18537-0533 A    93

 
 
18h 53m 41.82s -05 32' 38.1" P.A. 149.8 sep 1.04 mag 9.16,10.15 Sp G5 dist. 76.98 pc (251.11 l.y.)
 
 
Coord 2000
18537-0533
Discov num
A    93
Comp
Coord arcsec 2000
18 53 41.82 -05 32 38.1
Date first
1900
Date last
2015
Obs
55
Pa first
325
Pa last
156
P.A. Now (θ)
149.8°
Sep first
0.3
Sep last
1.0
Sep. Now (ρ)
1.04"
Mag pri
9.16
Mag sec
10.15
delta mag (ΔM)
0.99
Spectral class
G5 (yellow)
Pri motion ra
-024
Sec motion ra
-024
Pri motion dec
-033
Sec motion dec
-033
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
155.8
Precise sep
1.043
Constellation
Scutum
HIP
92726
Tycho2
5123-00107-1
HD
175039
ADS
11791
Distance
76.98
Distance ly
251.11
last precise pa
155.8
last precise sep
1.043
 
 
ORBITAL ELEMENTS
 
 
Period (P)549y± 192 Periastron (T)1911.6y± 3.6 Semi-major axis (a)1.03a± 0.16
Eccentricity (e)0.702± 0.047 Inclination (i)42.9°± 6.7 Longitude of periastron (ω)338°± 10
Node (Ω)17°± 10 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.901 142.9
2001 0.909 143.3
2002 0.917 143.7
2003 0.925 144.2
2004 0.932 144.6
2005 0.940 145.0
2006 0.948 145.4
2007 0.955 145.8
2008 0.963 146.2
2009 0.970 146.6
2010 0.978 147.0
2011 0.985 147.4
2012 0.993 147.7
2013 1.000 148.1
2014 1.007 148.5
2015 1.014 148.8
2016 1.022 149.2
2017 1.029 149.5
2018 1.036 149.8
2019 1.043 150.2
2020 1.050 150.5
2021 1.057 150.8
2022 1.064 151.2
2023 1.071 151.5
2024 1.078 151.8
2025 1.085 152.1
2026 1.092 152.4
2027 1.099 152.7
2028 1.105 153.0
2029 1.112 153.3
2030 1.119 153.6

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

grafico orbita





wds18537-0533e.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
18537-0533 A 93 2004 53 153 0.9 9.16 10.15 G5 NOD 185341.82-053238.1
18537-0533 A 93 2009 54 153 1.0 9.16 10.15 G5 NOD 185341.82-053238.1
18537-0533 A 93 2015 55 156 1.0 9.16 10.15 G5 NO 185341.82-053238.1

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