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Doubles in session


Current system
20157-1849
HJ 2940 AC


Nearby doubles
21' : 20144-1843
ARA 796

33' : 20154-1817
RST3252

55' : 20178-1803
RST3253

56' : 20194-1907
H 5 87

67' : 20186-1942
ARA1204

69' : 20151-1742
RST3251

71' : 20172-1742
FEN 37

73' : 20187-1751
UC 4142

73' : 20134-1953
ARA1203

73' : 20204-1919
WSP 68AB

74' : 20194-1942
ARA1206

75' : 20191-1947
BHA 38

82' : 20210-1819
OCC 824

83' : 20104-1923
HDS2873

84' : 20209-1809
OCC 825

89' : 20220-1854
DON1119

90' : 20209-1939
BU 662AB

90' : 20219-1909
ARA 797

95' : 20224-1841
B 479

98' : 20093-1925
HU 80

101' : 20154-2030
SEE 411

102' : 20102-1954
UC 4110

102' : 20091-1928
TDT2026

102' : 20201-1730
UC 4149AB

109' : 20234-1902
ARA 799

114' : 20110-1717
KPP 460



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.

20157-1849 HJ 2940 AC

 
 
20h 15m 42.64s -18° 49' 00.7" P.A. 76.00 sep 20.6 mag 11.42,11.70 Sp F4V
 
 
Coord 2000 20157-1849 Discov num HJ 2940 Comp AC Coord arcsec 2000 20 15 42.64 -18 49 00.7
Date first 1830 Date last 2017 Obs 11
Pa first 86 Pa last 76.3 P.A. Now (θ) 76.3°
Sep first 25.0 Sep last 20.578 Sep. Now (ρ) 20.578"
Mag pri 11.42 Mag sec 11.70 delta mag (ΔM) 0.28 Spectral class F4V (yellow-white)
Pri motion ra +002 Sec motion ra -001
Pri motion dec -027 Sec motion dec -007
Notes U (Proper motion indicates non-physical)
rPM=0.747
This double is not physical.
 
 
20157-1849 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 15 43 -18 49 01 HJ 2940 AB 2015 6 101 35.3 11.42 12.80 1.38
Show 20 15 43 -18 49 01 HJ 2940 AC 2017 11 76 20.6 11.42 11.70 0.28 <===
Show 20 15 43 -18 49 01 ABH 134 AD 2015 4 103 70.6 11.42 14.58 3.16
Show 20 15 43 -18 49 01 ABH 134 AE 2015 5 252 84.5 11.42 12.86 1.44
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Capricornus Tycho2 6323-00425-1 Gaia DR2 6872552512374322432
 
 
WDS 20157-1849 HJ 2940 AC : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
AbH1961 - Abt, H.A. 1961A&AS....6...37A
AbH1961 A&AS 6, 37, 1961
AbH1962 Po j Abt, H.A. Jeffers, H., Gibson, & Sandage, A. 1962ApJ...135..429A
AbH1962 ApJ 135, 429, 1962
AbH1964 - AbT, H.A. et al. 1964ApJ...139.1139A
AbH1964 ApJ 139, 1139, 1964
AbH1965 - Abt, H.A. 1965A&AS...11..429A
AbH1965 A&AS 11, 429, 1965
AbH1965b - Abt, H.A. et al. 1965ApJ...142.1604A
AbH1965b ApJ 142, 1604, 1965
AbH1972 - Abt. H.A. & Biggs, E.S. 1972bsrv.book.....A
AbH1972 Bibliography of Stellar Radial Velocities
AbH1972b not - Abt. H.A., Levy, S.G., & Gandet, T.L. 1972AJ.....77..138A
AbH1972b AJ 77, 138, 1972
AbH1973 - Abt, H.A. & Levy, S.G. 1973AJ.....78.1093A
AbH1973 AJ 78, 1093, 1973
AbH1976 orb - Abt, H.A. & Levy, S.G. 1976A&AS...30..273A
AbH1976 A&AS 30, 273, 1976
AbH1978 - Abt, H.A. & Levy, S.G. 1978A&AS...36..241A
AbH1978 A&AS 36, 241, 1978
AbH1985 - Abt, H.A. & Levy, S.G. 1985ApJS...59..229A
AbH1985 ApJS 59, 229, 1985
AbH1986 - Abt, H.A. 1986ApJ...304..688A
AbH1986 ApJ 304, 688, 1986
AbH2000 C u Abt, H.A. & Corbally, C.J. 2000ApJ...541..841A
AbH2000 ApJ 541, 841, 2000
AbH2000 (Multi-epoch astrometry, photometry, and spectroscopy to determine
AbH2000 optical/physical nature of members of possible Trapezium systems)
AbH2006 orb - Abt, H.A., & Willmarth, D. 2006ApJS..162..207A
AbH2006 ApJS 162, 207, 2006
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
20157-1849 HJ 2940 AC 1998 6 77 20.7 11.42 11.51 F4V D 201542.64-184900.7
20157-1849 HJ 2940 AC 1999 7 77 20.7 11.42 11.51 F4V UD 201542.64-184900.7
20157-1849 HJ 2940 AC 2016 9 77 20.8 11.42 11.70 F4V U 201542.64-184900.7
20157-1849 HJ 2940 AC 2017 10 77 20.6 11.42 11.70 F4V U 201542.64-184900.7

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

 
 
WDS 20157-1849 HJ 2940 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20157-1849 HJ 2940 AC : MEASURES
 
 
No records found.

 
 
WDS 20157-1849 : VIRTUAL EYEPIECE
 
 

20157-1849 HJ 2940A mag 11.42 Sp F4V 20157-1849 HJ 2940B sep 33.5 P.A. 101.80 mag 12.8 20157-1849 HJ 2940C sep 19.5 P.A. 75.60 mag 11.7 20157-1849 ABH 134D sep 67.0 P.A. 104.10 mag 14.58 20157-1849 ABH 134E sep 80.5 P.A. 250.50 mag 12.86 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 20157-1849 : ALADIN DSS IMAGE @ 20h 15m 42.64s -18° 49' 00.7"
 
 
 
 
WDS 20157-1849 HJ 2940 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20157-1849 HJ 2940AC distance=0' 20144-1843 ARA 796 distance=21' 20154-1817 RST3252 distance=33' 20178-1803 RST3253 distance=55' 20194-1907 H 5 87 distance=56' 20186-1942 ARA1204 distance=67' 20151-1742 RST3251 distance=69' 20172-1742 FEN 37 distance=71' 20187-1751 UC 4142 distance=73' 20134-1953 ARA1203 distance=73' 20204-1919 WSP 68AB distance=73' 20204-1919 WSP 68AC distance=73' 20204-1919 WSP 68AD distance=73' 20204-1919 WSP 68AE distance=73' 20194-1942 ARA1206 distance=74' 20191-1947 BHA 38 distance=75' 20210-1819 OCC 824 distance=82' 20104-1923 HDS2873 distance=83' 20209-1809 OCC 825 distance=84' 20209-1939 BU 662BC distance=89' 20220-1854 DON1119 distance=89' 20209-1939 BU 662AB distance=90' 20219-1909 ARA 797 distance=90' 20224-1841 B 479 distance=95' 20093-1925 HU 80 distance=98' 20154-2030 SEE 411 distance=101' 20102-1954 UC 4110 distance=102' 20091-1928 TDT2026 distance=102' 20201-1730 UC 4149AB distance=102' 20201-1730 KPP4395AC distance=102' 20234-1902 ARA 799 distance=109' 20110-1717 KPP 460 distance=114' 20082-1934 BHA 36 distance=116' 20164-1652 OCC 864 distance=118' 20152-1651 OCC 993 distance=119' 20080-1939 KPP1032 distance=121' 20209-2027 ARA1207 distance=123' 20071-1905 RST3248 distance=124' 20070-1848 HJ 2928 distance=125' 20097-2022 SEE 409 distance=126' 20103-2030 BEU 21 distance=127' 20224-2014 ARG 38BC distance=127' 20221-1721 LDS6340 distance=127' 20224-2014 ARG 38AB distance=127' 20224-2014 ARG 38AC distance=127' 20143-1636 HJ 2939 distance=135' 20229-2019 TDT2224 distance=136' 20242-1956 ARA1208 distance=138' 20248-1943 HDS2919 distance=140' 20108-1646 TDT2053 distance=142' 20147-2111 DON 982 distance=143' 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 20157-1849 HJ 2940 AB 101 35.3
Show 20157-1849 HJ 2940 AC 76 20.6
Show 20157-1849 ABH 134 AD 103 70.6
Show 20157-1849 ABH 134 AE 252 84.5
Show 20144-1843 ARA 796 80 12.3 21
Show 20154-1817 RST3252 261 0.6 33
Show 20178-1803 RST3253 115 2.5 55
Show 20194-1907 H 5 87 180 56.0 56
Show 20186-1942 ARA1204 298 12.8 67
Show 20151-1742 RST3251 263 2.9 69
Show 20172-1742 FEN 37 64 4.7 71
Show 20187-1751 UC 4142 195 40.8 73
Show 20134-1953 ARA1203 238 10.1 73
Show 20204-1919 WSP 68 AB 120 13.1 73
Show 20204-1919 WSP 68 AC 189 21.3 73
Show 20204-1919 WSP 68 AD 310 21.4 73
Show 20204-1919 WSP 68 AE 49 23.1 73
Show 20194-1942 ARA1206 10 11.6 74
Show 20191-1947 BHA 38 102 3.2 75
Show 20210-1819 OCC 824 -1 0.1 82
Show 20104-1923 HDS2873 226 0.1 83
Show 20209-1809 OCC 825 -1 0.1 84
Show 20209-1939 BU 662 BC 297 2.2 89
Show 20220-1854 DON1119 198 5.1 89
Show 20209-1939 BU 662 AB 4 125.2 90
Show 20219-1909 ARA 797 46 5.1 90
Show 20224-1841 B 479 117 2.3 95
Show 20093-1925 HU 80 6 2.5 98
Show 20154-2030 SEE 411 2 2.5 101
Show 20102-1954 UC 4110 269 39.9 102
Show 20091-1928 TDT2026 198 1.7 102
Show 20201-1730 UC 4149 AB 105 51.9 102
Show 20201-1730 KPP4395 AC 76 5.1 102
Show 20234-1902 ARA 799 304 6.6 109
Show 20110-1717 KPP 460 68 3.9 114
Show 20082-1934 BHA 36 343 3.2 116
Show 20164-1652 OCC 864 -1 0.1 118
Show 20152-1651 OCC 993 -1 0.1 119
Show 20080-1939 KPP1032 302 8.3 121
Show 20209-2027 ARA1207 237 9.4 123
Show 20071-1905 RST3248 122 0.7 124
Show 20070-1848 HJ 2928 311 13.5 125
Show 20097-2022 SEE 409 31 5.1 126
Show 20103-2030 BEU 21 43 0.2 127
Show 20224-2014 ARG 38 BC 199 38.0 127
Show 20221-1721 LDS6340 356 7.2 127
Show 20224-2014 ARG 38 AB 295 17.7 127
Show 20224-2014 ARG 38 AC 225 40.2 127
Show 20143-1636 HJ 2939 126 17.3 135
Show 20229-2019 TDT2224 272 0.4 136
Show 20242-1956 ARA1208 307 12.9 138

 
 
WDS 20157-1849 : COMPONENTS
 
 
  A B C D
B pa=101.8°
sep=33.51"
 
C pa=75.6°
sep=19.54"
pa=310.2°
sep=18.17"
 
D pa=104.1°
sep=67.01"
pa=106.4°
sep=33.55"
pa=114.7°
sep=50.72"
 
E pa=250.5°
sep=80.45"
pa=259.6°
sep=110.47"
pa=251.5°
sep=99.93"
pa=265.8°
sep=141.22"
 
 
20157-1849 A
 
 
Coord arcsec 2000 201542.64-184900.7 Mag 11.42 Spectral class F4V (yellow-white) PmRA 2.00
PmDE -27.0 Tycho2 6323-00307-1
Tycho2
Tycho2 6323-00307-1 Pflag RAmdeg 303.93358109 DEmdeg -18.81553456
PmRA 1.7 PmDE -11.5 E RAmdeg 128 E DEmdeg 144
E pmRA 3.8 E pmDE 4.2 EpRAm 1969.48 EpDEm 1965.94
Num 3 Q RAmdeg 2.3 Q DEmdeg 0.2 Q pmRA 2.3
Q pmDE 0.2 BTmag 13.249 E BTmag 0.434 VTmag 11.512
E VTmag 0.145 Prox 207 TYC HIP
CCDM RAdeg 303.93357583 DEdeg -18.81550722 EpRA 1990 1.66
EpDE 1990 1.45 E RAdeg 152.8 E DEdeg 179.3 Posflg
Corr -0.3
CCDM
Ccdm 20157-1849 RComp Comp A Note1
Note2 Discov num DRAs 2.03 DDEs 4.1
R dRAs 66 Year Theta Rho
Obs 3 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number -19 5757 Cat1 BD
Name2 Cat2 HD M HD
ADS BDS B10020 M ADS BDS N IDS IDS 20099S1907A
HIC
 
 
20157-1849 B
 
 
Coord arcsec 2000 201544.95-184907.6 Mag 12.8 PmRA 14.00 PmDE -6.0
Calc delta mag 1.38 Calc coord yes
CCDM
Ccdm 20157-1849 RComp Comp B Note1
Note2 Discov num HJ 2940 DRAs 3.02 DDEs -7.7
R dRAs 66 Year 1830 Theta 141 Rho 12.0
Obs 1 Vmag 12.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS B10020 M ADS BDS N IDS IDS 20099S1907B
HIC
 
 
20157-1849 C
 
 
Coord arcsec 2000 201543.97-184855.8 Mag 11.7 PmRA -1.00 PmDE -7.0
Calc delta mag 0.28 Calc coord yes
CCDM
Ccdm 20157-1849 RComp Comp C Note1
Note2 Discov num HJ 2940 DRAs 0.60 DDEs 0.1
R dRAs 66 Year 1830 Theta 257 Rho 25.0
Obs 1 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS B10020 M ADS BDS N IDS IDS 20099S1907C
HIC
 
 
20157-1849 D
 
 
Coord arcsec 2000 201547.22-184917.1 Mag 14.58 PmRA -2.00 PmDE -4.0
Calc delta mag 3.16 Calc coord yes
 
 
20157-1849 E
 
 
Coord arcsec 2000 201537.30-184927.5 Mag 12.86 PmRA -3.00 PmDE -4.0
Calc delta mag 1.44 Calc coord yes