18439-0649 YSC 133

 
 
18H 43M 51.22S -06 49' 04.8" P.A. 110.8 SEP 0.06 MAG 6.70,7.60 SP F7V DIST. 73.8 PC (240.74 L.Y.)
 
 
Coord 2000
18439-0649
Discov num
YSC 133
Comp
Coord arcsec 2000
18 43 51.22 -06 49 04.8
Date first
2008
Date last
2015
Obs
10
Pa first
171
Pa last
169
P.A. Now (θ)
110.8°
Sep first
0.0
Sep last
0.0
Sep. Now (ρ)
0.06"
Mag pri
6.70
Mag sec
7.60
delta mag (ΔM)
0.9
Spectral class
F7V (yellow-white)
Pri motion ra
+030
Sec motion ra
Pri motion dec
-045
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Scutum
SAO
142557
HIP
91880
Tycho2
5125-00544-1
HD
173093
HR
7034
BD
BD-06 4859
Distance
73.8
Distance ly
240.74
last precise pa
169.4
last precise sep
0.034
 
 
ORBITAL ELEMENTS
 
 
Period (P)13.52y± 2.6 Periastron (T)2002.36y± 4.77 Semi-major axis (a)0.0787a± 0.0117
Eccentricity (e)0.124± 0.023 Inclination (i)112.1°± 3.2 Longitude of periastron (ω)290.2°± 77.4
Node (Ω)97.6°± 2.4 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.064 263.4
2001 0.039 239.4
2002 0.027 167.5
2003 0.050 120.2
2004 0.070 103.4
2005 0.074 92.1
2006 0.064 79.6
2007 0.046 59.2
2008 0.033 16.6
2009 0.042 327.3
2010 0.061 302.8
2011 0.076 289.7
2012 0.082 280.0
2013 0.074 270.1
2014 0.053 254.8
2015 0.029 212.3
2016 0.037 137.4
2017 0.062 110.8
2018 0.074 97.8
2019 0.071 86.5
2020 0.056 71.5
2021 0.038 42.5
2022 0.035 350.1
2023 0.051 313.2
2024 0.069 295.7
2025 0.080 284.9
2026 0.080 275.5
2027 0.065 264.0
2028 0.040 241.0
2029 0.027 170.9
2030 0.049 121.2

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