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Doubles in session


Current system
18118-1825
HJ 2820 AC


Nearby doubles
17' : 18115-1807
ARA 457

18' : 18130-1819
TDT 739

20' : 18124-1840
KPP4092

23' : 18133-1817
ARA 462

23' : 18126-1804
ARA 461

26' : 18125-1847
ARA 460

30' : 18120-1852
OCC9177

31' : 18125-1852
VAT 2

35' : 18094-1822
FEN 26

35' : 18137-1845
FEN 28

37' : 18093-1827
ARA 455

38' : 18140-1801
TDT 754

39' : 18138-1847
HJ 594AB

39' : 18090-1825
HJ 2819

40' : 18118-1903
I 1479

40' : 18125-1901
SKF 95

41' : 18090-1815
ARA 454

42' : 18105-1745
J 2197AB

42' : 18089-1827
ARA 453

43' : 18146-1808
TDT 759

45' : 18086-1823
GAU9002

48' : 18135-1903
ARA 734

49' : 18137-1903
SKF 97

49' : 18147-1847
TOB 272AB

50' : 18155-1840
SEE 349

51' : 18138-1904
ARA 735



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.

18118-1825 HJ 2820 AC

 
 
18h 11m 46.79s -18° 22' 52.3" P.A. 82.00 sep 12.9 mag 10.09,13.05 Sp B0 dist. 512.82 pc (1672.82 l.y.)
 
 
Coord 2000 18118-1825 Discov num HJ 2820 Comp AC Coord arcsec 2000 18 11 46.79 -18 22 52.3
Date first 1830 Date last 2015 Obs 10
Pa first 90 Pa last 81.5 P.A. Now (θ) 81.5°
Sep first 8.0 Sep last 12.943 Sep. Now (ρ) 12.943"
Mag pri 10.09 Mag sec 13.05 delta mag (ΔM) 2.96 Spectral class B0 (blue-white)
Pri motion ra +004 Sec motion ra -001
Pri motion dec -002 Sec motion dec -002
Notes N (See Notes)
rPM=1.118
This double is not physical.
 
 
18118-1825 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 166524 18 11 47 -18 22 52 HJ 2820 AB 2015 12 279 5.8 10.09 11.83 1.74
Show 18 11 47 -18 22 52 HJ 2820 AC 2015 10 82 12.9 10.09 13.05 2.96 <===
Show 18 11 46 -18 22 52 HJ 2820 BC 2015 10 87 18.5 11.83 13.05 1.22
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius HIP 89158 Tycho2 6268-01416-1 Gaia DR2 4095595704395262592
HD 166524 BD BD-18 4826 Distance 512.82 Distance ly 1672.82
 
 
WDS 18118-1825 HJ 2820 AC : NOTES
 
 
discov_num notes refcode
HJ 2820 Aka OL 163.
 
 
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
18118-1825 HJ 2820 AC 1998 8 82 12.8 10.09 13.05 D 181146.79-182252.3
18118-1825 HJ 2820 AC 1999 9 82 12.9 10.09 13.05 D 181146.79-182252.3
18118-1825 HJ 2820 AC 2015 10 82 12.9 10.09 13.05 B0 N 181146.79-182252.3

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

 
 
WDS 18118-1825 HJ 2820 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18118-1825 HJ 2820 AC : MEASURES
 
 
No records found.

 
 
WDS 18118-1825 : VIRTUAL EYEPIECE
 
 

18118-1825 HJ 2820A mag 10.09 Sp B0?Vpe 18118-1825 HJ 2820B sep 5.8 P.A. 278.00 mag 11.83 18118-1825 HJ 2820C sep 12.3 P.A. 81.10 mag 13.05 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 18118-1825 : ALADIN DSS IMAGE @ 18h 11m 46.79s -18° 22' 52.3"
 
 
 
 
WDS 18118-1825 HJ 2820 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18118-1825 HJ 2820AC distance=0' 18118-1825 HJ 2820BC distance=1' 18115-1807 ARA 457 distance=17' 18130-1819 TDT 739 distance=18' 18124-1840 KPP4092 distance=20' 18133-1817 ARA 462 distance=23' 18126-1804 ARA 461 distance=23' 18125-1847 ARA 460 distance=26' 18120-1852 OCC9177 distance=30' 18125-1852 VAT 2 distance=31' 18094-1822 FEN 26 distance=35' 18137-1845 FEN 28 distance=35' 18093-1827 ARA 455 distance=37' 18140-1801 TDT 754 distance=38' 18138-1847 HJ 594AB distance=39' 18138-1847 HJ 594AC distance=39' 18090-1825 HJ 2819 distance=39' 18118-1903 I 1479 distance=40' 18125-1901 SKF 95 distance=40' 18105-1745 J 2197BC distance=41' 18090-1815 ARA 454 distance=41' 18105-1745 J 2197AB distance=42' 18089-1827 ARA 453 distance=42' 18146-1808 TDT 759 distance=43' 18086-1823 GAU9002 distance=45' 18135-1903 ARA 734 distance=48' 18147-1847 TOB 272BC distance=49' 18137-1903 SKF 97 distance=49' 18147-1847 TOB 272AB distance=49' 18155-1840 SEE 349 distance=50' 18138-1904 ARA 735 distance=51' 18140-1904 ARA 736 distance=52' 18087-1756 TDT 706Aa,Ab distance=52' 18087-1756 ARA 266AB distance=52' 18146-1750 ARA 269 distance=53' 18143-1902 ARA 740 distance=54' 18130-1914 LDS 629 distance=55' 18143-1904 B 2859AB distance=55' 18143-1904 SIN 108AC distance=55' 18126-1917 ARA 732 distance=56' 18089-1901 ARA 731 distance=56' 18156-1835 ARA 465 distance=56' 18082-1847 ARA 452 distance=57' 18150-1857 RST3167 distance=57' 18146-1742 SKF 96 distance=58' 18084-1856 AOT 70CD distance=59' 18084-1856 I 625AB distance=59' 18084-1856 AOT 69AB,C distance=59' 18084-1856 AOT 70AB,D distance=59' 18150-1900 ARA 741 distance=59' 18141-1912 CHR 234Aa,Ab distance=60' 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 18118-1825 HJ 2820 AB 279 5.8
Show 18118-1825 HJ 2820 AC 82 12.9
Show 18118-1825 HJ 2820 BC 87 18.5 1
Show 18115-1807 ARA 457 3 14.3 17
Show 18130-1819 TDT 739 253 2.2 18
Show 18124-1840 KPP4092 335 1.6 20
Show 18133-1817 ARA 462 343 14.8 23
Show 18126-1804 ARA 461 313 10.8 23
Show 18125-1847 ARA 460 86 13.7 26
Show 18120-1852 OCC9177 -1 0.0 30
Show 18125-1852 VAT 2 86 7.6 31
Show 18094-1822 FEN 26 46 5.0 35
Show 18137-1845 FEN 28 256 3.6 35
Show 18093-1827 ARA 455 97 11.5 37
Show 18140-1801 TDT 754 91 0.5 38
Show 18138-1847 HJ 594 AB 121 7.6 39
Show 18138-1847 HJ 594 AC 238 13.5 39
Show 18090-1825 HJ 2819 113 23.3 39
Show 18118-1903 I 1479 237 2.0 40
Show 18125-1901 SKF 95 122 5.9 40
Show 18105-1745 J 2197 BC 82 6.2 41
Show 18090-1815 ARA 454 349 14.6 41
Show 18105-1745 J 2197 AB 109 72.6 42
Show 18089-1827 ARA 453 57 8.8 42
Show 18146-1808 TDT 759 250 1.3 43
Show 18086-1823 GAU9002 125 26.8 45
Show 18135-1903 ARA 734 211 10.8 48
Show 18147-1847 TOB 272 BC 324 18.4 49
Show 18137-1903 SKF 97 269 2.5 49
Show 18147-1847 TOB 272 AB 330 28.8 49
Show 18155-1840 SEE 349 134 10.6 50
Show 18138-1904 ARA 735 93 9.6 51
Show 18140-1904 ARA 736 336 11.6 52
Show 18087-1756 TDT 706 Aa,Ab 98 0.8 52
Show 18087-1756 ARA 266 AB 125 11.9 52
Show 18146-1750 ARA 269 68 14.6 53
Show 18143-1902 ARA 740 53 9.2 54
Show 18130-1914 LDS 629 132 48.2 55
Show 18143-1904 B 2859 AB 48 6.6 55
Show 18143-1904 SIN 108 AC 149 11.3 55
Show 18126-1917 ARA 732 93 9.3 56
Show 18089-1901 ARA 731 224 6.3 56
Show 18156-1835 ARA 465 258 15.2 56
Show 18082-1847 ARA 452 263 12.5 57
Show 18150-1857 RST3167 153 4.5 57
Show 18146-1742 SKF 96 50 3.3 58
Show 18084-1856 AOT 70 CD 286 35.5 59
Show 18084-1856 I 625 AB 44 1.8 59
Show 18084-1856 AOT 69 AB,C 92 16.8 59
Show 18084-1856 AOT 70 AB,D 299 19.6 59
Show 18150-1900 ARA 741 355 14.7 59

 
 
WDS 18118-1825 : COMPONENTS
 
 
  A B
B pa=278.0°
sep=5.75"
 
C pa=81.1°
sep=12.30"
pa=86.4°
sep=17.88"
 
 
18118-1825 A
 
 
Name HD 166524 Coord arcsec 2000 181146.79-182252.3 Mag 10.09 Spectral class B0?Vpe (blue-white)
PmRA 4.00 PmDE -2.0 HIP 89158 Tycho2 6268-01416-1
HD 166524 BD BD-18 4826
Tycho2
Tycho2 6268-01416-1 Pflag RAmdeg 272.94495981 DEmdeg -18.38121060
PmRA 6.4 PmDE -2.5 E RAmdeg 19 E DEmdeg 24
E pmRA 2.0 E pmDE 2.1 EpRAm 1987.44 EpDEm 1984.90
Num 4 Q RAmdeg 3.5 Q DEmdeg 2.5 Q pmRA 3.5
Q pmDE 2.6 BTmag 10.334 E BTmag 0.036 VTmag 10.095
E VTmag 0.041 Prox 57 TYC T HIP 89158
CCDM A RAdeg 272.94495111 DEdeg -18.38120389 EpRA 1990 1.73
EpDE 1990 1.71 E RAdeg 20.9 E DEdeg 28.8 Posflg
Corr -0.1
Hipparcos
Catalog H HIP 89158 Proxy H RAhms 18 11 46.79
DEdms -18 22 52.3 Vmag 9.69 VarFlag R Vmag G
RAdeg 272.945 DEdeg -18.3812 AstroRef A Plx -1.43
CCDM 18118-1823 N CCDM I Nsys 1 Ncomp 3
MultFlag C Source Qual C M HIP
Theta Rho HD 166524 BD BD-18 4826
CD CP Dm number -18 4826 VIred 0.52
SpType B0Vpe R SpType Coord arcsec 2000 181146.79-182252.3
Hipparcos 2
HIP 89158 Sn 15 So 3 Nc 3
RArad 4.7637883427 DErad -0.3208124955 Plx 1.95 PmRA -0.76
PmDE -1.83 E RArad 2.8 E DErad 1.4 E Plx 3.11
E pmRA 2.75 E pmDE 1.59 Hpmag 9.8207 E Hpmag 0.0093
SHp 0.077 VA 0 BV 0 E BV 0
VI 0
 
 
18118-1825 B
 
 
Coord arcsec 2000 181146.39-182251.5 Coord calc 181146.39-182251.5 Mag 11.83 PmRA -5.00
PmDE -3.0 Calc delta mag 1.74
 
 
18118-1825 C
 
 
Coord arcsec 2000 181147.64-182250.4 Mag 13.05 PmRA -1.00 PmDE -2.0
Calc delta mag 2.96 Calc coord yes