10200+1950 STF1424AB (Algieba)

 
 
10H 19M 58.35S +19 50' 29.4" P.A. 127.1 SEP 4.74 MAG 2.37,3.64 SP K0III DIST. 39.89 PC (130.12 L.Y.)
 
 
Coord 2000
10200+1950
Discov num
STF1424
Comp
AB
Coord arcsec 2000
10 19 58.35 +19 50 29.4
Date first
1820
Date last
2015
Obs
839
Pa first
99
Pa last
127
P.A. Now (θ)
127.1°
Sep first
3.7
Sep last
4.7
Sep. Now (ρ)
4.74"
Mag pri
2.37
Mag sec
3.64
delta mag (ΔM)
1.27
Spectral class
K0III (yellow-orange)
Pri motion ra
+311
Sec motion ra
+306
Pri motion dec
-153
Sec motion dec
-161
Notes
N O (See Notes, Orbital solution)
rPM=0.03 (< 0.3, Physical double)
 
 
10200+1950 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Algieba 81298 10200+1950 STF1424 AB 1820 2015 839 127 4.7 2.37 3.64 1.27 Y <===
Show 81298 10200+1950 STF1424 AC 1851 2012 30 288 336.0 2.37 9.64 7.27
Show 81298 10200+1950 STF1424 AD 1904 2015 14 302 371.0 2.37 10.62 8.25
Show 81298 10200+1950 STF1424 BC 1877 1998 9 288 327.4 3.64 9.64 6.00
Show 81292 10200+1950 BAG 32 Ca,Cb 1981 1983 3 307 0.1 9.64 Y
Show 81292 10200+1950 STF1424 CD 1852 2014 29 5 90.5 9.64 10.62 0.98
Show 81292 10200+1950 FYM 38 CE 1998 2012 3 59 148.6 9.64 12.95 3.31
Show 81292 10200+1950 FYM 38 CF 1998 2012 3 238 53.4 9.64 14.10 4.46
Septuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name
Algieba
Other names
Algeiba
Constellation
Leo
SAO
81298
HIP
50583
Tycho2
1423-01349-1
HD
89484
HR
4057
GC
14177
ADS
7724
BD
BD+20 2467
Bayer
Gamma 1 Leonis
Bayer name
Gam1 Leo
Flamsteed
41 Leonis
Flamsteed name
41 Leo
Distance
39.89
Distance ly
130.12
last precise pa
127
last precise sep
4.69
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
Period (P)554y± 27 Periastron (T)1750y± 16 Semi-major axis (a)3.1a± 0.1
Eccentricity (e)0.9± 0.03 Inclination (i)49°± 6 Longitude of periastron (ω)309°± 6
Node (Ω)347°± 9 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 4.666 125.8
2001 4.671 125.9
2002 4.676 126.0
2003 4.681 126.1
2004 4.686 126.2
2005 4.690 126.2
2006 4.695 126.3
2007 4.699 126.4
2008 4.703 126.5
2009 4.708 126.6
2010 4.712 126.6
2011 4.716 126.7
2012 4.720 126.8
2013 4.724 126.9
2014 4.728 127.0
2015 4.731 127.0
2016 4.735 127.1
2017 4.739 127.2
2018 4.742 127.3
2019 4.746 127.4
2020 4.749 127.4
2021 4.752 127.5
2022 4.756 127.6
2023 4.759 127.7
2024 4.762 127.8
2025 4.765 127.8
2026 4.768 127.9
2027 4.771 128.0
2028 4.773 128.1
2029 4.776 128.1
2030 4.778 128.2

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

grafico orbita





grafico misure orbit6
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
Period (P)554y± 27 Periastron (T)1769y± 13 Semi-major axis (a)3.1a± 0.1
Eccentricity (e)0.93± 0.02 Inclination (i)41°± 5 Longitude of periastron (ω)114°± 10
Node (Ω)188°± 14 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 4.646 125.0
2001 4.651 125.1
2002 4.656 125.1
2003 4.660 125.2
2004 4.665 125.3
2005 4.670 125.4
2006 4.674 125.5
2007 4.678 125.5
2008 4.683 125.6
2009 4.687 125.7
2010 4.691 125.8
2011 4.695 125.9
2012 4.699 125.9
2013 4.703 126.0
2014 4.707 126.1
2015 4.711 126.2
2016 4.714 126.2
2017 4.718 126.3
2018 4.722 126.4
2019 4.725 126.5
2020 4.728 126.6
2021 4.732 126.6
2022 4.735 126.7
2023 4.738 126.8
2024 4.741 126.9
2025 4.744 126.9
2026 4.747 127.0
2027 4.750 127.1
2028 4.753 127.2
2029 4.755 127.2
2030 4.758 127.3

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

grafico orbita





grafico misure orbit6