11239+1032 STF1536AB (Tsze tseang)

 
 
11h 23m 55.37s +10 31' 46.9" P.A. 92.7 sep 2.2 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
2018
Obs
550
Pa first
95
Pa last
96
P.A. Now (θ)
92.7°
Sep first
3.0
Sep last
2.2
Sep. Now (ρ)
2.2"
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Tsze tseang 99587 11239+1032 STF1536 AB 1827 2018 550 93 2.2 4.06 6.71 2.65 Y <===
Show 11239+1032 STF1536 AB,C 1910 2000 6 346 331.3 4.06 11.06 7.00
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
96.1
Precise sep
2.19
Common name
Tsze tseang
Meaning
General seconds
Constellation
Leo
SAO
99587
HIP
55642
Tycho2
0858-01221-1
Gaia DR2
30249291008
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
last precise pa
96.1
last precise sep
2.19
 
 
ORBITAL ELEMENTS
 
 
Period (P)186y Periastron (T)1948.8y Semi-major axis (a)1.91a
Eccentricity (e)0.53 Inclination (i)128° Longitude of periastron (ω)325°
Node (Ω)235° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 1.697 111.3
2001 1.725 110.1
2002 1.753 108.9
2003 1.781 107.7
2004 1.809 106.5
2005 1.837 105.4
2006 1.865 104.3
2007 1.892 103.3
2008 1.920 102.3
2009 1.947 101.3
2010 1.973 100.3
2011 2.000 99.4
2012 2.026 98.5
2013 2.052 97.6
2014 2.077 96.7
2015 2.102 95.9
2016 2.127 95.1
2017 2.152 94.3
2018 2.175 93.5
2019 2.199 92.7
2020 2.222 92.0
2021 2.245 91.2
2022 2.267 90.5
2023 2.289 89.8
2024 2.311 89.1
2025 2.332 88.4
2026 2.352 87.7
2027 2.372 87.1
2028 2.392 86.4
2029 2.411 85.8
2030 2.429 85.2

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






wds11239%2B1032a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
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

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