20298+0941 JNN 282AC

 
 
20h 29m 48.41s +09 41' 19.3" P.A. 89 sep 0.2 mag 13.05,16.00 Sp M4.5
 
 
Coord 2000
20298+0941
Discov num
JNN 282
Comp
AC
Coord arcsec 2000
20 29 48.41 +09 41 19.3
Date first
1996
Date last
2012
Obs
6
Pa first
89
Pa last
89
P.A. Now (θ)
89°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
13.05
Mag sec
16.00
delta mag (ΔM)
2.95
Spectral class
M4.5 (red)
Pri motion ra
+704
Sec motion ra
Pri motion dec
+092
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
20298+0941 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20298+0941 AST 2 AB 1995 1997 14 212 0.0 13.11 16.38 3.27 Y
Show 20298+0941 JNN 282 AC 1996 2012 6 89 0.2 13.05 16.00 2.95 Y <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
89.1
Precise sep
0.16
Cdsa2 id
JNN 282 AC
Constellation
Delphinus
Ra deg
20.496780555555556
De deg
9.688694444444444
last precise pa
89.1
last precise sep
0.16
 
 
ORBITAL ELEMENTS
 
 
Period (P)538.6d± 0.1 Periastron (T)51022.7d (1998.571y)± 0.9 Semi-major axis (a)0.1037a± 0.0005
Eccentricity (e)0.558± 0.005 Inclination (i)145.4°± 0.6 Longitude of periastron (ω)12.2°± 1.5
Node (Ω)102.2°± 1.1 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000-01-01 0.049 129.2
2001-01-01 0.145 255.8
2002-01-01 0.146 291.0
2003-01-01 0.045 87.7
2004-01-01 0.137 251.2
2005-01-01 0.152 287.0
2006-01-01 0.046 42.4
2007-01-01 0.129 246.1
2008-01-01 0.156 283.1
2009-01-01 0.055 5.4
2010-01-01 0.119 240.1
2011-01-01 0.159 279.5
2012-01-01 0.070 341.9
2013-01-01 0.108 233.0
2014-01-01 0.160 275.9
2015-01-01 0.086 327.0
2016-01-01 0.095 224.2
2017-01-01 0.160 272.4
2018-01-01 0.101 316.7
2019-01-01 0.082 212.6
2020-01-01 0.159 268.8
2021-01-01 0.115 308.8
2022-01-01 0.070 196.8
2023-01-01 0.156 265.2
2024-01-01 0.126 302.6
2025-01-01 0.058 174.1
2026-01-01 0.152 261.4
2027-01-01 0.136 297.2
2028-01-01 0.050 142.5
2029-01-01 0.147 257.3
2030-01-01 0.144 292.6

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

grafico orbita





wds20298%2B0941b.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
20298+0941 JNN 282 AC 2012 1 89 0.2 13.05 16.00 M4.5 N 202948.41+094119.3

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