18224+4545 A   700

 
 
18h 22m 24.41s +45 44' 37.8" P.A. 179.4 sep 0.07 mag 10.36,10.45 Sp G0
 
 
Coord 2000
18224+4545
Discov num
A   700
Comp
Coord arcsec 2000
18 22 24.41 +45 44 37.8
Date first
1904
Date last
1996
Obs
10
Pa first
322
Pa last
128
P.A. Now (θ)
179.4°
Sep first
0.5
Sep last
0.3
Sep. Now (ρ)
0.07"
Mag pri
10.36
Mag sec
10.45
delta mag (ΔM)
0.09
Spectral class
G0 (yellow)
Pri motion ra
+024
Sec motion ra
+024
Pri motion dec
-030
Sec motion dec
-030
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
128.3
Precise sep
0.32
Constellation
Lyra
SAO
47431
Tycho2
3525-01109-1
ADS
11305
last precise pa
127.8
last precise sep
0.623
 
 
ORBITAL ELEMENTS
 
 
Period (P)234y Periastron (T)2006y Semi-major axis (a)0.55a
Eccentricity (e)0.41 Inclination (i)81° Longitude of periastron (ω)41°
Node (Ω)127.3° Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation
label rho theta
2000 0.318 130.1
2001 0.309 130.8
2002 0.298 131.5
2003 0.287 132.2
2004 0.274 133.1
2005 0.261 134.0
2006 0.247 135.0
2007 0.232 136.2
2008 0.217 137.5
2009 0.201 139.0
2010 0.184 140.8
2011 0.167 143.0
2012 0.149 145.7
2013 0.132 149.0
2014 0.115 153.4
2015 0.098 159.4
2016 0.082 167.6
2017 0.069 179.4
2018 0.060 195.7
2019 0.056 215.8
2020 0.060 235.8
2021 0.070 251.8
2022 0.084 263.2
2023 0.099 271.3
2024 0.116 277.0
2025 0.134 281.3
2026 0.152 284.6
2027 0.170 287.1
2028 0.188 289.2
2029 0.205 290.9
2030 0.223 292.4

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

grafico orbita





wds18224%2B4545a.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
18224+4545 A 700 1996 10 128 0.3 10.36 10.45 G0 NO 182224.41+454437.8

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