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Doubles in session


Current system
18303-1321
TDT 917
HD 170494


Nearby doubles
15' : 18308-1309
BRT2754

22' : 18313-1306
EVS 8

25' : 18300-1257
HU 69

41' : 18328-1304
J 1745

48' : 18321-1400
HO 435AB

55' : 18322-1235
RST4016

56' : 18339-1339
SLE 192

58' : 18276-1240
SKF2390

58' : 18309-1418
BRT 592

63' : 18287-1420
J 1831

66' : 18299-1216
HU 68

67' : 18292-1216
KPP1683

71' : 18332-1418
SLE 185AB

71' : 18315-1430
BRT 593

76' : 18271-1223
SKF2389

82' : 18341-1421
RST4017

82' : 18337-1426
SLE 190

83' : 18323-1439
CHR 73

83' : 18269-1429
J 520

85' : 18355-1356
SLE 204

85' : 18359-1300
LDS6171

87' : 18261-1422
TDT 864

89' : 18357-1246
J 2133AB

90' : 18279-1444
J 1651

90' : 18283-1446
BRT 591

91' : 18242-1303
BRT2752



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

18303-1321 TDT 917 (HD 170494)

 
 
18h 30m 18.04s -13° 21' 17.1" P.A. 33.00 sep 7.6 mag 10.19,11.58 Sp B
 
 
Coord 2000 18303-1321 Discov num TDT 917 Comp Coord arcsec 2000 18 30 18.04 -13 21 17.1
Date first 1907 Date last 2015 Obs 13
Pa first 37 Pa last 32.9 P.A. Now (θ) 32.9°
Sep first 8.2 Sep last 7.605 Sep. Now (ρ) 7.605"
Mag pri 10.19 Mag sec 11.58 delta mag (ΔM) 1.39 Spectral class B (blue-white)
Pri motion ra +004 Sec motion ra -001
Pri motion dec -001 Sec motion dec -001
Notes
rPM=1.213
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 170494 Constellation Scutum SAO 161543 Tycho2 5702-01494-1
Gaia DR2 4104828995108639616 HD 170494 DM BD-13 5006
 
 
WDS 18303-1321 TDT 917 (HD 170494) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
No records found.

 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18303-1321 TDT 917 1991 1 6 2.3 10.19 11.58 183018.04-132117.1
18303-1321 TDT 917 2009 3 33 7.6 10.19 11.58 183018.04-132117.1
18303-1321 TDT 917 2010 9 35 7.1 10.19 11.58 B 183018.04-132117.1
18303-1321 TDT 917 2015 10 33 7.6 10.19 11.58 B 183018.04-132117.1

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

 
 
WDS 18303-1321 TDT 917 (HD 170494) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18303-1321 TDT 917 (HD 170494) : MEASURES
 
 
No records found.

 
 
WDS 18303-1321 (HD 170494) : VIRTUAL EYEPIECE
 
 

18303-1321 TDT 917A mag 10.19 Sp B 18303-1321 TDT 917B sep 7.5 P.A. 32.20 mag 11.58 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18303-1321 (HD 170494) : ALADIN DSS IMAGE @ 18h 30m 18.04s -13° 21' 17.1"
 
 
 
 
WDS 18303-1321 TDT 917 (HD 170494) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18303-1321 TDT 917 distance=0' 18308-1309 BRT2754 distance=15' 18313-1306 EVS 8 distance=22' 18300-1257 HU 69 distance=25' 18328-1304 J 1745 distance=41' 18321-1400 HO 435AB distance=48' 18321-1400 HO 435AC distance=48' 18321-1400 HO 435AD distance=48' 18321-1400 HO 435AE distance=48' 18322-1235 RST4016 distance=55' 18339-1339 SLE 192 distance=56' 18276-1240 SKF2390 distance=58' 18309-1418 BRT 592 distance=58' 18287-1420 J 1831 distance=63' 18299-1216 HU 68 distance=66' 18292-1216 KPP1683 distance=67' 18332-1418 SLE 185AB distance=71' 18332-1418 SLE 185AC distance=71' 18315-1430 BRT 593 distance=71' 18271-1223 SKF2389 distance=76' 18341-1421 RST4017 distance=82' 18337-1426 SLE 190 distance=82' 18323-1439 CHR 73 distance=83' 18269-1429 J 520 distance=83' 18355-1356 SLE 204 distance=85' 18359-1300 LDS6171 distance=85' 18261-1422 TDT 864 distance=87' 18357-1246 J 2133AB distance=89' 18357-1246 J 2133AD distance=89' 18357-1246 J 2133BC distance=89' 18279-1444 J 1651 distance=90' 18283-1446 BRT 591 distance=90' 18242-1303 BRT2752 distance=91' 18358-1246 J 2135AB distance=91' 18358-1246 J 2135BC distance=91' 18273-1441 BRT 590 distance=93' 18309-1456 FOX 231 distance=95' 18362-1407 SNA 92 distance=98' 18315-1456 J 2132 distance=100' 18367-1357 LEO 20AB distance=100' 18367-1357 LEO 20AC distance=100' 18254-1212 BRT2753 distance=100' 18255-1439 TOK 796 distance=105' 18349-1442 STF2337AB distance=106' 18349-1442 ARN 47AC distance=106' 18348-1449 J 2218 distance=109' 18242-1213 HU 63 distance=113' 18293-1517 HU 67 distance=117' 18381-1400 BU 135AB distance=120' 18381-1400 BU 135AC distance=120' 18381-1400 SLE 218AD 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 18303-1321 TDT 917 33 7.6
Show 18308-1309 BRT2754 328 4.6 15
Show 18313-1306 EVS 8 96 12.8 22
Show 18300-1257 HU 69 233 0.3 25
Show 18328-1304 J 1745 53 8.8 41
Show 18321-1400 HO 435 AB 228 1.7 48
Show 18321-1400 HO 435 AC 269 23.9 48
Show 18321-1400 HO 435 AD 80 16.7 48
Show 18321-1400 HO 435 AE 1 21.3 48
Show 18322-1235 RST4016 31 0.9 55
Show 18339-1339 SLE 192 194 8.5 56
Show 18276-1240 SKF2390 165 0.6 58
Show 18309-1418 BRT 592 321 6.4 58
Show 18287-1420 J 1831 349 5.6 63
Show 18299-1216 HU 68 118 3.1 66
Show 18292-1216 KPP1683 264 13.0 67
Show 18332-1418 SLE 185 AB 253 11.5 71
Show 18332-1418 SLE 185 AC 288 44.5 71
Show 18315-1430 BRT 593 355 5.6 71
Show 18271-1223 SKF2389 329 4.1 76
Show 18341-1421 RST4017 211 0.2 82
Show 18337-1426 SLE 190 34 14.1 82
Show 18323-1439 CHR 73 254 0.0 83
Show 18269-1429 J 520 294 5.7 83
Show 18355-1356 SLE 204 234 25.0 85
Show 18359-1300 LDS6171 270 5.0 85
Show 18261-1422 TDT 864 279 0.7 87
Show 18357-1246 J 2133 AB 15 7.4 89
Show 18357-1246 J 2133 AD 77 13.0 89
Show 18357-1246 J 2133 BC 321 5.6 89
Show 18279-1444 J 1651 76 3.2 90
Show 18283-1446 BRT 591 18 3.8 90
Show 18242-1303 BRT2752 92 2.5 91
Show 18358-1246 J 2135 AB 19 4.9 91
Show 18358-1246 J 2135 BC 21 4.9 91
Show 18273-1441 BRT 590 249 2.7 93
Show 18309-1456 FOX 231 8 8.9 95
Show 18362-1407 SNA 92 72 0.0 98
Show 18315-1456 J 2132 322 3.7 100
Show 18367-1357 LEO 20 AB 255 4.1 100
Show 18367-1357 LEO 20 AC 120 24.4 100
Show 18254-1212 BRT2753 165 4.0 100
Show 18255-1439 TOK 796 322 0.2 105
Show 18349-1442 STF2337 AB 296 16.6 106
Show 18349-1442 ARN 47 AC 80 377.8 106
Show 18348-1449 J 2218 169 6.6 109
Show 18242-1213 HU 63 306 4.1 113
Show 18293-1517 HU 67 322 1.7 117
Show 18381-1400 BU 135 AB 189 2.5 120
Show 18381-1400 BU 135 AC 78 15.0 120
Show 18381-1400 SLE 218 AD 338 120.7 120

 
 
WDS 18303-1321 : COMPONENTS
 
 
  A
B pa=32.2°
sep=7.54"
 
 
18303-1321 A
 
 
Componente originario normalizzato AB Name HD 170494 Coord arcsec 2000 183018.04-132117.1 Mag 10.19
Spectral class B (blue-white) PmRA 4.00 PmDE -1.0 SAO 161543
Tycho2 5702-01494-1 HD 170494 DM BD-13 5006
Tycho2
Tycho2 5702-01494-1 Pflag RAmdeg 277.57515357 DEmdeg -13.35474016
PmRA 6.4 PmDE -1.0 E RAmdeg 24 E DEmdeg 28
E pmRA 1.9 E pmDE 1.8 EpRAm 1989.87 EpDEm 1988.97
Num 3 Q RAmdeg 1.2 Q DEmdeg 0.4 Q pmRA 1.2
Q pmDE 0.4 BTmag 10.369 E BTmag 0.037 VTmag 10.238
E VTmag 0.046 Prox 745 TYC T HIP
CCDM RAdeg 277.57513861 DEdeg -13.35473778 EpRA 1990 1.85
EpDE 1990 1.79 E RAdeg 23.8 E DEdeg 28.4 Posflg
Corr -0.1
SAO
SAO 161543 DelFlag RA1950 PmRA1950 0.005
DE1950 PmDE1950 0.027 Vmag 9.2 SpType B9
Double code Source 20 CatNum 6324 DM BD-13 5006
DMcomp A BDsup HD 170494 M HD 1
GC RA1950rad 4.83227646 DE1950rad -0.23369242 PmRA2000 0.0052
PmDE2000 0.029
 
 
18303-1321 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 183018.32-132110.7 Mag 11.58 PmRA -1.00
PmDE -1.0 Calc delta mag 1.39 Calc coord yes