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Doubles in session


Current system
12566+2101
LDS 2891 AC


Nearby doubles
7' : 12569+2056
AZC 78

44' : 12569+2144
DBR 309

48' : 12533+2115
STF1687AB

50' : 12599+2115
SLW 807

51' : 12561+2011
TDS8597

57' : 12562+2157
SHN 168

59' : 12553+2005
LDS2890

71' : 13009+2134
GRV 860

71' : 12547+2206
MET 9

73' : 12571+2213
LDS2892

74' : 12595+2000
LDS2894

79' : 12598+1957
SLW 806

85' : 13000+2211
SKF1484

87' : 12507+2032
HU 640AB

90' : 13023+2028
J 2089

97' : 12573+1925
SLN 73

97' : 12496+2053
LDS5760

98' : 12515+2207
LDS 940AB

98' : 12514+2206
CFN 10

98' : 13013+2212
SLW 809

98' : 12531+1936
TOK 152

99' : 12551+1925
GWP1878

99' : 12530+1935
J 2087

107' : 13038+2135
LDS2897

113' : 12492+2147
STF1680

113' : 12578+2252
YSC 238AB



Selections
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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.

12566+2101 LDS 2891 AC

 
 
12h 56m 33.24s +21° 00' 44.8" P.A. 244.00 sep 35.3 mag 9.47,21.00 Sp G0
 
 
Coord 2000 12566+2101 Discov num LDS2891 Comp AC Coord arcsec 2000 12 56 33.24 +21 00 44.8
Date first 1956 Date last 2015 Obs 8
Pa first 245 Pa last 244.2 P.A. Now (θ) 244.2°
Sep first 35.0 Sep last 35.279 Sep. Now (ρ) 35.279"
Mag pri 9.47 Mag sec 21.00 delta mag (ΔM) 11.53 Spectral class G0 (yellow)
Pri motion ra +040 Sec motion ra
Pri motion dec -169 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
12566+2101 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 12 56 33 +21 00 45 HO 538 AB 2015 14 98 1.9 9.47 12.67 3.20
Show 12 56 33 +21 00 45 LDS 2891 AC 2015 8 244 35.3 9.47 21.00 11.53 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Coma Berenices Tycho2 1455-01310-1 Gaia DR2 3942774003429695744
 
 
WDS 12566+2101 LDS 2891 AC : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Ho_1883 Ma j Hough, G.W. 1883MNRAS..43..371H
Ho_1883 MNRAS 43, 371, 1883 (data also in Ho_1890) 1890AN....125....1H
Ho_1884 Ma j Hough, G.W. 1884MNRAS..44..365H
Ho_1884 MNRAS 44, 365, 1884 (data also in Ho_1890) 1890AN....125....1H
Ho_1885 Ma j Hough, G.W. 1885MNRAS..45..417H
Ho_1885 MNRAS 45, 417, 1885 (data also in Ho_1890) 1890AN....125....1H
Ho_1886 Ma j Hough, G.W. 1886MNRAS..46..393H
Ho_1886 MNRAS 46, 393, 1886 (data also in Ho_1890) 1890AN....125....1H
Ho_1887 Ma j Hough, G.W. 1887AN....116..273H
Ho_1887 AN 116, 273, 1887
Ho_1890 Ma j Hough, G.W. 1890AN....125....1H
Ho_1890 AN 125, 1, 1890
Ho_1890b Ma j Hough, G.W. 1890AJ......9..177H
Ho_1890b AJ 9, 177, 1890 (some data also in Ho_1890 or Ho_1894b) 1890AN....125....1H
Ho_1894a Ma - Hough, G.W. 1894MNRAS..54..251H
Ho_1894a MNRAS 54, 251, 1894
Ho_1894b Ma j Hough, G.W. (HO 304 - 490) 1894AN....135..281H
Ho_1894b AN 135, 281, 1894
Ho_1894c Ma - Hough, G.W. (measure by Dembowski, H.) 1894AN....135..281H
Ho_1894c AN 135, 281, 1894
Ho_1899a Ma j Hough, G.W. 1899AN....149..65H
Ho_1899a AN 149, 65, 1899
Ho_1899b Ma - Hough, G.W. (measure by Burnham, S.W.) 1899AN....149..65H
Ho_1899b AN 149, 65, 1899
Ho_1907 Ma - Hough, G.W. 1907PFAO....3c...1D
Ho_1907 Pub. Univ. Penn. 3, Pt. 3, 1907 (measures sent to Doolittle)
Ho_1932A Ma - Hough, G.W. 1932QB821.A43......
Ho_1932A cited in ADS, 1932 (unpublished measures sent to Aitken in manuscript by Fox)
LDS Luyten p.m. catalog (from additional DD list) ...................
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12566+2101 LDS2891 AC 1956 1 245 35.0 9.47 21.00 G0 125633.24+210044.8
12566+2101 LDS2891 AC 2000 3 245 35.3 9.47 21.00 G0 125633.24+210044.8
12566+2101 LDS2891 AC 2015 4 244 35.3 9.47 21.00 G0 125633.24+210044.8

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

 
 
WDS 12566+2101 LDS 2891 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 12566+2101 LDS 2891 AC : MEASURES
 
 
No records found.

 
 
WDS 12566+2101 : VIRTUAL EYEPIECE
 
 

12566+2101 HO 538A mag 9.47 Sp G0 12566+2101 HO 538B sep 1.8 P.A. 98.10 mag 12.67 12566+2101 LDS2891C sep 33.4 P.A. 242.60 mag 21 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 12566+2101 : ALADIN DSS IMAGE @ 12h 56m 33.24s +21° 00' 44.8"
 
 
 
 
WDS 12566+2101 LDS 2891 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

12566+2101 LDS2891AC distance=0' 12569+2056 AZC 78 distance=7' 12569+2144 DBR 309 distance=44' 12533+2115 STF1687AB distance=48' 12533+2115 STF1687AC distance=48' 12599+2115 SLW 807 distance=50' 12561+2011 TDS8597 distance=51' 12562+2157 SHN 168 distance=57' 12553+2005 LDS2890 distance=59' 13009+2134 GRV 860 distance=71' 12547+2206 MET 9 distance=71' 12571+2213 LDS2892 distance=73' 12595+2000 LDS2894 distance=74' 12598+1957 SLW 806 distance=79' 13000+2211 SKF1484 distance=85' 12507+2032 HU 640AB distance=87' 12507+2032 TOK 561AC distance=87' 13023+2028 J 2089 distance=90' 12573+1925 SLN 73 distance=97' 12496+2053 LDS5760 distance=97' 12515+2207 LDS 940AB distance=98' 12515+2207 RAO 284AC distance=98' 12514+2206 CFN 10 distance=98' 13013+2212 SLW 809 distance=98' 12531+1936 TOK 152 distance=98' 12551+1925 GWP1878 distance=99' 12530+1935 J 2087 distance=99' 13038+2135 LDS2897 distance=107' 12492+2147 STF1680 distance=113' 12578+2252 YSC 238AB distance=113' 12541+2255 LDS5762 distance=121' 12522+2247 GIC 111 distance=123' 13050+2139 SLW 819 distance=125' 12519+1910 STF1685AB distance=129' 12519+1910 SHJ 153AC distance=129' 12519+1910 SHJ 153BC distance=129' 13013+2258 LDS2895 distance=134' 12481+2204 AZC 77 distance=134' 12494+1931 TDS 679 distance=135' 13063+2044 HU 739 distance=138' 13064+2109 CHR 150Aa,Ab distance=138' 13064+2109 COU 11AB distance=138' 12575+1842 BGH 5 distance=140' 13042+1924 STF1715 distance=145' 13020+1857 SLW 812 distance=146' 12571+2330 LDS 942 distance=150' 13040+2249 CVR 133 distance=150' 13065+1959 SLW 824 distance=153' 13056+2236 LDS2898AB distance=157' 13056+2236 LDS2898Aa,Ab distance=157' 13064+2217 WSI 104 distance=157' 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 12566+2101 HO 538 AB 98 1.9
Show 12566+2101 LDS2891 AC 244 35.3
Show 12569+2056 AZC 78 308 11.9 7
Show 12569+2144 DBR 309 315 2.9 44
Show 12533+2115 STF1687 AB 203 1.2 48
Show 12533+2115 STF1687 AC 127 28.5 48
Show 12599+2115 SLW 807 43 9.1 50
Show 12561+2011 TDS8597 344 0.5 51
Show 12562+2157 SHN 168 -1 0.1 57
Show 12553+2005 LDS2890 121 116.6 59
Show 13009+2134 GRV 860 232 30.6 71
Show 12547+2206 MET 9 50 1.7 71
Show 12571+2213 LDS2892 201 15.9 73
Show 12595+2000 LDS2894 115 42.6 74
Show 12598+1957 SLW 806 117 39.9 79
Show 13000+2211 SKF1484 201 1.9 85
Show 12507+2032 HU 640 AB 259 0.5 87
Show 12507+2032 TOK 561 AC 119 999.9 87
Show 13023+2028 J 2089 223 6.8 90
Show 12573+1925 SLN 73 173 12.2 97
Show 12496+2053 LDS5760 159 11.1 97
Show 12515+2207 LDS 940 AB 53 84.7 98
Show 12515+2207 RAO 284 AC 90 1.3 98
Show 12514+2206 CFN 10 92 1.3 98
Show 13013+2212 SLW 809 160 22.1 98
Show 12531+1936 TOK 152 321 10.8 98
Show 12551+1925 GWP1878 41 26.8 99
Show 12530+1935 J 2087 164 6.7 99
Show 13038+2135 LDS2897 105 9.3 107
Show 12492+2147 STF1680 335 2.9 113
Show 12578+2252 YSC 238 AB 85 1.3 113
Show 12541+2255 LDS5762 26 12.6 121
Show 12522+2247 GIC 111 199 230.8 123
Show 13050+2139 SLW 819 188 20.8 125
Show 12519+1910 STF1685 AB 202 16.0 129
Show 12519+1910 SHJ 153 AC 328 241.7 129
Show 12519+1910 SHJ 153 BC 331 251.3 129
Show 13013+2258 LDS2895 237 106.9 134
Show 12481+2204 AZC 77 329 28.3 134
Show 12494+1931 TDS 679 168 1.1 135
Show 13063+2044 HU 739 196 1.7 138
Show 13064+2109 CHR 150 Aa,Ab 286 0.0 138
Show 13064+2109 COU 11 AB 314 1.6 138
Show 12575+1842 BGH 5 222 82.0 140
Show 13042+1924 STF1715 231 7.3 145
Show 13020+1857 SLW 812 38 54.4 146
Show 12571+2330 LDS 942 87 7.7 150
Show 13040+2249 CVR 133 196 53.9 150
Show 13065+1959 SLW 824 289 15.7 153
Show 13056+2236 LDS2898 AB 47 20.0 157
Show 13056+2236 LDS2898 Aa,Ab 10 1.9 157

 
 
WDS 12566+2101 : COMPONENTS
 
 
  A B
B pa=98.1°
sep=1.81"
 
C pa=242.6°
sep=33.39"
pa=244.4°
sep=34.88"
 
 
12566+2101 A
 
 
Coord arcsec 2000 125633.24+210044.8 Mag 9.47 Spectral class G0 (yellow) PmRA 40.00
PmDE -169.0 HIP 63168 Tycho2 1455-01310-1 BD BD+21 2470
Tycho2
Tycho2 1455-01310-1 Pflag RAmdeg 194.13861773 DEmdeg 21.01204716
PmRA 40.2 PmDE -168.8 E RAmdeg 12 E DEmdeg 14
E pmRA 0.8 E pmDE 0.8 EpRAm 1987.99 EpDEm 1986.62
Num 14 Q RAmdeg 1.4 Q DEmdeg 0.9 Q pmRA 1.4
Q pmDE 0.9 BTmag 10.244 E BTmag 0.028 VTmag 9.471
E VTmag 0.020 Prox 21 TYC T HIP 63168
CCDM A RAdeg 194.13851722 DEdeg 21.01244417 EpRA 1990 1.68
EpDE 1990 1.55 E RAdeg 13.1 E DEdeg 14.5 Posflg
Corr 0.3
Hipparcos
Catalog H HIP 63168 Proxy H RAhms 12 56 33.24
DEdms +21 00 44.8 Vmag 9.38 VarFlag R Vmag H
RAdeg 194.139 DEdeg 21.0125 AstroRef A Plx 12.74
CCDM 12566+2101 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual B M HIP AB
Theta 101 Rho 2.074 HD BD BD+21 2470
CD CP Dm number +21 2470 VIred 0.76
SpType G0 R SpType Coord arcsec 2000 125633.24+210044.8
Hipparcos 2
HIP 63168 Sn 15 So 3 Nc 2
RArad 3.3883563488 DErad 0.3667365647 Plx 10.51 PmRA 37.17
PmDE -169.64 E RArad 1.19 E DErad 0.96 E Plx 1.51
E pmRA 2.05 E pmDE 1.14 Hpmag 9.5178 E Hpmag 0.0024
SHp 0.018 VA 0 BV 0 E BV 0
VI 0
CCDM
Ccdm 12566+2101 RComp Comp A Note1
Note2 Discov num DRAs -2.82 DDEs -17.1
R dRAs 10 Year Theta Rho
Obs 3 Vmag 9.3 Sp G0 PmNote *
PmRA 20 PmDE -180 Dm number +21 2470 Cat1 BD
Name2 +21 1327 Cat2 AGK2/3 HD M HD
ADS BDS A 8711 M ADS BDS N IDS IDS 12516N2134A
HIC 63168
 
 
12566+2101 B
 
 
Coord arcsec 2000 125633.37+210044.5 Mag 12.67 PmRA 42.00 PmDE -171.0
Calc delta mag 3.2 Calc coord yes
CCDM
Ccdm 12566+2101 RComp Comp B Note1
Note2 Discov num HO 538 DRAs DDEs
R dRAs Year 1953 Theta 112 Rho 2.2
Obs 5 Vmag 12.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 8711 M ADS BDS N IDS IDS 12516N2134B
HIC 63168
 
 
12566+2101 C
 
 
Coord arcsec 2000 125631.12+210029.4 Mag 21 Calc delta mag 11.53 Calc coord yes
CCDM
Ccdm 12566+2101 RComp Comp C Note1
Note2 Discov num LDS2891 DRAs DDEs
R dRAs Year 1956 Theta 245 Rho 35.0
Obs 1 Vmag 21.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 12517N2133B
HIC