18465-0058 MCA  53Aa,Ab

 
 
18H 46M 28.58S -00 57' 41.9" P.A. 28.5 SEP 0.08 MAG 5.88,6.80 SP A2V DIST. 111.86 PC (364.89 L.Y.)
 
 
Coord 2000
18465-0058
Discov num
MCA  53
Comp
Aa,Ab
Coord arcsec 2000
18 46 28.58 -00 57 41.9
Date first
1980
Date last
2014
Obs
8
Pa first
8
Pa last
95
P.A. Now (θ)
28.5°
Sep first
0.1
Sep last
0.0
Sep. Now (ρ)
0.08"
Mag pri
5.88
Mag sec
6.80
delta mag (ΔM)
0.92
Spectral class
A2V (white)
Pri motion ra
+023
Sec motion ra
Pri motion dec
-023
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
18465-0058 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 142606 18465-0058 MCA 53 Aa,Ab 1980 2014 8 28 0.1 5.88 6.80 0.92 Y <===
Show 5 Aql 142606 18465-0058 STF2379 AB 1796 2016 110 121 12.7 5.88 7.02 1.14
Show 18465-0058 STF2379 AC 1838 2016 15 147 23.4 5.88 11.30 5.42
Show 18465-0058 STF2379 BC 1838 2000 13 171 13.9 7.02 11.30 4.28
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Aquila
SAO
142606
HIP
92117
HD
173654
HR
7059
GC
25713
ADS
11667
Flamsteed
5 Aquilae
Flamsteed name
5 Aql
Distance
111.86
Distance ly
364.89
last precise pa
95.3
last precise sep
0.027
 
 
ORBITAL ELEMENTS
 
 
Period (P)42.48y± 2.2 Periastron (T)2012.42y± 1.12 Semi-major axis (a)0.102a± 0.008
Eccentricity (e)0.665± 0.057 Inclination (i)131.1°± 11.3 Longitude of periastron (ω)355.5°± 39
Node (Ω)163.7°± 21.8 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.144 332.0
2001 0.138 329.8
2002 0.130 327.4
2003 0.122 324.7
2004 0.112 321.5
2005 0.102 317.8
2006 0.091 313.1
2007 0.078 307.0
2008 0.065 298.4
2009 0.051 285.3
2010 0.038 262.8
2011 0.032 225.5
2012 0.033 182.7
2013 0.034 145.3
2014 0.034 107.1
2015 0.039 73.6
2016 0.050 51.5
2017 0.063 37.7
2018 0.075 28.5
2019 0.087 21.8
2020 0.098 16.8
2021 0.108 12.7
2022 0.118 9.3
2023 0.126 6.4
2024 0.134 3.8
2025 0.141 1.5
2026 0.147 359.4
2027 0.152 357.5
2028 0.157 355.7
2029 0.161 354.0
2030 0.164 352.3

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