20583+4428 RBR  50

 
 
20h 58m 19.38s +44 28' 17.5" P.A. 76 sep 0.4 mag 5.50,11.00 Sp K0III dist. 79.3 pc (258.68 l.y.)
 
 
Coord 2000
20583+4428
Discov num
RBR  50
Comp
Coord arcsec 2000
20 58 19.38 +44 28 17.5
Date first
2003
Date last
2003
Obs
1
Pa first
76
Pa last
76
P.A. Now (θ)
76°
Sep first
0.4
Sep last
0.4
Sep. Now (ρ)
0.4"
Mag pri
5.50
Mag sec
11.00
delta mag (ΔM)
5.5
Spectral class
K0III (yellow-orange)
Pri motion ra
+102
Sec motion ra
Pri motion dec
+070
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
75.6
Precise sep
0.41
Constellation
Cygnus
SAO
50298
HIP
103519
HD
199870
HR
8035
Distance
79.3
Distance ly
258.68
last precise pa
75.6
last precise sep
0.41
 
 
ORBITAL ELEMENTS
 
 
Period (P)635.1d Periastron (T)39186.1d (1966.164y) Semi-major axis (a)7.48m± 0.64
Eccentricity (e)0.44 Inclination (i)32.4°± 2.4 Longitude of periastron (ω)148.1°
Node (Ω)306.2°± 4 Note Grade9(1=Definitive, 9=Indet.)
Equinox Last observation1992
label rho theta
2000-01-01 0.010 272.5
2001-01-01 0.004 127.8
2002-01-01 0.010 293.9
2003-01-01 0.006 210.9
2004-01-01 0.009 319.0
2005-01-01 0.009 251.4
2006-01-01 0.005 14.3
2007-01-01 0.010 276.2
2008-01-01 0.005 146.6
2009-01-01 0.010 297.6
2010-01-01 0.007 219.9
2011-01-01 0.008 324.7
2012-01-01 0.009 256.3
2013-01-01 0.004 34.4
2014-01-01 0.010 279.9
2015-01-01 0.005 163.2
2016-01-01 0.010 301.5
2017-01-01 0.007 227.8
2018-01-01 0.007 331.3
2019-01-01 0.009 260.8
2020-01-01 0.004 59.0
2021-01-01 0.010 283.6
2022-01-01 0.005 177.9
2023-01-01 0.010 305.6
2024-01-01 0.008 234.9
2025-01-01 0.007 339.1
2026-01-01 0.010 265.1
2027-01-01 0.004 85.2
2028-01-01 0.010 287.2
2029-01-01 0.006 190.8
2030-01-01 0.009 309.9

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

grafico orbita





wds20583%2B4428s.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
20583+4428 RBR 50 2003 1 76 0.4 5.50 11.00 K0III N 205819.38+442817.5

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