J 2221 AC 2016 8 346 17.9 10.03 12.50 2.47
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius Gaia DR2 4092350637622230656
 
 
WDS 18418-1909 J 2221 AB : NOTES
 
 
No records found.

 
 
DISCOVERER
 
 
discov author
J Jonckheere, R.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
18418-1909 J 2221 AB 1942 1 265 5.0 10.38 12.10 -19 5127 184144.78-190914.4
18418-1909 J 2221 AB 1999 2 255 7.4 10.38 12.10 -19 5127 184144.78-190914.4
18418-1909 J 2221 AB 2010 4 254 7.3 10.03 11.70 -19 5127 184144.78-190914.4
18418-1909 J 2221 AB 2015 4 254 7.5 10.03 11.70 -19 5127 184144.78-190914.4
18418-1909 J 2221 AB 2016 8 254 7.5 10.03 11.70 -19 5127 184144.78-190914.4

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

 
 
WDS 18418-1909 J 2221 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18418-1909 J 2221 AB : MEASURES
 
 
No records found.

 
 
WDS 18418-1909 : VIRTUAL EYEPIECE
 
 

18418-1909 J 2221A mag 10.03 18418-1909 J 2221B sep 7.5 P.A. 253.70 mag 11.7 18418-1909 J 2221C sep 17.9 P.A. 345.90 mag 12.5 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 18418-1909 : ALADIN DSS IMAGE @ 18h 41m 44.78s -19° 09' 14.4"
 
 
 
 
WDS 18418-1909 J 2221 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18418-1909 J 2221AB distance=0' 18429-1917 OCC9184 distance=19' 18412-1928 OCC9183 distance=20' 18425-1943 ARA 761 distance=36' 18393-1859 ARA 760 distance=38' 18429-1829 ARA 488 distance=43' 18388-1928 BRT1541 distance=46' 18388-1853 FEN 33 distance=46' 18407-1957 ARA1158 distance=50' 18439-1954 STN 44 distance=55' 18441-1954 ARA1160 distance=56' 18374-1917 ARA 758 distance=63' 18371-1913 SEE 355 distance=66' 18406-2016 ARA1157 distance=69' 18436-2013 DON 920 distance=70' 18386-1816 ARA 486 distance=71' 18470-1912 HJ 2837 distance=75' 18465-1940 BRT1543 distance=75' 18365-1847 OCC 970 distance=77' 18369-1833 LEO 19 distance=78' 18386-2020 DON 917 distance=84' 18391-2025 ARA1155 distance=85' 18406-2034 OCC1080 distance=87' 18362-1950 ARA 756 distance=89' 18405-2040 OCC1079 distance=93' 18356-1833 RBR 10 distance=95' 18393-2038 ARA1156 distance=96' 18483-1935 B 2461 distance=97' 18412-1731 FEN 34 distance=99' 18479-1936 J 1657 distance=99' 18349-1925 ARA 755 distance=99' 18367-2019 HO 567 distance=101' 18482-1820 J 1636 distance=103' 18453-2039 EVS 37AB distance=103' 18453-2039 EVS 37AC distance=103' 18453-2039 EVS 37AD distance=103' 18453-2039 EVS 37AE distance=103' 18453-2039 EVS 37AF distance=103' 18453-2039 GAA 14Aa,Ab distance=103' 18453-2039 KRV 18AG distance=103' 18453-2039 KRV 18AH distance=103' 18480-1817 WSI 36 distance=104' 18431-2051 ARA1159 distance=104' 18442-1733 HLD 146 distance=104' 18377-1742 FEN 32 distance=104' 18480-1814 RST3198 distance=105' 18488-1836 KUI 88 distance=105' 18488-1838 RSS 491 distance=106' 18398-2052 OCC1078 distance=107' 18435-1725 RST3194 distance=108' 18372-2039 DON 914 distance=111' 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 18418-1909 J 2221 AB 254 7.5 0
Show 18418-1909 J 2221 AC 346 17.9 0
Show 18429-1917 OCC9184 -1 0.1 19
Show 18412-1928 OCC9183 -1 0.2 20
Show 18425-1943 ARA 761 242 6.9 36
Show 18393-1859 ARA 760 60 5.6 38
Show 18429-1829 ARA 488 167 20.8 43
Show 18388-1928 BRT1541 34 4.2 46
Show 18388-1853 FEN 33 248 2.6 46
Show 18407-1957 ARA1158 68 6.6 50
Show 18439-1954 STN 44 316 1.6 55
Show 18441-1954 ARA1160 184 8.4 56
Show 18374-1917 ARA 758 270 9.1 63
Show 18371-1913 SEE 355 241 11.1 66
Show 18406-2016 ARA1157 356 9.5 69
Show 18436-2013 DON 920 336 1.4 70
Show 18386-1816 ARA 486 20 14.6 71
Show 18470-1912 HJ 2837 89 11.2 75
Show 18465-1940 BRT1543 258 3.3 75
Show 18365-1847 OCC 970 -1 0.1 77
Show 18369-1833 LEO 19 251 3.2 78
Show 18386-2020 DON 917 51 1.1 84
Show 18391-2025 ARA1155 238 11.6 85
Show 18406-2034 OCC1080 -1 0.0 87
Show 18362-1950 ARA 756 325 9.5 89
Show 18405-2040 OCC1079 -1 0.0 93
Show 18356-1833 RBR 10 320 4.9 95
Show 18393-2038 ARA1156 16 15.8 96
Show 18483-1935 B 2461 197 6.7 97
Show 18412-1731 FEN 34 325 3.8 99
Show 18479-1936 J 1657 28 3.6 99
Show 18349-1925 ARA 755 77 13.1 99
Show 18367-2019 HO 567 165 1.3 101
Show 18482-1820 J 1636 78 7.1 103
Show 18453-2039 EVS 37 AB 128 3.1 103
Show 18453-2039 EVS 37 AC 67 10.8 103
Show 18453-2039 EVS 37 AD 156 10.6 103
Show 18453-2039 EVS 37 AE 271 11.5 103
Show 18453-2039 EVS 37 AF 330 18.2 103
Show 18453-2039 GAA 14 Aa,Ab 308 5.2 103
Show 18453-2039 KRV 18 AG 250 29.9 103
Show 18453-2039 KRV 18 AH 304 34.9 103
Show 18480-1817 WSI 36 262 15.8 104
Show 18431-2051 ARA1159 84 11.7 104
Show 18442-1733 HLD 146 194 2.2 104
Show 18377-1742 FEN 32 119 4.2 104
Show 18480-1814 RST3198 154 0.4 105
Show 18488-1836 KUI 88 145 0.4 105
Show 18488-1838 RSS 491 334 10.8 106
Show 18398-2052 OCC1078 -1 0.7 107
Show 18435-1725 RST3194 87 4.0 108

 
 
WDS 18418-1909 : COMPONENTS
 
 
  A B
B pa=253.7°
sep=7.49"
 
C pa=345.9°
sep=17.87"
pa=8.3°
sep=19.64"
 
 
18418-1909 A
 
 
Coord arcsec 2000 184144.78-190914.4 Mag 10.03 PmRA 21.00 PmDE 9.0
 
 
18418-1909 B
 
 
Coord arcsec 2000 184144.27-190916.5 Mag 11.7 PmRA -28.00 PmDE -12.0
Delta magnitude 1.67 Coordinate calculated yes
 
 
18418-1909 C
 
 
Coord arcsec 2000 184144.47-190857.1 Mag 12.5 PmRA 0.00 PmDE -1.0
Delta magnitude 2.47 Coordinate calculated yes