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Doubles in session


Current system
11239+1032
STF 1536 AB
Tsze tseang


Nearby doubles
24' : 11232+1011
RAO 261

37' : 11255+1004
SKF2329

43' : 11214+1011
LDS4087

59' : 11278+1020
CVR 612

69' : 11244+1140
GOM 13

74' : 11196+0956
STF1528

76' : 11261+0924
SLW 600

76' : 11189+1014
A 3083

77' : 11289+1011
CRC 18

85' : 11191+0945
OCC 83

91' : 11190+1129
HJ 179

105' : 11169+1026
SLW 585

106' : 11172+0954
SKF1733

107' : 11260+1213
YSC 41AB

107' : 11296+1138
HJ 2572

108' : 11196+1158
LDS4082

109' : 11295+0921
GWP1592

118' : 11191+0858
UC 2115

125' : 11216+1231
FMR 219

128' : 11183+1210
GWP1572

129' : 11302+1200
CVR 616

135' : 11149+1013
HJ 5483

137' : 11163+0915
HDS1606

138' : 11280+0827
J 1014

139' : 11277+1239
LEP 42

146' : 11330+0938
A 2576AB



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.

11239+1032 STF 1536 AB (Tsze tseang)

 
 
11h 23m 55.37s +10° 31' 46.9" P.A. 92.00 sep 2.3 mag 4.06,6.71 Sp F4IV dist. 23.67 pc (77.21 l.y.)
 
 
Coord 2000 11239+1032 Discov num STF1536 Comp AB Coord arcsec 2000 11 23 55.37 +10 31 46.9
Date first 1827 Date last 2021 Obs 555
Pa first 95 Pa last 91.7 P.A. Now (θ) 90.1°
Sep first 3.0 Sep last 2.275 Sep. Now (ρ) 2.284"
Mag pri 4.06 Mag sec 6.71 delta mag (ΔM) 2.65 Spectral class F4IV (yellow-white)
Pri motion ra +153 Sec motion ra +153
Pri motion dec -065 Sec motion dec -065
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
11239+1032 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Tsze tseang 99587 11 23 55 +10 31 47 STF 1536 AB 2021 555 92 2.3 4.06 6.71 2.65 Y <===
Show 99587 11 23 55 +10 31 47 STF 1536 AB,C 2015 7 346 332.1 4.06 11.06 7.00
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Tsze tseang Var name NSV5184 Leo Constellation Leo SAO 99587
HIP 55642 Tycho2 0858-01221-1 Gaia DR2 3915612630249291008 HD 99028
HR 4399 GC 15652 ADS 8148 BD BD+11 2348
Bayer Iota Leonis Bayer name Iot Leo Flamsteed 78 Leonis Flamsteed name 78 Leo
Distance 23.67 Distance ly 77.21 Bayer greek ι Leo
Meaning General seconds
 
 
ORBITAL ELEMENTS
 
 
Period (P)184.4572y± 1.3275 Periastron (T)1948.3626y± 0.2117 Semi-major axis (a)1.91525a± 0.0155
Eccentricity (e)0.53689± 0.00459 Inclination (i)127.642°± 0.598 Longitude of periastron (ω)142.829°± 0.878
Node (Ω)54.376°± 0.846 Notesn ReferenceIzm2019
Equinox Last observation2014 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 111.7 1.700
2001 110.4 1.728
2002 109.2 1.756
2003 108.0 1.783
2004 106.9 1.811
2005 105.8 1.838
2006 104.7 1.865
2007 103.6 1.893
2008 102.6 1.919
2009 101.6 1.946
2010 100.7 1.972
2011 99.7 1.998
2012 98.8 2.024
2013 97.9 2.050
2014 97.1 2.075
2015 96.2 2.100
2016 95.4 2.124
2017 94.6 2.148
2018 93.8 2.172
2019 93.0 2.195
2020 92.3 2.218
2021 91.5 2.241
2022 90.8 2.263
2023 90.1 2.284
2024 89.4 2.306
2025 88.7 2.326
2026 88.0 2.347
2027 87.4 2.366
2028 86.7 2.386
2029 86.1 2.405
2030 85.4 2.423


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds11239%2B1032c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 11239+1032 STF 1536 AB (Tsze tseang) : NOTES
 
 
discov_num notes refcode
STF1536 iot Leo = 78 Leo. Mt. Wilson spectral types F3s and F3s. A is a Delta
Scuti-type variable. A small variation in the early RV's was not
confirmed by fairly numerous subsequent observations. From the visual
separations, Baize suggests a subsystem with P = 16 yr. Baz1980a
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 2.67 +/- 1.45, 2.33, and 1.38 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Baz1980a orb - Baize, P. 1980A&AS...39...83B
Baz1980a A&AS 39, 83, 1980
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019 (Orbital elements from weighted solutions used when available (Table 2),
Izm2019 unweighted elements (Table 1) used for remaining 29 systems.)
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
 
 
DISCOVERER
 
 
idgroup discov author
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
11239+1032 STF1536 AB 2007 508 105 1.9 4.06 6.71 F4IV NOD 112355.37+103146.9
11239+1032 STF1536 AB 2010 525 101 2.0 4.06 6.71 F4IV NOD 112355.37+103146.9
11239+1032 STF1536 AB 2011 532 101 2.0 4.06 6.71 F4IV NOD 112355.37+103146.9
11239+1032 STF1536 AB 2013 534 95 2.1 4.06 6.71 F4IV NOD 112355.37+103146.9
11239+1032 STF1536 AB 2014 538 100 1.9 4.06 6.71 F4IV NOD 112355.37+103146.9
11239+1032 STF1536 AB 2015 540 99 2.0 4.06 6.71 F4IV NO 112355.37+103146.9
11239+1032 STF1536 AB 2016 543 96 2.2 4.06 6.71 F4IV NO 112355.37+103146.9
11239+1032 STF1536 AB 2017 545 97 2.1 4.06 6.71 F4IV NO 112355.37+103146.9
11239+1032 STF1536 AB 2018 549 96 2.2 4.06 6.71 F4IV NO 112355.37+103146.9
11239+1032 STF1536 AB 2019 552 93 2.2 4.06 6.71 F4IV NO 112355.37+103146.9
11239+1032 STF1536 AB 2021 555 92 2.3 4.06 6.71 F4IV NO 112355.37+103146.9

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

 
 
WDS 11239+1032 STF 1536 AB (Tsze tseang) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 11239+1032 STF 1536 AB (Tsze tseang) : MEASURES
 
 
No records found.

 
 
WDS 11239+1032 (Tsze tseang) : VIRTUAL EYEPIECE
 
 

11239+1032 STF1536A mag 4.06 Sp F4IV 11239+1032 STF1536B sep 2.2 P.A. 91.70 mag 6.71 11239+1032 STF1536C sep 331.8 P.A. 346.10 mag 11.06 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 11239+1032 (Tsze tseang) : ALADIN DSS IMAGE @ 11h 23m 55.37s +10° 31' 46.9"
 
 
 
 
WDS 11239+1032 STF 1536 AB (Tsze tseang) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

11239+1032 STF1536AB (Tsze tseang) distance=1' 11239+1032 STF1536AB,C distance=1' 11232+1011 RAO 261 distance=24' 11255+1004 SKF2329 distance=37' 11214+1011 LDS4087 distance=43' 11278+1020 CVR 612 distance=59' 11244+1140 GOM 13 distance=69' 11196+0956 STF1528 distance=74' 11261+0924 SLW 600 distance=76' 11189+1014 A 3083 distance=76' 11289+1011 CRC 18 distance=77' 11191+0945 OCC 83 distance=85' 11190+1129 HJ 179 distance=91' 11169+1026 SLW 585 distance=105' 11172+0954 SKF1733 distance=106' 11260+1213 YSC 41AB distance=107' 11260+1213 GII 174Aa,Ab distance=107' 11296+1138 HJ 2572 distance=107' 11196+1158 LDS4082 distance=108' 11295+0921 GWP1592 distance=109' 11191+0858 UC 2115 distance=118' 11216+1231 FMR 219 distance=125' 11183+1210 GWP1572 distance=128' 11302+1200 CVR 616 distance=129' 11149+1013 HJ 5483 distance=135' 11163+0915 HDS1606 distance=137' 11280+0827 J 1014 distance=138' 11277+1239 LEP 42 distance=139' 11330+0938 J 428CD distance=145' 11330+0938 A 2576AB distance=146' 11330+0938 A 2576AB,C distance=146' 11265+0806 A 2575 distance=152' 11326+1156 UC 2164 distance=154' 11342+1101 YSC 43Aa,Ab distance=154' 11342+1101 HDS1642AB distance=154' 11324+1212 BGH 35 distance=161' 11128+1031 HEI 500 distance=165' 11181+0810 UC 162 distance=166' 11137+1147 RAO 259 distance=169' 11158+0833 GWP1568 distance=170' 11286+0749 CVR 613 distance=177' 11329+0835 GWP1604 distance=178' 11352+1128 HJ 182 distance=178' 11183+0746 HEG 1 distance=186' 11115+1115 DVG 30 distance=188' 11285+0750 WLF 1BC distance=192' 11285+0750 WLF 1AB distance=193' 11285+0750 WLF 1AC distance=193' 11111+1116 DVG 29 distance=195' 11172+0745 HDS1609 distance=195' 11297+0736 BU 9005 distance=196' 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 Tsze tseang 11239+1032 STF1536 AB 92 2.3 1
Show 11239+1032 STF1536 AB,C 346 332.1 1
Show 11232+1011 RAO 261 249 0.8 24
Show 11255+1004 SKF2329 194 7.3 37
Show 11214+1011 LDS4087 56 218.7 43
Show 11278+1020 CVR 612 262 10.1 59
Show 11244+1140 GOM 13 134 234.2 69
Show 11196+0956 STF1528 218 19.3 74
Show 11261+0924 SLW 600 126 9.6 76
Show 11189+1014 A 3083 250 1.7 76
Show 11289+1011 CRC 18 205 14.3 77
Show 11191+0945 OCC 83 -1 0.1 85
Show 11190+1129 HJ 179 301 16.2 91
Show 11169+1026 SLW 585 90 20.3 105
Show 11172+0954 SKF1733 249 1.5 106
Show 11260+1213 YSC 41 AB 280 1.2 107
Show 11260+1213 GII 174 Aa,Ab 84 0.4 107
Show 11296+1138 HJ 2572 171 38.9 107
Show 11196+1158 LDS4082 91 41.3 108
Show 11295+0921 GWP1592 64 49.4 109
Show 11191+0858 UC 2115 58 44.2 118
Show 11216+1231 FMR 219 111 3.6 125
Show 11183+1210 GWP1572 145 26.2 128
Show 11302+1200 CVR 616 145 16.7 129
Show 11149+1013 HJ 5483 242 18.8 135
Show 11163+0915 HDS1606 260 0.5 137
Show 11280+0827 J 1014 14 4.5 138
Show 11277+1239 LEP 42 350 16.9 139
Show 11330+0938 J 428 CD 260 4.0 145
Show 11330+0938 A 2576 AB 260 0.6 146
Show 11330+0938 A 2576 AB,C 237 32.0 146
Show 11265+0806 A 2575 49 0.4 152
Show 11326+1156 UC 2164 10 39.2 154
Show 11342+1101 YSC 43 Aa,Ab 173 0.0 154
Show 11342+1101 HDS1642 AB 246 1.2 154
Show 11324+1212 BGH 35 106 395.5 161
Show 11128+1031 HEI 500 81 1.6 165
Show 11181+0810 UC 162 147 38.1 166
Show 11137+1147 RAO 259 111 0.7 169
Show 11158+0833 GWP1568 115 101.4 170
Show 11286+0749 CVR 613 148 23.7 177
Show 11329+0835 GWP1604 267 46.2 178
Show 11352+1128 HJ 182 263 16.7 178
Show 11183+0746 HEG 1 18 0.5 186
Show 11115+1115 DVG 30 259 46.3 188
Show 11285+0750 WLF 1 BC 276 156.9 192
Show 11285+0750 WLF 1 AB 336 114.7 193
Show 11285+0750 WLF 1 AC 301 236.6 193
Show 11111+1116 DVG 29 166 19.8 195
Show 11172+0745 HDS1609 196 1.0 195
Show 11297+0736 BU 9005 285 18.3 196

 
 
WDS 11239+1032 : COMPONENTS
 
 
  A B
B pa=91.7°
sep=2.24"
 
C pa=346.1°
sep=331.77"
pa=345.8°
sep=332.38"
 
 
11239+1032 A
 
 
Common name Tsze tseang Meaning General seconds Coord arcsec 2000 112355.37+103146.9 Mag 4.06
Spectral class F4IV (yellow-white) PmRA 153.00 PmDE -65.0 SAO 99587
HIP 55642 Tycho2 0858-01221-1 HD 99028 HR 4399
GC 15652 BD BD+11 2348 Bayer Iota Leonis Bayer name Iot Leo
Flamsteed 78 Leonis Flamsteed name 78 Leo
Tycho2
Tycho2 0858-01221-1 Pflag P RAmdeg 170.98108722 DEmdeg 10.52953361
PmRA 152.5 PmDE -65.2 E RAmdeg 4 E DEmdeg 4
E pmRA 2.0 E pmDE 1.9 EpRAm 1991.58 EpDEm 1991.34
Num 4 Q RAmdeg 1.0 Q DEmdeg 1.0 Q pmRA 0.9
Q pmDE 1.1 BTmag 4.484 E BTmag 0.014 VTmag 4.056
E VTmag 0.009 Prox 15 TYC T HIP 55642
CCDM A RAdeg 170.98071806 DEdeg 10.52969667 EpRA 1990 1.64
EpDE 1990 1.40 E RAdeg 3.6 E DEdeg 3.8 Posflg D
Corr 0.2
SAO
SAO 99587 DelFlag RA1950 PmRA1950 0.0113
DE1950 PmDE1950 -0.079 Vmag 4 SpType F5
Double code Source 71 CatNum 430 DM BD+11 2348
DMcomp BDsup HD 99028 M HD 0
GC 15652 RA1950rad 2.9728142 DE1950rad 0.18858069 PmRA2000 0.0114
PmDE2000 -0.075
Hipparcos
Catalog H HIP 55642 Proxy H RAhms 11 23 55.37
DEdms +10 31 46.9 Vmag 4 VarFlag R Vmag G
RAdeg 170.981 DEdeg 10.5297 AstroRef A Plx 41.26
CCDM 11239+1032 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 124 Rho 1.492 HD 99028 BD BD+11 2348
CD CP Dm number +11 2348 VIred 0.47
SpType F2IV SB R SpType Coord arcsec 2000 112355.37+103146.9
Hipparcos 2
HIP 55642 Sn 15 So 3 Nc 2
RArad 2.9841762309 DErad 0.1837778952 Plx 42.24 PmRA 141.45
PmDE -79.14 E RArad 0.76 E DErad 0.57 E Plx 0.83
E pmRA 0.94 E pmDE 0.62 Hpmag 4.0331 E Hpmag 0.0006
SHp 0.006 VA 0 BV 0.423 E BV 0.015
VI 0.47
CCDM
Ccdm 11239+1032 RComp Comp A Note1
Note2 @ Discov num DRAs 1.57 DDEs -14.3
R dRAs 10 Year Theta Rho
Obs 2 Vmag 4.1 Sp F5 PmNote *
PmRA 181 PmDE -70 Dm number +11 2348 Cat1 BD
Name2 99587 Cat2 SAO HD 99028 M HD
ADS BDS A 8148 M ADS BDS N IDS IDS 11187N1105A
HIC 55642
 
 
11239+1032 B
 
 
Coord arcsec 2000 112355.52+103146.8 Mag 6.71 PmRA 153.00 PmDE -65.0
Tycho2 0858-01221-2 Calc delta mag 2.65 Calc coord yes
Tycho2
Tycho2 0858-01221-2 Pflag P RAmdeg 170.98108722 DEmdeg 10.52953361
PmRA 152.5 PmDE -65.2 E RAmdeg 4 E DEmdeg 4
E pmRA 2.0 E pmDE 1.9 EpRAm 1991.58 EpDEm 1991.34
Num 4 Q RAmdeg 1.0 Q DEmdeg 1.0 Q pmRA 0.9
Q pmDE 1.1 BTmag 7.624 E BTmag 0.017 VTmag 6.708
E VTmag 0.011 Prox 15 TYC HIP 55642
CCDM B RAdeg 170.98104083 DEdeg 10.52944028 EpRA 1990 1.58
EpDE 1990 1.44 E RAdeg 5.6 E DEdeg 6.2 Posflg D
Corr 0.1
CCDM
Ccdm 11239+1032 RComp Comp B Note1 *
Note2 Discov num STF1536 DRAs DDEs
R dRAs Year 1832 Theta Rho
Obs 99 Vmag 7.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 8148 M ADS BDS N N IDS IDS 11187N1105B
HIC 55642
 
 
11239+1032 C
 
 
Coord arcsec 2000 112349.98+103709.0 Mag 11.06 PmRA 159.00 PmDE -66.0
Tycho2 0858-00720-1 Calc delta mag 7 Calc coord yes
Tycho2
Tycho2 0858-00720-1 Pflag RAmdeg 170.95807006 DEmdeg 10.61885850
PmRA 158.5 PmDE -65.2 E RAmdeg 73 E DEmdeg 84
E pmRA 2.1 E pmDE 2.2 EpRAm 1971.67 EpDEm 1963.02
Num 4 Q RAmdeg 0.1 Q DEmdeg 1.6 Q pmRA 0.1
Q pmDE 1.6 BTmag 12.669 E BTmag 0.363 VTmag 11.056
E VTmag 0.116 Prox 999 TYC HIP
CCDM RAdeg 170.95769639 DEdeg 10.61901333 EpRA 1990 1.66
EpDE 1990 1.39 E RAdeg 84.1 E DEdeg 103.9 Posflg
Corr 0.0