20329+1357 L    35CD

 
 
20h 32m 53.06s +13 58' 09.1" P.A. 138.1 sep 0.49 mag 10.60,10.92 Sp K0 dist. 72.78 pc (237.41 l.y.)
 
 
Coord 2000
20329+1357
Discov num
L    35
Comp
CD
Coord arcsec 2000
20 32 53.06 +13 58 09.1
Date first
1900
Date last
2016
Obs
59
Pa first
143
Pa last
143
P.A. Now (θ)
138.1°
Sep first
0.3
Sep last
0.6
Sep. Now (ρ)
0.49"
Mag pri
10.60
Mag sec
10.92
delta mag (ΔM)
0.32
Spectral class
K0 (yellow-orange)
Pri motion ra
-077
Sec motion ra
Pri motion dec
+141
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
20329+1357 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20329+1357 BU 670 AB 1877 2016 89 5 0.8 9.44 9.87 0.43
Show 20329+1357 A 3108 AB,CD 1897 2016 15 340 98.4 9.12 10.02 0.90
Show 20329+1357 L 35 CD 1900 2016 59 138 0.5 10.60 10.92 0.32 Y <===
Quadruple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
142.5
Precise sep
0.6
Constellation
Delphinus
SAO
106221
HIP
101390
Tycho2
1099-01004-1
Gaia DR2
84949038976
ADS
13987
BD
BD+13 4434
Distance
72.78
Distance ly
237.41
last precise pa
142.5
last precise sep
0.6
 
 
ORBITAL ELEMENTS
 
 
Period (P)117.92y Periastron (T)1974.32y Semi-major axis (a)0.426a
Eccentricity (e)0.198 Inclination (i)166° Longitude of periastron (ω)6.6°
Node (Ω)294.9° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.414 186.6
2001 0.419 183.6
2002 0.424 180.6
2003 0.428 177.7
2004 0.433 174.9
2005 0.438 172.1
2006 0.442 169.4
2007 0.447 166.7
2008 0.451 164.1
2009 0.456 161.5
2010 0.460 159.0
2011 0.464 156.6
2012 0.468 154.1
2013 0.472 151.7
2014 0.475 149.4
2015 0.479 147.1
2016 0.482 144.8
2017 0.485 142.5
2018 0.488 140.3
2019 0.491 138.1
2020 0.494 135.9
2021 0.496 133.8
2022 0.499 131.7
2023 0.501 129.6
2024 0.502 127.5
2025 0.504 125.4
2026 0.506 123.3
2027 0.507 121.3
2028 0.508 119.2
2029 0.509 117.2
2030 0.509 115.1

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






wds20329%2B1357b.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+1357 L 35 CD 1994 56 208 0.3 10.60 10.92 K0 NOD 203253.06+135809.1
20329+1357 L 35 CD 2007 57 164 0.5 10.60 10.92 K0 NOD 203253.06+135809.1
20329+1357 L 35 CD 2009 58 160 0.5 10.60 10.92 K0 NOD 203253.06+135809.1
20329+1357 L 35 CD 2016 59 143 0.6 10.60 10.92 K0 NO 203253.06+135809.1

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