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Current system
18421-2307
SHN 38


Nearby doubles
17' : 18425-2323
SHN 233

23' : 18419-2329
ARA2243

30' : 18427-2336
BRT1542

33' : 18401-2322
SHN 232

33' : 18444-2316
ARA2246

33' : 18442-2325
RST3195

34' : 18411-2236
ARA1896

35' : 18437-2240
DON 919AB

38' : 18423-2344
ARA2244

38' : 18397-2249
SHN 231

40' : 18411-2345
ARA2242

40' : 18440-2237
RST5453

42' : 18451-2315
CBL 173

45' : 18390-2259
ARA2241

46' : 18433-2225
I 1381

66' : 18377-2243
ARA1894

66' : 18377-2244
ARA1893

71' : 18471-2331
LDS4798

72' : 18374-2337
B 2456

73' : 18463-2224
SEE 360

74' : 18472-2246
DON 923

78' : 18453-2411
ALD 92

82' : 18434-2427
RST3193

86' : 18367-2348
KPP 420

86' : 18437-2430
B 401

90' : 18413-2436
B 399



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18421-2307 SHN 38

 
 
18h 42m 07.62s -23° 07' 22.5" P.A. 33.00 sep 0.2 mag 11.80,12.10
 
 
Coord 2000 18421-2307 Discov num SHN  38 Comp Coord arcsec 2000 18 42 07.62 -23 07 22.5
Date first 1996 Date last 2021 Obs 2
Pa first 27 Pa last 33.1 P.A. Now (θ) 33.1°
Sep first 0.3 Sep last 0.227 Sep. Now (ρ) 0.227"
Mag pri 11.80 Mag sec 12.10 delta mag (ΔM) 0.3 Spectral class
Pri motion ra +004 Sec motion ra
Pri motion dec +010 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius Tycho2 6859-01443-1 Gaia DR2 4078403362625372416
 
 
WDS 18421-2307 SHN 38 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Shn1993 O j Schneider, G. & Anderson, C. 1993PASP..105..367S
Shn1993 PASP 105, 367, 1993
Shn1998 Hf j Schneider, G., Hershey, J.L., & Wenz, M.T. 1998PASP..110.1012S
Shn1998 PASP 110, 1012, 1998
Shn2004 Hn - Schneider, G., Song, I., Zuckerman, B., Becklin, E., Lowrance, P., Macintosh, B., 2004AAS...205.1114S
Shn2004 Bessell, M., Dumas, C., & Chauvin, G.
Shn2004 BAAS 205, 1114, 2004 (all data also in Son2006) 2006ApJ...652..724
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18421-2307 SHN 38 1996 1 27 0.3 11.18   184207.62-230722.5
18421-2307 SHN 38 2021 2 33 0.2 11.80 12.10 184207.62-230722.5

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

 
 
WDS 18421-2307 SHN 38 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18421-2307 SHN 38 : MEASURES
 
 
No records found.

 
 
WDS 18421-2307 : VIRTUAL EYEPIECE
 
 

18421-2307 SHN 38A mag 11.8 18421-2307 SHN 38B sep 0.2 P.A. 30.90 mag 12.1 virtual eyepiece
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Radius:
Components only
 
 
WDS 18421-2307 : ALADIN DSS IMAGE @ 18h 42m 07.62s -23° 07' 22.5"
 
 
 
 
WDS 18421-2307 SHN 38 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18421-2307 SHN 38 distance=0' 18425-2323 SHN 233 distance=17' 18419-2329 ARA2243 distance=23' 18427-2336 BRT1542 distance=30' 18401-2322 SHN 232 distance=33' 18444-2316 ARA2246 distance=33' 18442-2325 RST3195 distance=33' 18411-2236 ARA1896 distance=34' 18437-2240 DON 919AB distance=35' 18437-2240 DON 919AC distance=35' 18423-2344 ARA2244 distance=38' 18397-2249 SHN 231 distance=38' 18411-2345 ARA2242 distance=40' 18440-2237 RST5453 distance=40' 18451-2315 CBL 173 distance=42' 18390-2259 ARA2241 distance=45' 18433-2225 I 1381 distance=46' 18377-2243 ARA1894 distance=66' 18377-2244 ARA1893 distance=66' 18471-2331 LDS4798 distance=71' 18374-2337 B 2456 distance=72' 18463-2224 SEE 360 distance=73' 18472-2246 DON 923 distance=74' 18453-2411 ALD 92 distance=78' 18434-2427 RST3193 distance=82' 18367-2348 KPP 420 distance=86' 18437-2430 B 401 distance=86' 18413-2436 B 399 distance=90' 18407-2139 RST5122 distance=91' 18365-2354 ARA2240AB distance=91' 18365-2354 ARA2240BC distance=91' 18365-2353 ARA2239 distance=91' 18364-2353 ARA2238 distance=91' 18381-2156 ARA1895 distance=92' 18365-2355 ARA2319 distance=92' 18386-2149 J 1633BC distance=92' 18386-2149 J 1633AB distance=93' 18363-2355 ARA2237 distance=94' 18487-2230 ARA1900 distance=99' 18439-2130 KPP4118 distance=101' 18349-2326 HDS2636 distance=101' 18349-2256 ARA2236 distance=102' 18362-2409 J 2219 distance=102' 18484-2205 ARA1899 distance=108' 18474-2430 BRT3076 distance=110' 18361-2154 ARA1546 distance=112' 18353-2205 WNO 22 distance=113' 18498-2350 TNN 13AB distance=115' 18498-2350 TNN 13AC distance=115' 18406-2115 ARA1552 distance=116' 18375-2130 ARA1548 distance=118' 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 18421-2307 SHN 38 33 0.2
Show 18425-2323 SHN 233 -1 0.5 17
Show 18419-2329 ARA2243 105 8.6 23
Show 18427-2336 BRT1542 282 6.4 30
Show 18401-2322 SHN 232 -1 0.1 33
Show 18444-2316 ARA2246 194 12.1 33
Show 18442-2325 RST3195 191 1.2 33
Show 18411-2236 ARA1896 327 12.3 34
Show 18437-2240 DON 919 AB 80 3.4 35
Show 18437-2240 DON 919 AC 306 14.9 35
Show 18423-2344 ARA2244 225 10.4 38
Show 18397-2249 SHN 231 -1 0.1 38
Show 18411-2345 ARA2242 118 6.6 40
Show 18440-2237 RST5453 211 0.1 40
Show 18451-2315 CBL 173 94 25.2 42
Show 18390-2259 ARA2241 114 7.3 45
Show 18433-2225 I 1381 37 1.3 46
Show 18377-2243 ARA1894 270 7.3 66
Show 18377-2244 ARA1893 137 12.5 66
Show 18471-2331 LDS4798 241 5.7 71
Show 18374-2337 B 2456 225 8.0 72
Show 18463-2224 SEE 360 217 14.7 73
Show 18472-2246 DON 923 348 0.6 74
Show 18453-2411 ALD 92 131 5.7 78
Show 18434-2427 RST3193 190 0.6 82
Show 18367-2348 KPP 420 93 3.8 86
Show 18437-2430 B 401 123 0.5 86
Show 18413-2436 B 399 49 3.5 90
Show 18407-2139 RST5122 189 2.1 91
Show 18365-2354 ARA2240 AB 317 10.4 91
Show 18365-2354 ARA2240 BC 3 12.6 91
Show 18365-2353 ARA2239 249 8.8 91
Show 18364-2353 ARA2238 341 13.6 91
Show 18381-2156 ARA1895 26 16.0 92
Show 18365-2355 ARA2319 3 11.4 92
Show 18386-2149 J 1633 BC 149 7.5 92
Show 18386-2149 J 1633 AB 143 36.8 93
Show 18363-2355 ARA2237 133 9.7 94
Show 18487-2230 ARA1900 103 12.0 99
Show 18439-2130 KPP4118 341 3.9 101
Show 18349-2326 HDS2636 57 0.3 101
Show 18349-2256 ARA2236 38 7.3 102
Show 18362-2409 J 2219 313 4.6 102
Show 18484-2205 ARA1899 261 10.9 108
Show 18474-2430 BRT3076 94 3.5 110
Show 18361-2154 ARA1546 173 10.4 112
Show 18353-2205 WNO 22 269 11.4 113
Show 18498-2350 TNN 13 AB 311 6.2 115
Show 18498-2350 TNN 13 AC 234 8.3 115
Show 18406-2115 ARA1552 287 12.6 116
Show 18375-2130 ARA1548 336 14.8 118

 
 
WDS 18421-2307 : COMPONENTS
 
 
  A
B pa=30.9°
sep=0.22"
 
 
18421-2307 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 184207.62-230722.5 Mag 11.8 PmRA 4.00
PmDE 10.0 Tycho2 6859-01443-1
Tycho2
Tycho2 6859-01443-1 Pflag RAmdeg 280.53178331 DEmdeg -23.12292104
PmRA 0.7 PmDE 8.0 E RAmdeg 109 E DEmdeg 122
E pmRA 3.0 E pmDE 3.2 EpRAm 1962.13 EpDEm 1947.20
Num 4 Q RAmdeg 1.8 Q DEmdeg 1.4 Q pmRA 1.8
Q pmDE 1.4 BTmag 11.744 E BTmag 0.097 VTmag 11.278
E VTmag 0.110 Prox 705 TYC HIP
CCDM RAdeg 280.53178611 DEdeg -23.12292750 EpRA 1990 1.71
EpDE 1990 1.71 E RAdeg 139.5 E DEdeg 190.0 Posflg
Corr -0.2
 
 
18421-2307 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 184207.63-230722.3 Mag 12.1 Calc delta mag 0.3
Calc coord yes