11190+1416 STF1527

 
 
11H 18M 59.91S +14 16' 06.9" P.A. 273.4 SEP 0.33 MAG 7.01,7.99 SP F9V DIST. 30.74 PC (100.27 L.Y.)
 
 
Coord 2000
11190+1416
Discov num
STF1527
Comp
Coord arcsec 2000
11 18 59.91 +14 16 06.9
Date first
1822
Date last
2014
Obs
271
Pa first
10
Pa last
237
P.A. Now (θ)
273.4°
Sep first
3.7
Sep last
0.3
Sep. Now (ρ)
0.33"
Mag pri
7.01
Mag sec
7.99
delta mag (ΔM)
0.98
Spectral class
F9V (yellow-white)
Pri motion ra
+054
Sec motion ra
+054
Pri motion dec
-161
Sec motion dec
-161
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Leo
SAO
99551
HIP
55254
Tycho2
0861-00454-1
HD
98354
ADS
8128
BD
BD+15 2321
Distance
30.74
Distance ly
100.27
last precise pa
237.2
last precise sep
0.286
 
 
ORBITAL ELEMENTS
 
 
Period (P)415y± 15.9 Periastron (T)2010.503y± 0.042 Semi-major axis (a)2.225a± 0.045
Eccentricity (e)0.8511± 0.0033 Inclination (i)55.6°± 0.5 Longitude of periastron (ω)0.5°± 0.59
Node (Ω)188°± 0.5 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2012
label rho theta
2000 0.487 71.8
2001 0.442 77.7
2002 0.400 84.9
2003 0.363 93.7
2004 0.333 104.3
2005 0.312 116.7
2006 0.302 130.3
2007 0.303 144.3
2008 0.311 157.9
2009 0.323 170.5
2010 0.330 182.4
2011 0.330 194.1
2012 0.321 206.1
2013 0.309 218.9
2014 0.299 232.8
2015 0.299 247.1
2016 0.310 260.9
2017 0.332 273.4
2018 0.363 284.0
2019 0.402 292.7
2020 0.445 299.9
2021 0.491 305.7
2022 0.538 310.5
2023 0.587 314.6
2024 0.636 318.0
2025 0.686 320.9
2026 0.735 323.4
2027 0.784 325.6
2028 0.832 327.6
2029 0.880 329.3
2030 0.927 330.9

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