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Current system
20257-2341
HJ 2957 AB


Nearby doubles
43' : 20253-2259
TSN 193

43' : 20279-2310
ARA2272

46' : 20287-2359
RSS 549

48' : 20285-2410
CHR 98

60' : 20271-2438
B 483

69' : 20299-2418
UC 4201

70' : 20270-2234
OCC1133

72' : 20250-2452
UC 4172

73' : 20212-2420
RST3258

73' : 20304-2415
NSN 496

77' : 20292-2240
RST3261

79' : 20238-2227
ARA1925

81' : 20242-2459
SEE 418

86' : 20252-2506
UC 4174

87' : 20252-2215
ARA1928

91' : 20196-2415
UC 4146

93' : 20289-2220
DON 987

96' : 20207-2447
RST3257

98' : 20186-2342
OCC 694

98' : 20297-2220
OCC 675

102' : 20292-2510
HJ 2964

105' : 20244-2158
BRT1564

107' : 20253-2154
ARA1929

109' : 20191-2242
ARA2271

111' : 20177-2352
KPP2147

113' : 20245-2150
ARA1927



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.

20257-2341 HJ 2957 AB

 
 
20h 25m 42.87s -23° 40' 45.8" P.A. 276.00 sep 15.0 mag 11.37,11.73
 
 
Coord 2000 20257-2341 Discov num HJ 2957 Comp AB Coord arcsec 2000 20 25 42.87 -23 40 45.8
Date first 1919 Date last 2020 Obs 7
Pa first 267 Pa last 275.5 P.A. Now (θ) 275.5°
Sep first 15.9 Sep last 14.98 Sep. Now (ρ) 14.98"
Mag pri 11.37 Mag sec 11.73 delta mag (ΔM) 0.36 Spectral class
Pri motion ra -023 Sec motion ra -011
Pri motion dec -044 Sec motion dec -017
Notes
rPM=0.595
Nature of this double is uncertain.
 
 
20257-2341 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 25 43 -23 40 46 HJ 2957 AB 2020 7 276 15.0 11.37 11.73 0.36 <===
Show 20 25 43 -23 40 46 DAW 227 AC 2020 4 56 19.7 11.37 13.10 1.73
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Capricornus Tycho2 6907-00688-1 Gaia DR2 6849538531413344384
 
 
WDS 20257-2341 HJ 2957 AB : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Daw1918a Ma - Dawson, B.H. .
Daw1918a Pub. La Plata Obs. 4, Pt.1, 1918
Daw1918b Ma - Dawson, B.H. (measure by Chaves, A.J.) .
Daw1918b Pub. La Plata Obs. 4, Pt.1, 1918
Daw1919 orb - Dawson, B.H. 1919AJ.....32..109D
Daw1919 AJ 32, 109, 1919
Daw1920 orb - Dawson, B.H. 1920AJ.....32..141D
Daw1920 AJ 32, 141, 1920
Daw1920b orb - Dawson, B.H. 1920AJ.....32..161D
Daw1920b AJ 32, 161, 1920
Daw1922 Ma - Dawson, B.H. .
Daw1922 Pub. La Plata Obs. 4, Pt.2, 1922
Daw1922b orb - Dawson, B.H. 1922AJ.....34...17D
Daw1922b AJ 34, 17, 1922
Daw1924a Ma - Dawson, B.H. 1924AJ.....35..147D
Daw1924a AJ 35, 147, 1924 (DAW 112 - 158; data also in Daw1937)
Daw1924b orb - Dawson, B.H. 1924AJ.....36...23D
Daw1924b AJ 36, 23, 1924
Daw1926 orb - Dawson, B.H. 1926AJ.....36..181D
Daw1926 AJ 36, 181, 1926
Daw1927A Ma - Dawson, B.H. 1927sdsc.book......
Daw1927A cited in SDS (Southern Double Star Cat.), 1927
Daw1933 orb - Dawson, B.H. 1933AJ.....43...15D
Daw1933 AJ 43, 15, 1933
Daw1937 Ma - Dawson, B.H. .
Daw1937 Pub. La Plata Obs. 6, 85, 1937
Daw9999 Ma - Dawson, B.H. ...................
Daw9999 Unpublished, manuscript or reference not found.
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
20257-2341 HJ 2957 AB 1998 4 273 15.1 11.37 11.73 D 202542.87-234045.8
20257-2341 HJ 2957 AB 1999 5 274 15.1 11.37 11.73 D 202542.87-234045.8
20257-2341 HJ 2957 AB 2015 6 275 15.0 11.37 11.73 202542.87-234045.8
20257-2341 HJ 2957 AB 2020 7 276 15.0 11.37 11.73 202542.87-234045.8

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

 
 
WDS 20257-2341 HJ 2957 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20257-2341 HJ 2957 AB : MEASURES
 
 
No records found.

 
 
WDS 20257-2341 : VIRTUAL EYEPIECE
 
 

20257-2341 HJ 2957A mag 11.37 20257-2341 HJ 2957B sep 13.7 P.A. 276.00 mag 11.73 20257-2341 DAW 227C sep 18.6 P.A. 53.60 mag 13.1 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20257-2341 : ALADIN DSS IMAGE @ 20h 25m 42.87s -23° 40' 45.8"
 
 
 
 
WDS 20257-2341 HJ 2957 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20257-2341 HJ 2957AB distance=0' 20253-2259 TSN 193 distance=43' 20279-2310 ARA2272 distance=43' 20287-2359 RSS 549 distance=46' 20285-2410 CHR 98 distance=48' 20271-2438 B 483 distance=60' 20299-2418 UC 4201 distance=69' 20270-2234 OCC1133 distance=70' 20250-2452 UC 4172 distance=72' 20212-2420 RST3258 distance=73' 20304-2415 NSN 496 distance=73' 20292-2240 RST3261 distance=77' 20238-2227 ARA1925 distance=79' 20242-2459 SEE 418 distance=81' 20252-2506 UC 4174 distance=86' 20252-2215 ARA1928 distance=87' 20196-2415 UC 4146 distance=91' 20289-2220 DON 987 distance=93' 20207-2447 RST3257 distance=96' 20186-2342 OCC 694 distance=98' 20297-2220 OCC 675 distance=98' 20292-2510 HJ 2964 distance=102' 20244-2158 BRT1564 distance=105' 20253-2154 ARA1929 distance=107' 20191-2242 ARA2271 distance=109' 20177-2352 KPP2147 distance=111' 20245-2150 ARA1927 distance=113' 20219-2153 LDS 709 distance=122' 20217-2149 ARA1924 distance=126' 20322-2209 HJ 2973AB distance=129' 20322-2209 OCC 674Ba,Bb distance=129' 20327-2213 UC 4210 distance=131' 20232-2135 ARA1580 distance=131' 20207-2150 ARA1923 distance=132' 20353-2358 BRT3092 distance=133' 20323-2519 UC 4208 distance=133' 20253-2128 ARA1581 distance=134' 20171-2119 SEE 412 distance=137' 20335-2214 HJ 2975 distance=139' 20299-2547 HDS2930 distance=139' 20156-2412 HLD 157 distance=143' 20346-2219 LDS4850 distance=147' 20197-2138 BRT1562 distance=149' 20172-2516 HJ 2942 distance=151' 20163-2225 KPP2112 distance=151' 20246-2111 B 1893 distance=151' 20325-2142 SEE 420 distance=153' 20358-2501 DON 989 distance=161' 20337-2541 H N 7AB distance=162' 20337-2541 H N 7AC distance=162' 20337-2541 H N 7AD distance=162' 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 20257-2341 HJ 2957 AB 276 15.0
Show 20257-2341 DAW 227 AC 56 19.7
Show 20253-2259 TSN 193 269 0.9 43
Show 20279-2310 ARA2272 157 5.8 43
Show 20287-2359 RSS 549 29 11.4 46
Show 20285-2410 CHR 98 112 0.2 48
Show 20271-2438 B 483 57 4.4 60
Show 20299-2418 UC 4201 239 33.1 69
Show 20270-2234 OCC1133 -1 0.2 70
Show 20250-2452 UC 4172 304 15.6 72
Show 20212-2420 RST3258 134 1.1 73
Show 20304-2415 NSN 496 237 11.3 73
Show 20292-2240 RST3261 24 2.0 77
Show 20238-2227 ARA1925 131 6.0 79
Show 20242-2459 SEE 418 54 2.7 81
Show 20252-2506 UC 4174 145 39.1 86
Show 20252-2215 ARA1928 109 6.5 87
Show 20196-2415 UC 4146 155 22.8 91
Show 20289-2220 DON 987 77 5.7 93
Show 20207-2447 RST3257 66 2.8 96
Show 20186-2342 OCC 694 -1 0.1 98
Show 20297-2220 OCC 675 -1 0.1 98
Show 20292-2510 HJ 2964 42 36.0 102
Show 20244-2158 BRT1564 113 2.7 105
Show 20253-2154 ARA1929 303 7.7 107
Show 20191-2242 ARA2271 345 12.6 109
Show 20177-2352 KPP2147 316 17.6 111
Show 20245-2150 ARA1927 196 8.4 113
Show 20219-2153 LDS 709 169 41.0 122
Show 20217-2149 ARA1924 185 14.3 126
Show 20322-2209 HJ 2973 AB 129 39.4 129
Show 20322-2209 OCC 674 Ba,Bb -1 0.1 129
Show 20327-2213 UC 4210 172 46.3 131
Show 20232-2135 ARA1580 202 6.6 131
Show 20207-2150 ARA1923 8.7 132
Show 20353-2358 BRT3092 150 5.9 133
Show 20323-2519 UC 4208 79 23.7 133
Show 20253-2128 ARA1581 142 14.9 134
Show 20171-2119 SEE 412 230 25.7 137
Show 20335-2214 HJ 2975 21 10.3 139
Show 20299-2547 HDS2930 11.4 139
Show 20156-2412 HLD 157 239 2.2 143
Show 20346-2219 LDS4850 18 89.2 147
Show 20197-2138 BRT1562 183 3.2 149
Show 20172-2516 HJ 2942 223 11.6 151
Show 20163-2225 KPP2112 354 17.1 151
Show 20246-2111 B 1893 58 2.3 151
Show 20325-2142 SEE 420 84 1.6 153
Show 20358-2501 DON 989 103 1.1 161
Show 20337-2541 H N 7 AB 160 14.6 162
Show 20337-2541 H N 7 AC 336 15.7 162

 
 
WDS 20257-2341 : COMPONENTS
 
 
  A B
B pa=276.0°
sep=13.73"
 
C pa=53.6°
sep=18.56"
pa=71.5°
sep=30.16"
 
 
20257-2341 A
 
 
Coord arcsec 2000 202542.87-234045.8 Mag 11.37 PmRA -23.00 PmDE -44.0
Tycho2 6907-00688-1
Tycho2
Tycho2 6907-00688-1 Pflag RAmdeg 306.42863815 DEmdeg -23.67939480
PmRA -21.6 PmDE -45.4 E RAmdeg 65 E DEmdeg 78
E pmRA 2.5 E pmDE 2.4 EpRAm 1982.01 EpDEm 1974.94
Num 4 Q RAmdeg 0.8 Q DEmdeg 0.7 Q pmRA 0.8
Q pmDE 0.7 BTmag 12.111 E BTmag 0.162 VTmag 11.366
E VTmag 0.117 Prox 147 TYC HIP
CCDM RAdeg 306.42869250 DEdeg -23.67928778 EpRA 1990 1.68
EpDE 1990 1.44 E RAdeg 68.7 E DEdeg 87.7 Posflg
Corr -0.2
CCDM
Ccdm 20257-2341 RComp Comp A Note1
Note2 Discov num DRAs 0.85 DDEs 15.3
R dRAs 66 Year Theta Rho
Obs 3 Vmag 10.5 Sp PmNote
PmRA PmDE Dm number -2416031 Cat1 CD
Name2 Cat2 HD M HD
ADS BDS B10172 M ADS BDS N IDS IDS 20198S2400A
HIC
 
 
20257-2341 B
 
 
Coord arcsec 2000 202541.88-234044.4 Mag 11.73 PmRA -11.00 PmDE -17.0
Tycho2 6907-00756-1 Calc delta mag 0.36 Calc coord yes
Tycho2
Tycho2 6907-00756-1 Pflag RAmdeg 306.42421756 DEmdeg -23.67915193
PmRA -3.8 PmDE -17.9 E RAmdeg 96 E DEmdeg 122
E pmRA 5.1 E pmDE 5.4 EpRAm 1986.12 EpDEm 1982.84
Num 2 Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 13.348 E BTmag 0.430 VTmag 11.734
E VTmag 0.182 Prox 147 TYC HIP
CCDM RAdeg 306.42422750 DEdeg -23.67910917 EpRA 1990 1.70
EpDE 1990 1.42 E RAdeg 99.5 E DEdeg 130.0 Posflg
Corr -0.1
CCDM
Ccdm 20257-2341 RComp Comp B Note1
Note2 Discov num HJ 2957 DRAs -0.19 DDEs 15.6
R dRAs 66 Year 1919 Theta 267 Rho 15.9
Obs 1 Vmag 11.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS B10172 M ADS BDS N IDS IDS 20198S2400B
HIC
 
 
20257-2341 C
 
 
Coord arcsec 2000 202543.96-234034.8 Mag 13.1 PmRA -20.00 PmDE -23.0
Calc delta mag 1.73 Calc coord yes
CCDM
Ccdm 20257-2341 RComp Comp C Note1
Note2 Discov num DAW DRAs 2.10 DDEs 25.9
R dRAs 66 Year 1919 Theta 061 Rho 19.2
Obs 1 Vmag 12.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20198S2400C
HIC