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Doubles in session


Current system
18349-4801
HJ 5047
HD 171020


Nearby doubles
10' : 18339-4759
UC 3611

13' : 18360-4807
UC 3623

15' : 18349-4746
UC 3617

17' : 18354-4816
BRT1066

26' : 18340-4825
BRT1063

27' : 18326-4814
UC 3605

31' : 18339-4732
UC 3610

34' : 18382-4804
BRT1070

35' : 18336-4833
CPO 590

36' : 18318-4819
KPP 578

37' : 18375-4736
UC 3627

39' : 18350-4838
I 635

40' : 18310-4802
ARY 75AB

40' : 18309-4801
HJ 5045

42' : 18313-4821
HJ 5046

51' : 18341-4850
UC 3613

52' : 18329-4848
UC 3607

53' : 18330-4850
UC 3608

54' : 18331-4852
RST 990

54' : 18340-4708
UC 3612

56' : 18294-4752
TDT 907

63' : 18374-4704
HJ 5049

63' : 18410-4750
KPP4115

63' : 18348-4658
UC 3616

66' : 18329-4658
UC 3606

68' : 18375-4659
LDS 648



Selections
Full WDS
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.

18349-4801 HJ 5047 (HD 171020)

 
 
18h 34m 51.20s -48° 00' 46.9" P.A. 171.00 sep 45.2 mag 8.36,8.88 Sp B8
 
 
Coord 2000 18349-4801 Discov num HJ 5047 Comp Coord arcsec 2000 18 34 51.20 -48 00 46.9
Date first 1903 Date last 2015 Obs 11
Pa first 173 Pa last 171.3 P.A. Now (θ) 171.3°
Sep first 43.1 Sep last 45.231 Sep. Now (ρ) 45.231"
Mag pri 8.36 Mag sec 8.88 delta mag (ΔM) 0.52 Spectral class B8 (blue-white)
Pri motion ra +002 Sec motion ra +009
Pri motion dec -008 Sec motion dec -028
Notes N (See Notes)
rPM=0.72
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 171020 Constellation Telescopium SAO 229120 Tycho2 8364-00250-1
Gaia DR2 6704961995132703616 HD 171020 DM CP-48 9862
 
 
WDS 18349-4801 HJ 5047 (HD 171020) : NOTES
 
 
discov_num notes refcode
HJ 5047 B is CD-48@12597.
 
 
REFERENCES
 
 
refcode metd author reference
HJ_1826 Mb - Herschel, J.F.W. 1826MmRAS...2..459H
HJ_1826 MemRAS 2, 459, 1826
HJ_1829a Mb - Herschel, J.F.W. 1829MmRAS...3...47H
HJ_1829a MemRAS 3, 47, 1829
HJ_1829b Mb - Herschel, J.F.W. 1829MmRAS...3..177H
HJ_1829b MemRAS 3, 177, 1829
HJ_1831 Ma - Herschel, J.F.W. 1831MmRAS...4..331H
HJ_1831 +Mb MemRAS 4, part 2, 331, 1831
HJ_1833a Ma - Herschel, J.F.W. 1833MmRAS...5...13H
HJ_1833a +Mb MemRAS 5, 13, 1833
HJ_1833b orb - Herschel, J.F.W. 1833MmRAS...5..171H
HJ_1833b MemRAS 5, 171, 1833
HJ_1833c Mb - Herschel, J.F.W. 1833MmRAS...6....1H
HJ_1833c MemRAS 6, 1, 1833
HJ_1833d orb - Herschel, J.F.W. 1833MmRAS...6..149H
HJ_1833d MemRAS 6, 149, 1833
HJ_1835 Ma - Herschel, J.F.W. 1835MmRAS...8...37H
HJ_1835 +Mb MemRAS 8, 37, 1835
HJ_1836 Mb - Herschel, J.F.W. 1836MmRAS...9..193H
HJ_1836 MemRAS 9, 193, 1836
HJ_1847a Ma j Herschel, J.F.W. .
HJ_1847a +Mb Cape Results, London, 1847 (Cape of Good Hope Astronomical Observations 1834-1838)
HJ_1847b Ma j Herschel, J.F.W. .
HJ_1847b Cape Results, London, 1847
HJ_1850 orb - Herschel, J.F.W. 1850MmRAS..18...47H
HJ_1850 MemRAS 18, 47, 1850
HJ_1870 Mb - Herschel, J.F.W. 1870MmRAS..38....1H
HJ_1870 MemRAS 38, 1, 1870
HJ_1874A - Herschel, J.F.W. 1874MNRAS..35...28B
HJ_1874A cited by Burnham (MNRAS 35, 28, 1874)
HJ_1875A Ma - Herschel, J.F.W. 1875AN.....85..323D
HJ_1875A +Mb cited by Doberck, 1875 (see Dob1875b,f,g,h)
HJ_1880A Ma - Herschel, J.F.W. 1880Obs.....3..508G
HJ_1880A +Mb cited by Gledhill (Obs 3, 508, 1880)
HJ_1880B Mb - Herschel, J.F.W. 1880MNRAS..40..497B
HJ_1880B cited by Burnham (MNRAS 40, 497, 1880)
HJ_1897A Ma j Herschel, J.F.W. 1897MNRAS..57..541S
HJ_1897A cited by See (MNRAS 57, 541, 1897)
HJ_1905A Ma - Herschel, J.F.W. 1905LicOB...3..147A
HJ_1905A +Mb cited by Aitken (Lick Obs. Bull. 3, 147, 1905)
HJ_1906A Ma - Herschel, J.F.W. 1906MmRAS..56....1L
HJ_1906A +Mb cited by Lewis (MemRAS 56, 1, 1906)
HJ_1906B Ma - Herschel, J.F.W. 1906QB821.B972.....
HJ_1906B +Mb cited in BDS (Burnham Double Star Cat.), 1906
HJ_1927A Mb - Herschel, J.F.W. 1927sdsc.book......
HJ_1927A cited in SDS (Southern Double Star Catalog), 1927
HJ_1932A Mb - Herschel, J.F.W. 1932QB821.A43......
HJ_1932A cited in ADS (Aitken Double Star Cat.), 1932
HJ_9999 M j Herschel, J.F.W. ...................
HJ_9999 +Ma Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18349-4801 HJ 5047 2000 8 172 44.9 8.36 8.88 B8 N D 183451.20-480046.9
18349-4801 HJ 5047 2010 10 171 45.1 8.36 8.88 B8 N 183451.20-480046.9
18349-4801 HJ 5047 2015 11 171 45.2 8.36 8.88 B8 N 183451.20-480046.9

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

 
 
WDS 18349-4801 HJ 5047 (HD 171020) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18349-4801 HJ 5047 (HD 171020) : MEASURES
 
 
No records found.

 
 
WDS 18349-4801 (HD 171020) : VIRTUAL EYEPIECE
 
 

18349-4801 HJ 5047A mag 8.36 Sp B8 18349-4801 HJ 5047B sep 44.9 P.A. 174.20 mag 8.88 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 18349-4801 (HD 171020) : ALADIN DSS IMAGE @ 18h 34m 51.20s -48° 00' 46.9"
 
 
 
 
WDS 18349-4801 HJ 5047 (HD 171020) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18349-4801 HJ 5047 distance=0' 18339-4759 UC 3611 distance=10' 18360-4807 UC 3623 distance=13' 18349-4746 UC 3617 distance=15' 18354-4816 BRT1066 distance=17' 18340-4825 BRT1063 distance=26' 18326-4814 UC 3605 distance=27' 18339-4732 UC 3610 distance=31' 18382-4804 BRT1070 distance=34' 18336-4833 CPO 590 distance=35' 18318-4819 KPP 578 distance=36' 18375-4736 UC 3627 distance=37' 18350-4838 I 635 distance=39' 18310-4802 ARY 75AB distance=40' 18310-4802 ARY 75AC distance=40' 18309-4801 HJ 5045 distance=40' 18313-4821 HJ 5046 distance=42' 18341-4850 UC 3613 distance=51' 18329-4848 UC 3607 distance=52' 18330-4850 UC 3608 distance=53' 18331-4852 RST 990 distance=54' 18340-4708 UC 3612 distance=54' 18294-4752 TDT 907 distance=56' 18374-4704 HJ 5049 distance=63' 18410-4750 KPP4115 distance=63' 18348-4658 UC 3616 distance=63' 18329-4658 UC 3606 distance=66' 18375-4659 LDS 648 distance=68' 18417-4815 UC 3639 distance=70' 18381-4659 I 1375Ba,Bb distance=71' 18381-4659 SKF1422AB distance=71' 18416-4737 UC 3638 distance=73' 18291-4713 CPO 585 distance=76' 18397-4704 CPO 596 distance=76' 18361-4915 UC 3624 distance=76' 18392-4657 I 1376 distance=78' 18426-4740 HJ 5054 distance=81' 18269-4745 I 632 distance=82' 18275-4840 BRT1056 distance=84' 18329-4927 BRT1062 distance=88' 18387-4922 HDS2642 distance=90' 18436-4746 UC 3656 distance=90' 18366-4630 UC 3626 distance=93' 18296-4643 I 1367 distance=95' 18258-4735 BRT1051 distance=96' 18326-4936 RST9007 distance=98' 18308-4934 CPO 588 distance=102' 18447-4736 I 1029 distance=103' 18437-4705 RST 999 distance=106' 18268-4910 ALD 70 distance=106' 18266-4909 UC 3584 distance=107' 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 18349-4801 HJ 5047 171 45.2
Show 18339-4759 UC 3611 283 20.9 10
Show 18360-4807 UC 3623 84 38.0 13
Show 18349-4746 UC 3617 138 36.6 15
Show 18354-4816 BRT1066 1 4.3 17
Show 18340-4825 BRT1063 116 4.8 26
Show 18326-4814 UC 3605 178 8.2 27
Show 18339-4732 UC 3610 157 41.8 31
Show 18382-4804 BRT1070 157 5.2 34
Show 18336-4833 CPO 590 287 5.9 35
Show 18318-4819 KPP 578 260 5.4 36
Show 18375-4736 UC 3627 151 52.7 37
Show 18350-4838 I 635 358 3.0 39
Show 18310-4802 ARY 75 AB 170 12.5 40
Show 18310-4802 ARY 75 AC 47 17.7 40
Show 18309-4801 HJ 5045 20 7.9 40
Show 18313-4821 HJ 5046 76 7.4 42
Show 18341-4850 UC 3613 100 21.6 51
Show 18329-4848 UC 3607 224 48.1 52
Show 18330-4850 UC 3608 344 73.6 53
Show 18331-4852 RST 990 336 2.3 54
Show 18340-4708 UC 3612 155 151.5 54
Show 18294-4752 TDT 907 247 1.5 56
Show 18374-4704 HJ 5049 246 19.3 63
Show 18410-4750 KPP4115 1 1.8 63
Show 18348-4658 UC 3616 95 63.6 63
Show 18329-4658 UC 3606 66 20.1 66
Show 18375-4659 LDS 648 270 11.1 68
Show 18417-4815 UC 3639 96 32.1 70
Show 18381-4659 I 1375 Ba,Bb 312 0.8 71
Show 18381-4659 SKF1422 AB 175 16.6 71
Show 18416-4737 UC 3638 32 50.2 73
Show 18291-4713 CPO 585 342 5.8 76
Show 18397-4704 CPO 596 181 11.8 76
Show 18361-4915 UC 3624 287 9.2 76
Show 18392-4657 I 1376 3 1.7 78
Show 18426-4740 HJ 5054 326 16.2 81
Show 18269-4745 I 632 111 2.1 82
Show 18275-4840 BRT1056 171 3.4 84
Show 18329-4927 BRT1062 179 5.3 88
Show 18387-4922 HDS2642 176 1.4 90
Show 18436-4746 UC 3656 254 141.6 90
Show 18366-4630 UC 3626 87 31.5 93
Show 18296-4643 I 1367 174 0.4 95
Show 18258-4735 BRT1051 141 3.8 96
Show 18326-4936 RST9007 42 4.1 98
Show 18308-4934 CPO 588 275 3.3 102
Show 18447-4736 I 1029 95 2.3 103
Show 18437-4705 RST 999 257 3.6 106
Show 18268-4910 ALD 70 338 1.4 106
Show 18266-4909 UC 3584 281 10.2 107

 
 
WDS 18349-4801 : COMPONENTS
 
 
  A
B pa=174.2°
sep=44.94"
 
 
18349-4801 A
 
 
Componente originario normalizzato AB Name HD 171020 Coord arcsec 2000 183451.20-480046.9 Mag 8.36
Spectral class B8 (blue-white) PmRA 2.00 PmDE -8.0 SAO 229120
Tycho2 8364-00250-1 HD 171020 DM CP-48 9862
Tycho2
Tycho2 8364-00250-1 Pflag RAmdeg 278.71335085 DEmdeg -48.01304121
PmRA 5.9 PmDE -12.6 E RAmdeg 6 E DEmdeg 8
E pmRA 1.9 E pmDE 1.8 EpRAm 1991.69 EpDEm 1991.49
Num 3 Q RAmdeg 1.7 Q DEmdeg 0.0 Q pmRA 1.7
Q pmDE 0.0 BTmag 8.335 E BTmag 0.017 VTmag 8.356
E VTmag 0.015 Prox 447 TYC T HIP
CCDM RAdeg 278.71333083 DEdeg -48.01301222 EpRA 1990 1.80
EpDE 1990 1.71 E RAdeg 6.1 E DEdeg 7.7 Posflg
Corr -0.2
SAO
SAO 229120 DelFlag RA1950 PmRA1950 0.0009
DE1950 PmDE1950 -0.013 Vmag 8.7 SpType B8
Double code Source 48 CatNum 17495 DM CP-48 9862
DMcomp BDsup HD 171020 M HD 0
GC RA1950rad 4.8479321 DE1950rad -0.83867876 PmRA2000 0.0008
PmDE2000 -0.015
CCDM
Ccdm 18349-4801 RComp Comp A Note1
Note2 Discov num DRAs -2.80 DDEs 13.2
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.4 Sp B8 PmNote *
PmRA 9 PmDE -13 Dm number -4812596 Cat1 CD
Name2 229120 Cat2 SAO HD 171020 M HD
ADS BDS M ADS BDS N IDS IDS 18273S4806A
HIC
 
 
18349-4801 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 183451.66-480131.6 Mag 8.88 PmRA 9.00
PmDE -28.0 Tycho2 8364-00700-1 Calc delta mag 0.52 Calc coord yes
Tycho2
Tycho2 8364-00700-1 Pflag RAmdeg 278.71612994 DEmdeg -48.02535903
PmRA 13.0 PmDE -31.1 E RAmdeg 10 E DEmdeg 13
E pmRA 1.9 E pmDE 1.9 EpRAm 1991.47 EpDEm 1991.16
Num 3 Q RAmdeg 2.4 Q DEmdeg 0.8 Q pmRA 2.5
Q pmDE 0.8 BTmag 9.472 E BTmag 0.024 VTmag 8.882
E VTmag 0.018 Prox 447 TYC T HIP
CCDM RAdeg 278.71608528 DEdeg -48.02528722 EpRA 1990 1.78
EpDE 1990 1.71 E RAdeg 10.1 E DEdeg 13.2 Posflg
Corr -0.2
CCDM
Ccdm 18349-4801 RComp Comp B Note1
Note2 Discov num HJ 5047 DRAs -2.20 DDEs -32.8
R dRAs 10 Year 1913 Theta 173 Rho 42.8
Obs 1 Vmag 8.5 Sp PmNote *
PmRA 8 PmDE -46 Dm number -4812597 Cat1 CD
Name2 229122 Cat2 SAO HD M HD
ADS BDS M ADS BDS N IDS IDS 18273S4806B
HIC