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Doubles in session


Current system
17521-6024
HJ 4979 AB
HD 161918


Nearby doubles
15' : 17516-6010
HDO 278AB

20' : 17526-6043
UC 3435

31' : 17483-6035
TDT 514

31' : 17484-6010
UC 3415

40' : 17476-6044
UC 3410

45' : 17482-6058
TDT 513

47' : 17499-6107
TDT 524

49' : 17585-6012
UC 3461

52' : 17478-6105
NSN 372

53' : 17449-6022
UC 3397

54' : 17477-5941
UC 3412

55' : 17594-6028
TDT 616

56' : 17554-5934
JSP 740

61' : 17509-6123
UC 3426

61' : 17463-5942
UC 3401

61' : 17473-6114
UC 3407

61' : 17553-5928
UC 3447

64' : 17435-6027
UC 3392

67' : 17433-6009
I 609

76' : 17556-5913
JSP 741AB

77' : 18022-6010
I 619

77' : 17430-5947
UC 3389

77' : 17417-6021
FIN 259

78' : 17462-5920
HDS2512

80' : 17562-6137
RST5095

81' : 18016-5947
UC 3476



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.

17521-6024 HJ 4979 AB (HD 161918)

 
 
17h 52m 04.74s -60° 23' 37.0" P.A. 238.00 sep 10.2 mag 7.49,10.02 Sp F0/2IV dist. 107.87 pc (351.87 l.y.)
 
 
Coord 2000 17521-6024 Discov num HJ 4979 Comp AB Coord arcsec 2000 17 52 04.74 -60 23 37.0
Date first 1835 Date last 2020 Obs 17
Pa first 240 Pa last 237.5 P.A. Now (θ) 237.5°
Sep first 10.0 Sep last 10.224 Sep. Now (ρ) 10.224"
Mag pri 7.49 Mag sec 10.02 delta mag (ΔM) 2.53 Spectral class F0/2IV (yellow-white)
Pri motion ra +017 Sec motion ra +017
Pri motion dec -068 Sec motion dec -068
Notes W
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 161918 Constellation Pavo SAO 254059 HIP 87447
Tycho2 9054-00987-1 HD 161918 GC 24215 CP CP-60 6953
Distance 107.87 Distance ly 351.87
 
 
WDS 17521-6024 HJ 4979 AB (HD 161918) : NOTES
 
 
No records found.

 
 
DISCOVERER
 
 
idgroup discov author
1 HJ Herschel, J.F.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17521-6024 HJ 4979 AB 2016 15 237 10.0 7.49 10.02 F0/2IV W 175204.74-602337.0
17521-6024 HJ 4979 AB 2020 16 238 10.2 7.49 10.02 F0/2IV W 175204.74-602337.0

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

 
 
WDS 17521-6024 HJ 4979 AB (HD 161918) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 17521-6024 HJ 4979 AB (HD 161918) : MEASURES
 
 
No records found.

 
 
WDS 17521-6024 (HD 161918) : VIRTUAL EYEPIECE
 
 

17521-6024 HJ 4979A mag 7.49 Sp F0/2IV 17521-6024 HJ 4979B sep 7.0 P.A. 217.80 mag 10.02 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 17521-6024 (HD 161918) : ALADIN DSS IMAGE @ 17h 52m 04.74s -60° 23' 37.0"
 
 
 
 
WDS 17521-6024 HJ 4979 AB (HD 161918) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

17521-6024 HJ 4979AB distance=0' 17516-6010 HDO 278AB distance=15' 17516-6010 DAM 685BC distance=15' 17526-6043 UC 3435 distance=20' 17483-6035 TDT 514 distance=31' 17484-6010 UC 3415 distance=31' 17476-6044 UC 3410 distance=40' 17482-6058 TDT 513 distance=45' 17499-6107 TDT 524 distance=47' 17585-6012 UC 3461 distance=49' 17478-6105 NSN 372 distance=52' 17449-6022 UC 3397 distance=53' 17477-5941 UC 3412 distance=54' 17594-6028 TDT 616 distance=55' 17554-5934 JSP 740 distance=56' 17509-6123 UC 3426 distance=61' 17463-5942 UC 3401 distance=61' 17473-6114 UC 3407 distance=61' 17553-5928 UC 3447 distance=61' 17435-6027 UC 3392 distance=64' 17433-6009 I 609 distance=67' 17556-5913 JSP 741AB distance=76' 17556-5913 JSP 741AC distance=76' 18022-6010 I 619 distance=77' 17430-5947 UC 3389 distance=77' 17417-6021 FIN 259 distance=77' 17462-5920 HDS2512 distance=78' 17562-6137 RST5095 distance=80' 18016-5947 UC 3476 distance=81' 17542-6143 JSP 738 distance=81' 18029-5959 JAW 45 distance=85' 17563-5905 JSP 745 distance=86' 17527-5854 UC 3437 distance=90' 17527-5853 UC 3436 distance=91' 17403-6001 UC 3381 distance=91' 17556-6156 UC 3448 distance=97' 17548-5849 UC 3443 distance=97' 17403-5945 HDS2500 distance=97' 18044-5953 RST5099 distance=98' 17457-5859 RST5092 distance=98' 18004-6142 RSS 466 distance=100' 17384-5956 HJ 4961 distance=106' 18045-6124 SWR 235 distance=109' 17488-6211 UC 3418 distance=110' 17371-6049 KPP1781 distance=113' 17578-6210 B 2423 distance=115' 17524-5830 FIN 301 distance=115' 17563-5833 YMG 89 distance=116' 18019-5856 UC 3477 distance=116' 18014-5851 UC 3475 distance=117' 17497-5827 TDT 521 distance=119' 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 17521-6024 HJ 4979 AB 238 10.2 0
Show 17516-6010 HDO 278 AB 345 36.9 15
Show 17516-6010 DAM 685 BC 62 3.8 15
Show 17526-6043 UC 3435 199 72.8 20
Show 17483-6035 TDT 514 106 0.6 31
Show 17484-6010 UC 3415 170 16.4 31
Show 17476-6044 UC 3410 161 42.5 40
Show 17482-6058 TDT 513 141 0.5 45
Show 17499-6107 TDT 524 211 0.6 47
Show 17585-6012 UC 3461 99 32.3 49
Show 17478-6105 NSN 372 137 3.4 52
Show 17449-6022 UC 3397 228 35.8 53
Show 17477-5941 UC 3412 56 168.6 54
Show 17594-6028 TDT 616 356 2.0 55
Show 17554-5934 JSP 740 270 0.9 56
Show 17509-6123 UC 3426 101 103.4 61
Show 17463-5942 UC 3401 349 46.6 61
Show 17473-6114 UC 3407 17 51.4 61
Show 17553-5928 UC 3447 228 34.8 61
Show 17435-6027 UC 3392 255 66.0 64
Show 17433-6009 I 609 115 2.7 67
Show 17556-5913 JSP 741 AB 274 3.0 76
Show 17556-5913 JSP 741 AC 149 7.1 76
Show 18022-6010 I 619 127 2.7 77
Show 17430-5947 UC 3389 208 39.6 77
Show 17417-6021 FIN 259 263 2.4 77
Show 17462-5920 HDS2512 294 0.1 78
Show 17562-6137 RST5095 255 3.1 80
Show 18016-5947 UC 3476 292 29.0 81
Show 17542-6143 JSP 738 144 0.3 81
Show 18029-5959 JAW 45 71 15.0 85
Show 17563-5905 JSP 745 118 5.8 86
Show 17527-5854 UC 3437 33 58.3 90
Show 17527-5853 UC 3436 33 55.6 91
Show 17403-6001 UC 3381 228 37.8 91
Show 17556-6156 UC 3448 21 47.2 97
Show 17548-5849 UC 3443 217 104.2 97
Show 17403-5945 HDS2500 36 0.3 97
Show 18044-5953 RST5099 343 0.2 98
Show 17457-5859 RST5092 301 4.3 98
Show 18004-6142 RSS 466 90 6.1 100
Show 17384-5956 HJ 4961 153 16.9 106
Show 18045-6124 SWR 235 82 15.2 109
Show 17488-6211 UC 3418 104 50.3 110
Show 17371-6049 KPP1781 217 13.8 113
Show 17578-6210 B 2423 31 0.3 115
Show 17524-5830 FIN 301 33 0.4 115
Show 17563-5833 YMG 89 31 1.9 116
Show 18019-5856 UC 3477 27 39.5 116
Show 18014-5851 UC 3475 174 43.4 117
Show 17497-5827 TDT 521 339 10.1 119

 
 
WDS 17521-6024 : COMPONENTS
 
 
  A
B pa=217.8°
sep=6.95"
 
 
17521-6024 A
 
 
Name HD 161918 Coord arcsec 2000 175204.74-602337.0 Mag 7.49 Spectral class F0/2IV (yellow-white)
PmRA 17.00 PmDE -68.0 SAO 254059 HIP 87447
Tycho2 9054-00987-1 HD 161918 GC 24215 CP CP-60 6953
Tycho2
Tycho2 9054-00987-1 Pflag RAmdeg 268.01974897 DEmdeg -60.39359792
PmRA 20.2 PmDE -62.6 E RAmdeg 5 E DEmdeg 5
E pmRA 1.7 E pmDE 1.4 EpRAm 1991.60 EpDEm 1991.54
Num 10 Q RAmdeg 2.4 Q DEmdeg 1.4 Q pmRA 2.4
Q pmDE 1.4 BTmag 7.836 E BTmag 0.015 VTmag 7.490
E VTmag 0.011 Prox 102 TYC T HIP 87447
CCDM A RAdeg 268.01965806 DEdeg -60.39345806 EpRA 1990 1.88
EpDE 1990 1.96 E RAdeg 4.5 E DEdeg 5.0 Posflg
Corr 0.0
SAO
SAO 254059 DelFlag RA1950 PmRA1950 0.0061
DE1950 PmDE1950 -0.073 Vmag 7.5 SpType F0
Double code Source 70 CatNum 24215 DM CP-60 6953
DMcomp BDsup HD 161918 M HD 0
GC 24215 RA1950rad 4.65811001 DE1950rad -1.05383795 PmRA2000 0.0053
PmDE2000 -0.074
Hipparcos
Catalog H HIP 87447 Proxy RAhms 17 52 04.72
DEdms -60 23 36.4 Vmag 7.46 VarFlag R Vmag H
RAdeg 268.02 DEdeg -60.3934 AstroRef A Plx 11.3
CCDM 17521-6024 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 238 Rho 10.239 HD 161918 BD
CD CP CP-60 6953 Dm number -60 6953 VIred 0.34
SpType F0/F2IV R SpType Coord arcsec 2000 175204.72-602336.4
Hipparcos 2
HIP 87447 Sn 15 So 3 Nc 2
RArad 4.6778253825 DErad -1.0540644546 Plx 9.27 PmRA 16.78
PmDE -67.39 E RArad 0.63 E DErad 0.57 E Plx 0.84
E pmRA 0.8 E pmDE 0.65 Hpmag 7.5423 E Hpmag 0.0041
SHp 0.021 VA 0 BV 0.338 E BV 0.011
VI 0.39
CCDM
Ccdm 17521-6024 RComp Comp A Note1
Note2 Discov num DRAs -0.89 DDEs 22.2
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.5 Sp F0 PmNote *
PmRA 44 PmDE -73 Dm number -60 6953 Cat1 CPD
Name2 254059 Cat2 SAO HD 161918 M HD
ADS BDS M ADS BDS N IDS IDS 17430S6022A
HIC 87447
 
 
17521-6024 B
 
 
Coord arcsec 2000 175204.17-602342.5 Mag 10.02 PmRA 17.00 PmDE -68.0
Calc delta mag 2.53 Calc coord yes
CCDM
Ccdm 17521-6024 RComp Comp B Note1
Note2 Discov num HJ 4979 DRAs -2.06 DDEs 16.7
R dRAs 90 Year 1887 Theta 239 Rho 10.4
Obs 3 Vmag 10.5 Sp PmNote
PmRA 44 PmDE -73 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 17430S6022B
HIC