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Current system
18138-1847
HJ 594 AC


Nearby doubles
5' : 18137-1845
FEN 28

14' : 18147-1847
TOB 272AB

15' : 18137-1903
SKF 97

16' : 18135-1903
ARA 734

16' : 18143-1902
ARA 740

16' : 18138-1904
ARA 735

16' : 18140-1904
ARA 736

18' : 18143-1904
B 2859AB

18' : 18125-1847
ARA 460

19' : 18125-1852
VAT 2

20' : 18150-1857
RST3167

21' : 18124-1840
KPP4092

21' : 18150-1900
ARA 741

22' : 18125-1901
SKF 95

24' : 18155-1840
SEE 349

24' : 18141-1912
ARA 738AB

25' : 18153-1900
BU 284AB

26' : 18120-1852
OCC9177

28' : 18130-1914
LDS 629

30' : 18158-1855
OCC 566

30' : 18156-1835
ARA 465

30' : 18150-1912
LEO 15AB

32' : 18118-1903
I 1479

32' : 18133-1817
ARA 462

32' : 18130-1819
TDT 739

33' : 18126-1917
ARA 732



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.

18138-1847 HJ 594 AC

 
 
18h 13m 46.29s -18° 48' 36.4" P.A. 238.00 sep 13.5 mag 8.62,9.76 Sp B2IV/V
 
 
Coord 2000 18138-1847 Discov num HJ  594 Comp AC Coord arcsec 2000 18 13 46.29 -18 48 36.4
Date first 1857 Date last 2018 Obs 16
Pa first 239 Pa last 238.1 P.A. Now (θ) 238.1°
Sep first 13.3 Sep last 13.506 Sep. Now (ρ) 13.506"
Mag pri 8.62 Mag sec 9.76 delta mag (ΔM) 1.14 Spectral class B2IV/V (blue-white)
Pri motion ra -004 Sec motion ra -001
Pri motion dec +001 Sec motion dec -004
Notes
rPM=1.414
This double is not physical.
 
 
18138-1847 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 166934 18 13 46 -18 48 36 HJ 594 AB 2018 21 121 7.6 8.62 9.42 0.80
Show 18 13 46 -18 48 36 HJ 594 AC 2018 16 238 13.5 8.62 9.76 1.14 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius Tycho2 6272-00706-1 Gaia DR2 4095508881659443200 HD 166934
 
 
WDS 18138-1847 HJ 594 AC : NOTES
 
 
No records found.

 
 
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
18138-1847 HJ 594 AC 2003 12 238 13.8 8.62 9.76 D 181346.29-184836.4
18138-1847 HJ 594 AC 2010 14 241 13.5 8.62 9.76 B2IV/V 181346.29-184836.4
18138-1847 HJ 594 AC 2017 14 238 13.5 8.62 9.76 B2IV/V 181346.29-184836.4
18138-1847 HJ 594 AC 2018 16 239 13.5 8.62 9.76 B2IV/V 181346.29-184836.4

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

 
 
WDS 18138-1847 HJ 594 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18138-1847 HJ 594 AC : MEASURES
 
 
No records found.

 
 
WDS 18138-1847 : VIRTUAL EYEPIECE
 
 

18138-1847 HJ 594A mag 8.62 Sp B2IV/V 18138-1847 HJ 594B sep 7.3 P.A. 122.50 mag 9.42 18138-1847 HJ 594C sep 13.0 P.A. 236.70 mag 9.76 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 18138-1847 : ALADIN DSS IMAGE @ 18h 13m 46.29s -18° 48' 36.4"
 
 
 
 
WDS 18138-1847 HJ 594 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18138-1847 HJ 594AC distance=0' 18137-1845 FEN 28 distance=5' 18147-1847 TOB 272BC distance=14' 18147-1847 TOB 272AB distance=14' 18137-1903 SKF 97 distance=15' 18135-1903 ARA 734 distance=16' 18143-1902 ARA 740 distance=16' 18138-1904 ARA 735 distance=16' 18140-1904 ARA 736 distance=16' 18143-1904 B 2859AB distance=18' 18143-1904 SIN 108AC distance=18' 18125-1847 ARA 460 distance=18' 18125-1852 VAT 2 distance=19' 18150-1857 RST3167 distance=20' 18124-1840 KPP4092 distance=21' 18150-1900 ARA 741 distance=21' 18125-1901 SKF 95 distance=22' 18155-1840 SEE 349 distance=24' 18141-1912 CHR 234Aa,Ab distance=24' 18141-1912 ARA 738AB distance=24' 18153-1900 BU 284BR distance=24' 18153-1900 BU 284AB distance=25' 18153-1900 BU 284AC distance=25' 18153-1900 BU 284AD distance=25' 18153-1900 BU 284AE distance=25' 18153-1900 BU 284AF distance=25' 18153-1900 BU 284AG distance=25' 18153-1900 BU 284AH distance=25' 18153-1900 BU 284AS distance=25' 18153-1900 ARA 743CQ distance=25' 18120-1852 OCC9177 distance=26' 18130-1914 LDS 629 distance=28' 18158-1855 OCC 566 distance=30' 18156-1835 ARA 465 distance=30' 18150-1912 LEO 15AB distance=30' 18150-1912 LEO 15AC distance=30' 18150-1912 OCC9178Aa,Ab distance=30' 18118-1903 I 1479 distance=32' 18133-1817 ARA 462 distance=32' 18130-1819 TDT 739 distance=32' 18126-1917 ARA 732 distance=33' 18147-1922 OCC 466 distance=36' 18118-1825 HJ 2820AB distance=39' 18118-1825 HJ 2820AC distance=39' 18118-1825 HJ 2820BC distance=39' 18164-1858 B 1885 distance=39' 18165-1856 ARA 466 distance=40' 18166-1842 ARA 468 distance=41' 18152-1924 TSN 117 distance=41' 18166-1835 DBR 312 distance=43' 18146-1808 TDT 759 distance=43' 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 18138-1847 HJ 594 AB 121 7.6
Show 18138-1847 HJ 594 AC 238 13.5
Show 18137-1845 FEN 28 256 3.6 5
Show 18147-1847 TOB 272 BC 324 18.4 14
Show 18147-1847 TOB 272 AB 330 28.8 14
Show 18137-1903 SKF 97 269 2.5 15
Show 18135-1903 ARA 734 211 10.8 16
Show 18143-1902 ARA 740 53 9.2 16
Show 18138-1904 ARA 735 93 9.6 16
Show 18140-1904 ARA 736 336 11.6 16
Show 18143-1904 B 2859 AB 48 6.6 18
Show 18143-1904 SIN 108 AC 149 11.3 18
Show 18125-1847 ARA 460 86 13.7 18
Show 18125-1852 VAT 2 86 7.6 19
Show 18150-1857 RST3167 153 4.5 20
Show 18124-1840 KPP4092 335 1.6 21
Show 18150-1900 ARA 741 355 14.7 21
Show 18125-1901 SKF 95 122 5.9 22
Show 18155-1840 SEE 349 134 10.6 24
Show 18141-1912 CHR 234 Aa,Ab 60 0.2 24
Show 18141-1912 ARA 738 AB 61 15.4 24
Show 18153-1900 BU 284 BR 326 5.2 24
Show 18153-1900 BU 284 AB 358 18.1 25
Show 18153-1900 BU 284 AC 86 31.1 25
Show 18153-1900 BU 284 AD 192 57.8 25
Show 18153-1900 BU 284 AE 188 75.3 25
Show 18153-1900 BU 284 AF 267 138.7 25
Show 18153-1900 BU 284 AG 200 12.4 25
Show 18153-1900 BU 284 AH 67 21.0 25
Show 18153-1900 BU 284 AS 103 19.1 25
Show 18153-1900 ARA 743 CQ 298 13.1 25
Show 18120-1852 OCC9177 -1 0.0 26
Show 18130-1914 LDS 629 132 48.2 28
Show 18158-1855 OCC 566 -1 0.1 30
Show 18156-1835 ARA 465 258 15.2 30
Show 18150-1912 LEO 15 AB 112 4.0 30
Show 18150-1912 LEO 15 AC 300 8.1 30
Show 18150-1912 OCC9178 Aa,Ab -1 0.1 30
Show 18118-1903 I 1479 237 2.0 32
Show 18133-1817 ARA 462 343 14.8 32
Show 18130-1819 TDT 739 253 2.2 32
Show 18126-1917 ARA 732 93 9.3 33
Show 18147-1922 OCC 466 -1 0.9 36
Show 18118-1825 HJ 2820 AB 279 5.8 39
Show 18118-1825 HJ 2820 AC 82 12.9 39
Show 18118-1825 HJ 2820 BC 87 18.5 39
Show 18164-1858 B 1885 257 2.5 39
Show 18165-1856 ARA 466 140 7.3 40
Show 18166-1842 ARA 468 131 5.9 41
Show 18152-1924 TSN 117 219 3.5 41
Show 18166-1835 DBR 312 37 4.4 43

 
 
WDS 18138-1847 : COMPONENTS
 
 
  A B
B pa=122.5°
sep=7.35"
 
C pa=236.7°
sep=12.99"
pa=259.4°
sep=17.35"
 
 
18138-1847 A
 
 
Name HD 166934 Coord arcsec 2000 181346.29-184836.4 Mag 8.62 Spectral class B2IV/V (blue-white)
PmRA -4.00 PmDE 1.0 Tycho2 6272-00706-1 HD 166934
Tycho2
Tycho2 6272-00706-1 Pflag RAmdeg 273.44291250 DEmdeg -18.81012323
PmRA -5.7 PmDE 0.5 E RAmdeg 9 E DEmdeg 11
E pmRA 2.1 E pmDE 2.1 EpRAm 1991.50 EpDEm 1991.44
Num 4 Q RAmdeg 1.1 Q DEmdeg 0.3 Q pmRA 1.0
Q pmDE 0.3 BTmag 8.898 E BTmag 0.020 VTmag 8.625
E VTmag 0.018 Prox 77 TYC T HIP
CCDM RAdeg 273.44292611 DEdeg -18.81012444 EpRA 1990 1.76
EpDE 1990 1.81 E RAdeg 9.1 E DEdeg 10.8 Posflg
Corr -0.2
 
 
18138-1847 B
 
 
Coord arcsec 2000 181346.73-184840.3 Mag 9.42 PmRA -9.00 PmDE -3.0
Tycho2 6272-00706-2 Calc delta mag 0.8 Calc coord yes
Tycho2
Tycho2 6272-00706-2 Pflag RAmdeg 273.44485965 DEmdeg -18.81121488
PmRA -4.4 PmDE -0.7 E RAmdeg 18 E DEmdeg 20
E pmRA 2.1 E pmDE 2.1 EpRAm 1990.70 EpDEm 1990.46
Num 4 Q RAmdeg 1.8 Q DEmdeg 1.1 Q pmRA 1.8
Q pmDE 1.1 BTmag 9.654 E BTmag 0.030 VTmag 9.417
E VTmag 0.031 Prox 77 TYC T HIP
CCDM RAdeg 273.44487056 DEdeg -18.81121333 EpRA 1990 1.71
EpDE 1990 1.71 E RAdeg 18.3 E DEdeg 19.9 Posflg
Corr -0.4
 
 
18138-1847 C
 
 
Coord arcsec 2000 181345.53-184843.5 Mag 9.76 PmRA -1.00 PmDE -4.0
Calc delta mag 1.14 Calc coord yes