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Current system
20453-2024
HJ 2992
HD 197581


Nearby doubles
12' : 20460-2031
OCC9195

23' : 20438-2031
HJ 2990

31' : 20448-2054
BU 674AB

33' : 20439-1958
BRT1565

39' : 20432-2049
CHR 222AB

53' : 20489-2037
HJ 2998AB

54' : 20430-1942
ARA1214

56' : 20415-2012
ARA1213

62' : 20434-1929
HLD 40AB

65' : 20498-2036
ARA1218

68' : 20462-2131
OCC9196

69' : 20421-2117
B 1894

70' : 20493-1945
ALP 25

72' : 20422-2122
ARA1584

73' : 20431-1919
AOT 94

75' : 20458-2139
OCC 55

77' : 20416-1928
RST3266

79' : 20399-2008
I 1426

80' : 20465-2141
B 500

82' : 20435-1907
HU 270AB

82' : 20462-2145
HDS2957

85' : 20455-2148
UC 4281

86' : 20512-2010
BHA 41

87' : 20474-2145
OCC 56

87' : 20400-1940
AOT 92

88' : 20452-1857
ARA 803



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.

20453-2024 HJ 2992 (HD 197581)

 
 
20h 45m 17.57s -20° 24' 11.0" P.A. 144.00 sep 2.9 mag 10.07,10.60 Sp G6V
 
 
Coord 2000 20453-2024 Discov num HJ 2992 Comp Coord arcsec 2000 20 45 17.57 -20 24 11.0
Date first 1830 Date last 2016 Obs 18
Pa first 141 Pa last 144 P.A. Now (θ) 144°
Sep first 1.5 Sep last 2.917 Sep. Now (ρ) 2.917"
Mag pri 10.07 Mag sec 10.60 delta mag (ΔM) 0.53 Spectral class G6V (yellow)
Pri motion ra +026 Sec motion ra +022
Pri motion dec -060 Sec motion dec -061
Notes T (Parallax indicates physical)
rPM=0.063 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 197581 Constellation Capricornus Tycho2 6339-01120-1 Gaia DR2 6857141688677395840
HD 197581
 
 
WDS 20453-2024 HJ 2992 (HD 197581) : 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
20453-2024 HJ 2992 2000 13 151 2.3 10.07 10.60 G6V D 204517.57-202411.0
20453-2024 HJ 2992 2013 15 145 2.8 10.07 10.60 G6V 204517.57-202411.0
20453-2024 HJ 2992 2015 16 144 2.9 10.07 10.60 G6V 204517.57-202411.0
20453-2024 HJ 2992 2016 18 144 2.9 10.07 10.60 G6V T 204517.57-202411.0

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

 
 
WDS 20453-2024 HJ 2992 (HD 197581) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20453-2024 HJ 2992 (HD 197581) : MEASURES
 
 
No records found.

 
 
WDS 20453-2024 (HD 197581) : VIRTUAL EYEPIECE
 
 

20453-2024 HJ 2992A mag 10.07 Sp G6V 20453-2024 HJ 2992B sep 2.9 P.A. 145.70 mag 10.6 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 20453-2024 (HD 197581) : ALADIN DSS IMAGE @ 20h 45m 17.57s -20° 24' 11.0"
 
 
 
 
WDS 20453-2024 HJ 2992 (HD 197581) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20453-2024 HJ 2992 distance=0' 20460-2031 OCC9195 distance=12' 20438-2031 HJ 2990 distance=23' 20448-2054 BU 674AB distance=31' 20439-1958 BRT1565 distance=33' 20432-2049 CHR 222AB distance=39' 20432-2049 CVR 8AB,C distance=39' 20489-2037 HJ 2998AB distance=53' 20489-2037 BU 1494AC distance=53' 20430-1942 ARA1214 distance=54' 20415-2012 ARA1213 distance=56' 20434-1929 HLD 40AB distance=62' 20434-1929 HLD 40AC distance=62' 20434-1929 HLD 40AD distance=62' 20434-1929 HLD 40CD distance=62' 20498-2036 ARA1218 distance=65' 20462-2131 OCC9196 distance=68' 20421-2117 B 1894 distance=69' 20493-1945 ALP 25 distance=70' 20422-2122 ARA1584 distance=72' 20431-1919 AOT 94 distance=73' 20458-2139 OCC 55 distance=75' 20416-1928 RST3266 distance=77' 20399-2008 I 1426 distance=79' 20465-2141 B 500 distance=80' 20435-1907 HU 270AB distance=82' 20435-1907 B 2890AC distance=82' 20435-1907 AOT 95AD distance=82' 20462-2145 HDS2957 distance=82' 20455-2148 UC 4281 distance=85' 20512-2010 BHA 41 distance=86' 20474-2145 OCC 56 distance=87' 20400-1940 AOT 92 distance=87' 20452-1857 ARA 803 distance=88' 20429-1856 WOR 41 distance=95' 20429-1857 KUI 100AB distance=96' 20429-1857 KUI 100AC distance=96' 20429-1857 KUI 100AD distance=96' 20399-1918 AOT 91 distance=102' 20517-2112 UC 4310 distance=103' 20384-2100 RST9008 distance=103' 20408-1901 BAR 55 distance=105' 20485-2205 DON 994 distance=110' 20531-2013 ARA1220 distance=111' 20474-1837 HJ 2995 distance=111' 20434-2218 HJ 2989 distance=118' 20487-2216 UC 4296 distance=122' 20509-1851 GWP3005 distance=123' 20522-1904 I 667 distance=126' 20446-2230 TDT2512 distance=127' 20392-1850 LDS6415 distance=127' 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 20453-2024 HJ 2992 144 2.9
Show 20460-2031 OCC9195 -1 0.0 12
Show 20438-2031 HJ 2990 308 19.6 23
Show 20448-2054 BU 674 AB 99 2.0 31
Show 20439-1958 BRT1565 221 4.1 33
Show 20432-2049 CHR 222 AB 123 0.2 39
Show 20432-2049 CVR 8 AB,C 307 13.6 39
Show 20489-2037 HJ 2998 AB 140 6.0 53
Show 20489-2037 BU 1494 AC 135 92.5 53
Show 20430-1942 ARA1214 38 3.7 54
Show 20415-2012 ARA1213 245 1.3 56
Show 20434-1929 HLD 40 AB 356 5.2 62
Show 20434-1929 HLD 40 AC 258 144.2 62
Show 20434-1929 HLD 40 AD 255 145.6 62
Show 20434-1929 HLD 40 CD 188 4.5 62
Show 20498-2036 ARA1218 307 1.4 65
Show 20462-2131 OCC9196 -1 0.0 68
Show 20421-2117 B 1894 207 0.4 69
Show 20493-1945 ALP 25 163 21.1 70
Show 20422-2122 ARA1584 1 11.7 72
Show 20431-1919 AOT 94 140 10.9 73
Show 20458-2139 OCC 55 -1 0.1 75
Show 20416-1928 RST3266 261 2.4 77
Show 20399-2008 I 1426 225 1.6 79
Show 20465-2141 B 500 124 1.5 80
Show 20435-1907 HU 270 AB 85 1.8 82
Show 20435-1907 B 2890 AC 32 4.8 82
Show 20435-1907 AOT 95 AD 127 38.7 82
Show 20462-2145 HDS2957 236 0.4 82
Show 20455-2148 UC 4281 280 7.8 85
Show 20512-2010 BHA 41 64 4.5 86
Show 20474-2145 OCC 56 -1 0.1 87
Show 20400-1940 AOT 92 277 17.5 87
Show 20452-1857 ARA 803 123 12.1 88
Show 20429-1856 WOR 41 261 3.1 95
Show 20429-1857 KUI 100 AB 323 81.4 96
Show 20429-1857 KUI 100 AC 318 74.6 96
Show 20429-1857 KUI 100 AD 305 70.3 96
Show 20399-1918 AOT 91 192 17.9 102
Show 20517-2112 UC 4310 318 18.7 103
Show 20384-2100 RST9008 102 0.1 103
Show 20408-1901 BAR 55 273 4.1 105
Show 20485-2205 DON 994 85 0.6 110
Show 20531-2013 ARA1220 187 6.7 111
Show 20474-1837 HJ 2995 283 29.0 111
Show 20434-2218 HJ 2989 153 29.5 118
Show 20487-2216 UC 4296 251 33.2 122
Show 20509-1851 GWP3005 351 7.4 123
Show 20522-1904 I 667 342 2.7 126
Show 20446-2230 TDT2512 57 2.1 127
Show 20392-1850 LDS6415 350 1.5 127

 
 
WDS 20453-2024 : COMPONENTS
 
 
  A
B pa=145.7°
sep=2.86"
 
 
20453-2024 A
 
 
Componente originario normalizzato AB Name HD 197581 Coord arcsec 2000 204517.57-202411.0 Mag 10.07
Spectral class G6V (yellow) PmRA 26.00 PmDE -60.0 Tycho2 6339-01120-1
HD 197581
Tycho2
Tycho2 6339-01120-1 Pflag RAmdeg 311.32319338 DEmdeg -20.40306222
PmRA 23.3 PmDE -54.7 E RAmdeg 23 E DEmdeg 30
E pmRA 3.8 E pmDE 4.0 EpRAm 1991.26 EpDEm 1990.60
Num 2 Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 10.867 E BTmag 0.049 VTmag 10.075
E VTmag 0.036 Prox 29 TYC T HIP
CCDM RAdeg 311.32313639 DEdeg -20.40293167 EpRA 1990 1.77
EpDE 1990 1.40 E RAdeg 22.9 E DEdeg 29.7 Posflg
Corr -0.1
 
 
20453-2024 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204517.68-202413.4 Mag 10.6 PmRA 22.00
PmDE -61.0 Tycho2 6339-01120-2 Calc delta mag 0.53 Calc coord yes
Tycho2
Tycho2 6339-01120-2 Pflag RAmdeg 311.32374738 DEmdeg -20.40371415
PmRA 28.4 PmDE -59.1 E RAmdeg 36 E DEmdeg 46
E pmRA 4.1 E pmDE 4.3 EpRAm 1990.66 EpDEm 1989.67
Num 2 Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 11.698 E BTmag 0.082 VTmag 10.603
E VTmag 0.051 Prox 29 TYC T HIP
CCDM RAdeg 311.32367833 DEdeg -20.40357306 EpRA 1990 1.78
EpDE 1990 1.40 E RAdeg 36.4 E DEdeg 46.8 Posflg D
Corr -0.1