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Current system
10091+2531
A 1988
HD 87956


Nearby doubles
30' : 10092+2501
FOX 165

46' : 10066+2602
TDS 569

51' : 10120+2603
CVR1273

56' : 10131+2521
KPP3809

59' : 10059+2611
KPP3224

60' : 10049+2543
LDS3954

69' : 10040+2521
COU 589

73' : 10138+2457
SLW 448

74' : 10085+2419
LSC 125

76' : 10144+2557
TDS7135

78' : 10082+2648
ES 431AB

79' : 10140+2449
HJ 477AB

84' : 10149+2505
DAM2178

84' : 10144+2449
CVR 553

90' : 10036+2619
LDS3951

93' : 10157+2506
KPP3812

93' : 10156+2504
FOX 14

94' : 10145+2434
GRV 814

98' : 10144+2638
TDS7134

99' : 10064+2702
HJ 828

101' : 10106+2353
A 1989

104' : 10167+2522
BVD 81

104' : 10017+2506
DAM1928

104' : 10023+2621
COU1125

109' : 10169+2552
BUP 131AB

111' : 10012+2502
SHN 19



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Neglected List I
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

10091+2531 A 1988 (HD 87956)

 
 
10h 09m 04.77s +25° 31' 03.2" P.A. 229.00 sep 0.4 mag 10.00,9.80 Sp K0 dist. 117.65 pc (383.77 l.y.)
 
 
Coord 2000 10091+2531 Discov num A  1988 Comp Coord arcsec 2000 10 09 04.77 +25 31 03.2
Date first 1909 Date last 2014 Obs 22
Pa first 186 Pa last 228.9 P.A. Now (θ) 228.9°
Sep first 0.8 Sep last 0.394 Sep. Now (ρ) 0.394"
Mag pri 10.00 Mag sec 9.80 delta mag (ΔM) 0.2 Spectral class K0 (yellow-orange)
Pri motion ra +003 Sec motion ra +003
Pri motion dec -057 Sec motion dec -057
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 87956 Constellation Leo SAO 81205 HIP 49719
Tycho2 1971-00955-1 Gaia DR2 738659161447539712 HD 87956 BD BD+26 2051
Distance 117.65 Distance ly 383.77
 
 
WDS 10091+2531 A 1988 (HD 87956) : NOTES
 
 
No records found.

 
 
DISCOVERER
 
 
idgroup discov author
1 A Aitken, R.G.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
10091+2531 A 1988 1997 19 218 0.4 10.00 9.80 K0 D 100904.77+253103.2
10091+2531 A 1988 2008 20 223 0.4 10.00 9.80 K0 D 100904.77+253103.2
10091+2531 A 1988 2014 22 229 0.4 10.00 9.80 K0 100904.77+253103.2

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

 
 
WDS 10091+2531 A 1988 (HD 87956) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 10091+2531 A 1988 (HD 87956) : MEASURES
 
 
No records found.

 
 
WDS 10091+2531 (HD 87956) : VIRTUAL EYEPIECE
 
 

10091+2531 A 1988A mag 10 Sp K0 10091+2531 A 1988B sep 0.4 P.A. 226.00 mag 9.8 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 10091+2531 (HD 87956) : ALADIN DSS IMAGE @ 10h 09m 04.77s +25° 31' 03.2"
 
 
 
 
WDS 10091+2531 A 1988 (HD 87956) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

10091+2531 A 1988 distance=0' 10092+2501 FOX 165 distance=30' 10066+2602 TDS 569 distance=46' 10120+2603 CVR1273 distance=51' 10131+2521 KPP3809 distance=56' 10059+2611 KPP3224 distance=59' 10049+2543 LDS3954 distance=60' 10040+2521 COU 589 distance=69' 10138+2457 SLW 448 distance=73' 10085+2419 LSC 125 distance=74' 10144+2557 TDS7135 distance=76' 10082+2648 ES 431AB distance=78' 10082+2648 ES 431AC distance=78' 10082+2648 ES 431BC distance=79' 10140+2449 HJ 477AB distance=79' 10140+2449 HJ 477AC distance=79' 10140+2449 HJ 477AD distance=79' 10140+2449 GII 169Aa,Ab distance=79' 10149+2505 DAM2178 distance=84' 10144+2449 CVR 553 distance=84' 10036+2619 LDS3951 distance=90' 10157+2506 KPP3812 distance=93' 10156+2504 FOX 14 distance=93' 10145+2434 GRV 814 distance=94' 10144+2638 TDS7134 distance=98' 10064+2702 HJ 828 distance=99' 10106+2353 A 1989 distance=101' 10167+2522 BVD 81 distance=104' 10017+2506 DAM1928 distance=104' 10023+2621 COU1125 distance=104' 10169+2552 BUP 131AB distance=109' 10169+2552 SKF1468AC distance=109' 10012+2502 SHN 19 distance=111' 10166+2620 LDS3972 distance=113' 10026+2420 POU3070 distance=114' 10114+2722 LDS3961 distance=115' 10171+2622 CVR1277 distance=120' 10176+2611 FMR 90 distance=122' 10153+2400 CVR1275 distance=125' 10177+2621 CVR 556 distance=127' 10131+2725 STT 213AB distance=127' 10131+2725 SKF2825AB,C distance=127' 10022+2359 POU3069 distance=132' 10041+2727 TDS6998 distance=134' 10120+2740 TDS7099 distance=135' 10147+2724 SKF2378 distance=136' 10000+2433 CHR 145 distance=136' 10029+2722 HJ 472AB distance=139' 10029+2722 HJ 472AC distance=139' 10020+2714 LDS3948 distance=141' 10130+2321 RAO 241 distance=141' 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 10091+2531 A 1988 229 0.4 0
Show 10092+2501 FOX 165 70 7.5 30
Show 10066+2602 TDS 569 89 2.3 46
Show 10120+2603 CVR1273 137 4.4 51
Show 10131+2521 KPP3809 275 1.8 56
Show 10059+2611 KPP3224 177 0.8 59
Show 10049+2543 LDS3954 313 11.4 60
Show 10040+2521 COU 589 68 0.4 69
Show 10138+2457 SLW 448 92 10.9 73
Show 10085+2419 LSC 125 307 0.4 74
Show 10144+2557 TDS7135 92 0.5 76
Show 10082+2648 ES 431 AB 352 35.7 78
Show 10082+2648 ES 431 AC 355 40.9 78
Show 10082+2648 ES 431 BC 15 5.7 79
Show 10140+2449 HJ 477 AB 305 2.5 79
Show 10140+2449 HJ 477 AC 358 14.6 79
Show 10140+2449 HJ 477 AD 332 46.6 79
Show 10140+2449 GII 169 Aa,Ab 123 0.2 79
Show 10149+2505 DAM2178 3 3.9 84
Show 10144+2449 CVR 553 195 19.9 84
Show 10036+2619 LDS3951 278 16.0 90
Show 10157+2506 KPP3812 185 2.9 93
Show 10156+2504 FOX 14 185 2.9 93
Show 10145+2434 GRV 814 205 22.1 94
Show 10144+2638 TDS7134 262 0.8 98
Show 10064+2702 HJ 828 307 12.5 99
Show 10106+2353 A 1989 285 3.4 101
Show 10167+2522 BVD 81 28 79.6 104
Show 10017+2506 DAM1928 230 3.1 104
Show 10023+2621 COU1125 251 2.8 104
Show 10169+2552 BUP 131 AB 264 869.0 109
Show 10169+2552 SKF1468 AC 191 9.0 109
Show 10012+2502 SHN 19 275 0.3 111
Show 10166+2620 LDS3972 267 8.5 113
Show 10026+2420 POU3070 263 9.9 114
Show 10114+2722 LDS3961 70 13.8 115
Show 10171+2622 CVR1277 275 4.0 120
Show 10176+2611 FMR 90 90 167.7 122
Show 10153+2400 CVR1275 236 3.1 125
Show 10177+2621 CVR 556 52 7.5 127
Show 10131+2725 STT 213 AB 125 1.1 127
Show 10131+2725 SKF2825 AB,C 238 20.8 127
Show 10022+2359 POU3069 343 3.5 132
Show 10041+2727 TDS6998 297 0.8 134
Show 10120+2740 TDS7099 203 0.5 135
Show 10147+2724 SKF2378 313 1.4 136
Show 10000+2433 CHR 145 158 0.1 136
Show 10029+2722 HJ 472 AB 300 9.5 139
Show 10029+2722 HJ 472 AC 127 16.4 139
Show 10020+2714 LDS3948 130 144.0 141
Show 10130+2321 RAO 241 16 0.6 141

 
 
WDS 10091+2531 : COMPONENTS
 
 
  A
B pa=226.0°
sep=0.37"
 
 
10091+2531 A
 
 
Name HD 87956 Coord arcsec 2000 100904.77+253103.2 Mag 10 Spectral class K0 (yellow-orange)
PmRA 3.00 PmDE -57.0
CCDM
Ccdm 10091+2531 RComp Comp A Note1
Note2 Discov num DRAs -1.21 DDEs 2.8
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.5 Sp K0 PmNote *
PmRA 11 PmDE -63 Dm number +26 2051 Cat1 BD
Name2 +25 1133 Cat2 AGK2/3 HD 87956 M HD
ADS BDS A 7657 M ADS BDS N IDS IDS 10034N2601A
HIC 49719
 
 
10091+2531 B
 
 
Coord arcsec 2000 100904.75+253102.9 Mag 9.8 PmRA 3.00 PmDE -57.0
SAO 81205 HIP 49719 Tycho2 1971-00955-1 HD 87956
BD BD+26 2051 Calc delta mag 0.2 Calc coord yes
Tycho2
Tycho2 1971-00955-1 Pflag RAmdeg 152.26986067 DEmdeg 25.51750684
PmRA 2.7 PmDE -56.5 E RAmdeg 11 E DEmdeg 13
E pmRA 1.1 E pmDE 1.1 EpRAm 1989.70 EpDEm 1989.09
Num 12 Q RAmdeg 1.1 Q DEmdeg 1.0 Q pmRA 1.0
Q pmDE 0.9 BTmag 9.915 E BTmag 0.027 VTmag 9.236
E VTmag 0.019 Prox 999 TYC T HIP 49719
CCDM AB RAdeg 152.26985417 DEdeg 25.51764028 EpRA 1990 1.57
EpDE 1990 1.51 E RAdeg 11.8 E DEdeg 13.6 Posflg P
Corr 0.1
SAO
SAO 81205 DelFlag RA1950 PmRA1950 0.0011
DE1950 PmDE1950 -0.054 Vmag 8.6 SpType K0
Double code Source 34 CatNum 5227 DM BD+26 2051
DMcomp BDsup HD 87956 M HD 0
GC RA1950rad 2.64533226 DE1950rad 0.44966552 PmRA2000 0.0011
PmDE2000 -0.05
Hipparcos
Catalog H HIP 49719 Proxy H RAhms 10 09 04.77
DEdms +25 31 03.7 Vmag 9.11 VarFlag R Vmag H
RAdeg 152.27 DEdeg 25.5177 AstroRef A Plx 9.13
CCDM 10091+2531 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 212 Rho 0.497 HD 87956 BD BD+26 2051
CD CP Dm number +26 2051 VIred 0.65
SpType K0 R SpType Coord arcsec 2000 100904.77+253103.7
Hipparcos 2
HIP 49719 Sn 15 So 3 Nc 2
RArad 2.6576109612 DErad 0.445367891 Plx 8.5 PmRA 6.69
PmDE -55.45 E RArad 1.92 E DErad 1.24 E Plx 1.98
E pmRA 1.98 E pmDE 1.24 Hpmag 9.2315 E Hpmag 0.0027
SHp 0.021 VA 0 BV 0.548 E BV 0.026
VI 0.62
CCDM
Ccdm 10091+2531 RComp Comp B Note1
Note2 Discov num A 1988 DRAs DDEs
R dRAs Year 1958 Theta 199 Rho 0.6
Obs 6 Vmag 9.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 7657 M ADS BDS N IDS IDS 10034N2601B
HIC 49719