11137+2008 STF1517AB

 
 
11H 13M 40.99S +20 07' 43.3" P.A. 315.8 SEP 0.71 MAG 7.54,8.02 SP G5V DIST. 54.5 PC (177.78 L.Y.)
 
 
Coord 2000
11137+2008
Discov num
STF1517
Comp
AB
Coord arcsec 2000
11 13 40.99 +20 07 43.3
Date first
1829
Date last
2015
Obs
221
Pa first
288
Pa last
316
P.A. Now (θ)
315.8°
Sep first
1.1
Sep last
0.7
Sep. Now (ρ)
0.71"
Mag pri
7.54
Mag sec
8.02
delta mag (ΔM)
0.48
Spectral class
G5V (yellow)
Pri motion ra
-388
Sec motion ra
-388
Pri motion dec
-123
Sec motion dec
-125
Notes
N O (See Notes, Orbital solution)
rPM=0.005 (< 0.3, Physical double)
This double is physical.
 
 
11137+2008 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 81725 11137+2008 STF1517 AB 1829 2015 221 316 0.7 7.54 8.02 0.48 Y <===
Show 81725 11137+2008 BU 1431 AB,C 1871 2015 13 97 246.1 7.54 10.83 3.29
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Leo
SAO
81725
HIP
54844
Tycho2
1439-01487-1
HD
97561
ADS
8094
BD
BD+20 2572
Distance
54.5
Distance ly
177.78
last precise pa
315.7
last precise sep
0.71
 
 
ORBITAL ELEMENTS
 
 
Period (P)924y Periastron (T)1393.49y Semi-major axis (a)2.278a
Eccentricity (e)0.489 Inclination (i)93.6° Longitude of periastron (ω)256.5°
Node (Ω)120.4° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2011
label rho theta
2000 0.569 320.4
2001 0.578 320.1
2002 0.586 319.7
2003 0.595 319.4
2004 0.603 319.1
2005 0.611 318.8
2006 0.620 318.5
2007 0.628 318.2
2008 0.637 318.0
2009 0.645 317.7
2010 0.654 317.4
2011 0.662 317.2
2012 0.671 316.9
2013 0.679 316.7
2014 0.688 316.4
2015 0.696 316.2
2016 0.704 316.0
2017 0.713 315.8
2018 0.721 315.5
2019 0.730 315.3
2020 0.738 315.1
2021 0.747 314.9
2022 0.755 314.7
2023 0.764 314.5
2024 0.772 314.4
2025 0.780 314.2
2026 0.789 314.0
2027 0.797 313.8
2028 0.806 313.6
2029 0.814 313.5
2030 0.822 313.3

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic