19471-0809 A   108

 
 
19h 47m 08.04s -08 09' 09.9" P.A. 108.3 sep 0.32 mag 8.74,9.24 Sp K0 dist. 171.82 pc (560.48 l.y.)
 
 
Coord 2000
19471-0809
Discov num
A   108
Comp
Coord arcsec 2000
19 47 08.04 -08 09 09.9
Date first
1900
Date last
2009
Obs
41
Pa first
183
Pa last
100
P.A. Now (θ)
108.3°
Sep first
0.3
Sep last
0.3
Sep. Now (ρ)
0.32"
Mag pri
8.74
Mag sec
9.24
delta mag (ΔM)
0.5
Spectral class
K0 (yellow-orange)
Pri motion ra
+003
Sec motion ra
Pri motion dec
-024
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
100
Precise sep
0.3
Cdsa2 id
A 108
Constellation
Aquila
HIP
97350
HD
186847
ADS
12911
Ra deg
19.785566666666668
De deg
-8.152750000000001
Distance
171.82
Distance ly
560.48
last precise pa
100
last precise sep
0.3
 
 
ORBITAL ELEMENTS
 
 
Period (P)242.85y Periastron (T)1946.34y Semi-major axis (a)0.299a
Eccentricity (e)0.717 Inclination (i)51.4° Longitude of periastron (ω)265°
Node (Ω)53.8° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.298 97.3
2001 0.300 98.0
2002 0.301 98.6
2003 0.302 99.3
2004 0.303 99.9
2005 0.305 100.5
2006 0.306 101.1
2007 0.307 101.7
2008 0.308 102.4
2009 0.309 103.0
2010 0.310 103.6
2011 0.310 104.2
2012 0.311 104.8
2013 0.312 105.4
2014 0.313 105.9
2015 0.314 106.5
2016 0.314 107.1
2017 0.315 107.7
2018 0.316 108.3
2019 0.316 108.9
2020 0.317 109.4
2021 0.318 110.0
2022 0.318 110.6
2023 0.319 111.1
2024 0.319 111.7
2025 0.320 112.3
2026 0.320 112.8
2027 0.321 113.4
2028 0.321 114.0
2029 0.321 114.5
2030 0.322 115.1

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

grafico orbita





wds19471-0809e.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
19471-0809 A 108 1996 38 98 0.3 8.74 9.24 K0 NO 194708.04-080909.9
19471-0809 A 108 2008 40 101 0.3 8.74 9.24 K0 NO 194708.04-080909.9
19471-0809 A 108 2009 41 100 0.3 8.74 9.24 K0 NO 194708.04-080909.9

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