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Current system
11279+0251
STFA 19 AD


Nearby doubles
21' : 11268+0301
STF1540AB

34' : 11300+0305
SLE 604

36' : 11279+0327
SLE 602

38' : 11300+0312
BU 340

40' : 11290+0322
GRV1055

47' : 11249+0250
SLE 598

50' : 11275+0340
SLE 601

52' : 11266+0339
HJ 1191

54' : 11314+0304
J 85AB

55' : 11284+0157
NSN 614

61' : 11279+0151
SLE 603

63' : 11321+0242
GWP1602

64' : 11246+0213
SLE 597

67' : 11239+0321
SLW 595

68' : 11276+0359
LSC 140

69' : 11251+0346
SLE 599

69' : 11245+0205
SLW 598

71' : 11285+0141
EPI 7

72' : 11260+0357
HJ 1189

74' : 11231+0258
BAL2381

77' : 11229+0241
NSN 612

78' : 11244+0155
A 2574

94' : 11227+0200
SKF1579

95' : 11340+0226
GWP1611

98' : 11216+0230
KPP2633

99' : 11218+0217
CBL 338



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

11279+0251 STFA 19 AD

 
 
11h 27m 56.23s +02° 51' 22.5" P.A. 92.00 sep 761.5 mag 5.05,9.51 Sp G7.5IIIa dist. 172.41 pc (562.4 l.y.)
 
 
Coord 2000 11279+0251 Discov num STFA 19 Comp AD Coord arcsec 2000 11 27 56.23 +02 51 22.5
Date first 1875 Date last 2019 Obs 11
Pa first 92 Pa last 92.1 P.A. Now (θ) 92.1°
Sep first 766.5 Sep last 761.5 Sep. Now (ρ) 761.5"
Mag pri 5.05 Mag sec 9.51 delta mag (ΔM) 4.46 Spectral class G7.5IIIa (yellow)
Pri motion ra +016 Sec motion ra -005
Pri motion dec -010 Sec motion dec -018
Notes N (See Notes)
rPM=1.191
This double is not physical.
 
 
11279+0251 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Tau Leo 118875 11 27 56 +02 51 22 STFA 19 AB 2019 77 181 89.2 5.05 7.47 2.42
Show 118875 11 27 56 +02 51 22 STFA 19 AD 2019 11 92 761.5 5.05 9.51 4.46 <===
Show 118876 11 27 56 +02 49 54 STFA 19 BC 2019 8 234 102.4 7.47 14.48 7.01
Show 118876 11 27 56 +02 49 54 STFA 19 BD 2019 9 86 767.5 7.47 9.51 2.04
Show 11 27 51 +02 48 48 BUP 9002 CE 2015 14 192 9.2 14.48 14.22 0.26
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Leo SAO 118875 HIP 55945 Tycho2 0267-01193-1
Gaia DR2 3812336190247422336 HD 99648 HR 4418 GC 15729
BD BD+03 2504 Bayer Tau Leonis Bayer name Tau Leo Flamsteed 84 Leonis
Flamsteed name 84 Leo FK5 1297 Distance 172.41 Distance ly 562.4
Bayer greek τ Leo
 
 
WDS 11279+0251 STFA 19 AD : NOTES
 
 
discov_num notes refcode
STFA 19 tau Leo = 84 Leo. STTA110. B is BD+03@2505.
AB: H 6 12. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
 
 
DISCOVERER
 
 
idgroup discov author
1 BUP Burnham proper motion stars (see Burnham, Carnegie Inst. Wash. #168, 1913)
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
11279+0251 STFA 19 AD 1991 3 92 762.2 5.05 9.51 N 112756.23+025122.5
11279+0251 STFA 19 AD 2000 4 92 762.1 5.05 9.51 N 112756.23+025122.5
11279+0251 STFA 19 AD 2015 6 92 758.7 5.05 9.51 G7.5IIIa N 112756.23+025122.5
11279+0251 STFA 19 AD 2018 9 92 761.2 5.05 9.51 G7.5IIIa N 112756.23+025122.5
11279+0251 STFA 19 AD 2019 11 92 761.5 5.05 9.51 G7.5IIIa N 112756.23+025122.5

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

 
 
WDS 11279+0251 STFA 19 AD : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 11279+0251 STFA 19 AD : MEASURES
 
 
No records found.

 
 
WDS 11279+0251 : VIRTUAL EYEPIECE
 
 

11279+0251 STFA 19A mag 5.05 Sp G8II 11279+0251 STFA 19B sep 89.0 P.A. 180.60 mag 7.47 Sp F2 11279+0251 BUP9002C sep 174.1 P.A. 207.70 mag 14.48 11279+0251 STFA 19D sep 760.6 P.A. 92.10 mag 9.51 11279+0251 BUP9002E sep 183.0 P.A. 206.90 mag 14.22 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 11279+0251 : ALADIN DSS IMAGE @ 11h 27m 56.23s +02° 51' 22.5"
 
 
 
 
WDS 11279+0251 STFA 19 AD : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

11279+0251 STFA 19AD distance=0' 11279+0251 STFA 19BC distance=2' 11279+0251 STFA 19BD distance=2' 11279+0251 BUP9002CE distance=3' 11268+0301 STF1540AB distance=21' 11268+0301 STF1540AC distance=21' 11300+0305 SLE 604 distance=34' 11279+0327 SLE 602 distance=36' 11300+0312 BU 340 distance=38' 11290+0322 GRV1055 distance=40' 11249+0250 SLE 598 distance=47' 11275+0340 SLE 601 distance=50' 11266+0339 HJ 1191 distance=52' 11314+0304 J 85AB distance=54' 11284+0157 NSN 614 distance=55' 11269+0344 WNO 40DE distance=56' 11269+0344 WNO 40AC distance=56' 11269+0344 SLE 600AD distance=56' 11269+0344 WNO 40AE distance=56' 11279+0151 SLE 603 distance=61' 11321+0242 GWP1602 distance=63' 11246+0213 SLE 597 distance=64' 11239+0321 SLW 595 distance=67' 11276+0359 LSC 140 distance=68' 11251+0346 SLE 599 distance=69' 11245+0205 SLW 598 distance=69' 11285+0141 EPI 7 distance=71' 11260+0357 HJ 1189 distance=72' 11231+0258 BAL2381 distance=74' 11229+0241 NSN 612 distance=77' 11244+0155 A 2574 distance=78' 11227+0200 SKF1579 distance=94' 11340+0226 GWP1611 distance=95' 11216+0230 KPP2633 distance=98' 11218+0217 CBL 338 distance=99' 11261+0114 EPI 6 distance=102' 11338+0346 GWP1608 distance=104' 11219+0343 EPI 4 distance=104' 11274+0435 CBL 341 distance=105' 11240+0124 OCC 239 distance=105' 11230+0408 A 2776AB distance=107' 11230+0408 A 2776AB,C distance=107' 11290+0105 RST5354 distance=107' 11206+0230 EPI 3 distance=112' 11210+0338 ITF 75 distance=115' 11315+0104 WIS 186 distance=120' 11221+0128 UC 2124 distance=121' 11344+0407 J 86 distance=123' 11343+0414 GWP1612 distance=127' 11362+0318 A 2777 distance=128' 11351+0137 GWP1615 distance=131' 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 11279+0251 STFA 19 AB 181 89.2
Show 11279+0251 STFA 19 AD 92 761.5
Show 11279+0251 STFA 19 BC 234 102.4 2
Show 11279+0251 STFA 19 BD 86 767.5 2
Show 11279+0251 BUP9002 CE 192 9.2 3
Show 11268+0301 STF1540 AB 146 28.6 21
Show 11268+0301 STF1540 AC 191 205.2 21
Show 11300+0305 SLE 604 352 25.5 34
Show 11279+0327 SLE 602 97 31.8 36
Show 11300+0312 BU 340 11 4.4 38
Show 11290+0322 GRV1055 284 33.7 40
Show 11249+0250 SLE 598 219 26.8 47
Show 11275+0340 SLE 601 11 31.6 50
Show 11266+0339 HJ 1191 268 13.3 52
Show 11314+0304 J 85 AB 163 4.8 54
Show 11284+0157 NSN 614 297 2.3 55
Show 11269+0344 WNO 40 DE 326 26.5 56
Show 11269+0344 WNO 40 AC 70 8.5 56
Show 11269+0344 SLE 600 AD 104 23.1 56
Show 11269+0344 WNO 40 AE 25 18.1 56
Show 11279+0151 SLE 603 71 16.0 61
Show 11321+0242 GWP1602 259 36.2 63
Show 11246+0213 SLE 597 162 42.1 64
Show 11239+0321 SLW 595 350 46.5 67
Show 11276+0359 LSC 140 18 0.3 68
Show 11251+0346 SLE 599 44 19.3 69
Show 11245+0205 SLW 598 311 24.3 69
Show 11285+0141 EPI 7 231 16.4 71
Show 11260+0357 HJ 1189 115 20.4 72
Show 11231+0258 BAL2381 265 13.5 74
Show 11229+0241 NSN 612 173 1.6 77
Show 11244+0155 A 2574 66 2.0 78
Show 11227+0200 SKF1579 207 40.7 94
Show 11340+0226 GWP1611 129 14.6 95
Show 11216+0230 KPP2633 188 24.4 98
Show 11218+0217 CBL 338 99 10.5 99
Show 11261+0114 EPI 6 178 2.9 102
Show 11338+0346 GWP1608 276 140.9 104
Show 11219+0343 EPI 4 311 2.3 104
Show 11274+0435 CBL 341 260 64.6 105
Show 11240+0124 OCC 239 -1 0.0 105
Show 11230+0408 A 2776 AB 245 0.2 107
Show 11230+0408 A 2776 AB,C 61 6.2 107
Show 11290+0105 RST5354 288 0.9 107
Show 11206+0230 EPI 3 100 12.6 112
Show 11210+0338 ITF 75 168 332.8 115
Show 11315+0104 WIS 186 299 999.9 120
Show 11221+0128 UC 2124 35 9.6 121
Show 11344+0407 J 86 91 2.4 123
Show 11343+0414 GWP1612 332 5.6 127
Show 11362+0318 A 2777 88 4.0 128

 
 
WDS 11279+0251 : COMPONENTS
 
 
  A B C D
B pa=180.6°
sep=89.00"
 
C pa=207.7°
sep=174.13"
pa=230.8°
sep=103.21"
 
D pa=92.1°
sep=760.56"
pa=85.4°
sep=763.40"
pa=81.5°
sep=850.39"
 
E pa=206.9°
sep=183.01"
pa=227.8°
sep=110.51"
pa=191.7°
sep=9.22"
pa=260.9°
sep=853.62"
 
 
11279+0251 A
 
 
Name Tau Leo Coord arcsec 2000 112756.23+025122.5 Mag 5.05 Spectral class G8II (yellow)
PmRA 16.00 PmDE -10.0 SAO 118875 HIP 55945
Tycho2 0267-01193-1 HD 99648 HR 4418 GC 15729
BD BD+03 2504 Bayer Tau Leonis Bayer name Tau Flamsteed 84 Leonis
Flamsteed name 84 Leo FK5 1297
Tycho2
Tycho2 0267-01193-1 Pflag RAmdeg 171.98433197 DEmdeg 2.85626784
PmRA 16.9 PmDE -9.9 E RAmdeg 4 E DEmdeg 4
E pmRA 0.3 E pmDE 0.3 EpRAm 1988.87 EpDEm 1989.18
Num 30 Q RAmdeg 0.5 Q DEmdeg 1.0 Q pmRA 0.7
Q pmDE 1.0 BTmag 6.204 E BTmag 0.014 VTmag 5.053
E VTmag 0.009 Prox 893 TYC T HIP 55945
CCDM RAdeg 171.98429333 DEdeg 2.85629083 EpRA 1990 1.78
EpDE 1990 1.66 E RAdeg 3.5 E DEdeg 3.9 Posflg
Corr 0.2
SAO
SAO 118875 DelFlag RA1950 PmRA1950 0.0011
DE1950 PmDE1950 -0.017 Vmag 5.2 SpType K0
Double code Source 74 CatNum 1297 DM BD+03 2504
DMcomp BDsup HD 99648 M HD 0
GC 15729 RA1950rad 2.99047097 DE1950rad 0.05466041 PmRA2000 0.0013
PmDE2000 -0.013
Hipparcos
Catalog H HIP 55945 Proxy RAhms 11 27 56.23
DEdms +02 51 22.6 Vmag 4.95 VarFlag R Vmag G
RAdeg 171.984 DEdeg 2.85629 AstroRef Plx 5.25
CCDM 11279+0251 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 99648 BD BD+03 2504
CD CP Dm number +03 2504 VIred 0.95
SpType G8II-III R SpType Coord arcsec 2000 112756.23+025122.6
Hipparcos 2
HIP 55945 Sn 5 So 0 Nc 1
RArad 3.0016921433 DErad 0.0498516779 Plx 5.8 PmRA 16.89
PmDE -9.81 E RArad 0.27 E DErad 0.2 E Plx 0.33
E pmRA 0.37 E pmDE 0.29 Hpmag 5.116 E Hpmag 0.0006
SHp 0.004 VA 0 BV 1 E BV 0
VI 0.95
CCDM
Ccdm 11279+0251 RComp Comp A Note1
Note2 Discov num DRAs 2.26 DDEs 22.2
R dRAs 10 Year Theta Rho
Obs 4 Vmag 5.2 Sp K0 PmNote *
PmRA 17 PmDE -17 Dm number +03 2504 Cat1 BD
Name2 +03 1498 Cat2 AGK2/3 HD 99648 M HD
ADS BDS B 5790 M ADS BDS N IDS IDS 11227N0326A
HIC 55945
 
 
11279+0251 B
 
 
Coord arcsec 2000 112756.17+024953.5 Coord calc 112756.17+024953.5 Mag 7.47 Spectral class F2 (yellow-white)
PmRA -90.00 PmDE 17.0 SAO 118876 Tycho2 0267-01194-1
HD 99649 DM BD+03 2505 Calc delta mag 2.42
Tycho2
Tycho2 0267-01194-1 Pflag RAmdeg 171.98406448 DEmdeg 2.83153359
PmRA -89.6 PmDE 16.8 E RAmdeg 5 E DEmdeg 7
E pmRA 1.5 E pmDE 1.4 EpRAm 1991.50 EpDEm 1991.10
Num 10 Q RAmdeg 0.6 Q DEmdeg 1.0 Q pmRA 0.5
Q pmDE 1.0 BTmag 7.870 E BTmag 0.016 VTmag 7.466
E VTmag 0.012 Prox 893 TYC T HIP
CCDM RAdeg 171.98426861 DEdeg 2.83149472 EpRA 1990 1.80
EpDE 1990 1.68 E RAdeg 5.1 E DEdeg 6.6 Posflg
Corr 0.1
SAO
SAO 118876 DelFlag RA1950 PmRA1950 -0.0065
DE1950 PmDE1950 -0.007 Vmag 8 SpType G5
Double code Source 30 CatNum 4285 DM BD+03 2505
DMcomp BDsup HD 99649 M HD 0
GC RA1950rad 2.99049158 DE1950rad 0.05421896 PmRA2000 -0.0063
PmDE2000 -0.003
CCDM
Ccdm 11279+0251 RComp Comp B Note1
Note2 Discov num STF4019 DRAs 2.18 DDEs -67.2
R dRAs 10 Year 1932 Theta 176 Rho 91.1
Obs 99 Vmag 8.1 Sp G5 PmNote *
PmRA -88 PmDE -1 Dm number +03 2505 Cat1 BD
Name2 +03 1499 Cat2 AGK2/3 HD 99649 M HD
ADS BDS B 5790 M ADS BDS N IDS IDS 11227N0326B
HIC
 
 
11279+0251 C
 
 
Coord arcsec 2000 112750.83+024848.3 Coord calc 112750.83+024848.3 Mag 14.48 PmRA -5.00
PmDE 53.0 Calc delta mag 9.43
CCDM
Ccdm 11279+0251 RComp B Comp C Note1
Note2 Discov num STF4019 DRAs DDEs
R dRAs Year 1910 Theta 234 Rho 106.5
Obs 1 Vmag 14.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 11227N0326C
HIC
 
 
11279+0251 D
 
 
Coord arcsec 2000 112846.96+025054.6 Mag 9.51 PmRA -5.00 PmDE -18.0
Tycho2 0267-00414-1 Calc delta mag 4.46 Calc coord yes
Tycho2
Tycho2 0267-00414-1 Pflag RAmdeg 172.19609829 DEmdeg 2.84770612
PmRA -2.4 PmDE -17.0 E RAmdeg 21 E DEmdeg 24
E pmRA 1.3 E pmDE 1.3 EpRAm 1985.57 EpDEm 1983.14
Num 8 Q RAmdeg 1.2 Q DEmdeg 0.9 Q pmRA 1.3
Q pmDE 0.9 BTmag 11.288 E BTmag 0.092 VTmag 9.506
E VTmag 0.031 Prox 999 TYC T HIP
CCDM RAdeg 172.19610083 DEdeg 2.84774417 EpRA 1990 1.68
EpDE 1990 1.72 E RAdeg 25.2 E DEdeg 31.0 Posflg
Corr 0.0
CCDM
Ccdm 11279+0251 RComp Comp D Note1
Note2 Discov num STF4019 DRAs 53.05 DDEs -5.7
R dRAs 10 Year 1875 Theta 092 Rho 764.8
Obs 2 Vmag 10.0 Sp PmNote *
PmRA -7 PmDE -28 Dm number +03 2507 Cat1 BD
Name2 +03 1502 Cat2 AGK2/3 HD M HD
ADS BDS B 5790 M ADS BDS N IDS IDS 11227N0326D
HIC
 
 
11279+0251 E
 
 
Coord arcsec 2000 112750.71+024839.3 Mag 14.22 Calc delta mag 9.17 Calc coord yes