20329+1142 J     1AB

 
 
20h 32m 52.76s +11 44' 37.2" P.A. 55.5 sep 2.12 mag 10.04,10.57
 
 
Coord 2000
20329+1142
Discov num
J     1
Comp
AB
Coord arcsec 2000
20 32 52.76 +11 44 37.2
Date first
1909
Date last
2018
Obs
35
Pa first
38
Pa last
58
P.A. Now (θ)
55.5°
Sep first
0.9
Sep last
1.9
Sep. Now (ρ)
2.12"
Mag pri
10.04
Mag sec
10.57
delta mag (ΔM)
0.53
Spectral class
Pri motion ra
-054
Sec motion ra
-054
Pri motion dec
-021
Sec motion dec
-022
Notes
O (Orbital solution)
rPM=0.017 (< 0.3, Physical double)
This double is physical.
 
 
20329+1142 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20329+1142 J 1 AB 1909 2018 35 56 2.1 10.04 10.57 0.53 Y <===
Show 20329+1142 UC 4212 AC 2000 2015 3 255 28.8 10.04 15.30 5.26
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
58.2
Precise sep
1.913
Constellation
Delphinus
Tycho2
1095-00816-1
Gaia DR2
20997391744
ADS
13983
last precise pa
58.2
last precise sep
1.913
 
 
ORBITAL ELEMENTS
 
 
Period (P)528.391y± 34.998 Periastron (T)2396.217y± 5.49 Semi-major axis (a)1.5446a± 0.1719
Eccentricity (e)0.745± 0.1554 Inclination (i)58.5°± 3.4 Longitude of periastron (ω)228.4°± 10.4
Node (Ω)38.8°± 5.3 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation1991
label rho theta
2000 2.046 53.0
2001 2.051 53.2
2002 2.055 53.3
2003 2.060 53.4
2004 2.064 53.6
2005 2.068 53.7
2006 2.073 53.8
2007 2.077 54.0
2008 2.081 54.1
2009 2.085 54.2
2010 2.088 54.4
2011 2.092 54.5
2012 2.096 54.6
2013 2.099 54.7
2014 2.103 54.9
2015 2.106 55.0
2016 2.110 55.1
2017 2.113 55.3
2018 2.116 55.4
2019 2.119 55.5
2020 2.122 55.6
2021 2.125 55.8
2022 2.128 55.9
2023 2.131 56.0
2024 2.134 56.1
2025 2.137 56.3
2026 2.139 56.4
2027 2.142 56.5
2028 2.144 56.6
2029 2.147 56.8
2030 2.149 56.9

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






wds20329%2B1142a.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
20329+1142 J 1 AB 2010 32 57 2.0 10.04 10.57 O 203252.76+114437.2
20329+1142 J 1 AB 2015 33 57 2.1 10.04 10.57 O 203252.76+114437.2
20329+1142 J 1 AB 2018 35 58 1.9 10.04 10.57 O 203252.76+114437.2

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