20583+4428 RBR 50 (HD 199870)

 
 
20h 58m 19.38s +44° 28' 17.5" P.A. 76.00 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 75.6 P.A. Now (θ) 75.6°
Sep first 0.4 Sep last 0.41 Sep. Now (ρ) 0.41"
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
 
 
Name HD 199870 Constellation Cygnus SAO 50298 HIP 103519
Tycho2 3179-00564-1 Gaia DR2 2162254491519784192 HD 199870 HR 8035
GC 29274 BD BD+43 3777 Distance 79.3 Distance ly 258.68
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier20583+4428
coord_arcsec_2000205819.38+442817.5
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 Notesn ReferenceJnc2005
Equinox Last observation1992 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 272.5 0.010
2001-01-01 127.8 0.004
2002-01-01 293.9 0.010
2003-01-01 210.9 0.006
2004-01-01 319.0 0.009
2005-01-01 251.4 0.009
2006-01-01 14.3 0.005
2007-01-01 276.2 0.010
2008-01-01 146.6 0.005
2009-01-01 297.6 0.010
2010-01-01 219.9 0.007
2011-01-01 324.7 0.008
2012-01-01 256.3 0.009
2013-01-01 34.4 0.004
2014-01-01 279.9 0.010
2015-01-01 163.2 0.005
2016-01-01 301.5 0.010
2017-01-01 227.8 0.007
2018-01-01 331.3 0.007
2019-01-01 260.8 0.009
2020-01-01 59.0 0.004
2021-01-01 283.6 0.010
2022-01-01 177.9 0.005
2023-01-01 305.6 0.010
2024-01-01 234.9 0.008
2025-01-01 339.1 0.007
2026-01-01 265.1 0.010
2027-01-01 85.2 0.004
2028-01-01 287.2 0.010
2029-01-01 190.8 0.006
2030-01-01 309.9 0.009


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



 
 


wds20583%2B4428s.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic