20201+2334 BKO 641

 
 
20h 20m 08.99s +23 33' 37.6" P.A. 98.00 sep 8.0 mag 12.20,14.00
 
 
Coord 2000 20201+2334 Discov num BKO 641 Comp Coord arcsec 2000 20 20 08.99 +23 33 37.6
Date first 2000 Date last 2015 Obs 8
Pa first 99 Pa last 98.4 P.A. Now (θ) 98.4°
Sep first 7.8 Sep last 8.049 Sep. Now (ρ) 8.049"
Mag pri 12.20 Mag sec 14.00 delta mag (ΔM) 1.8 Spectral class
Pri motion ra -042 Sec motion ra
Pri motion dec +008 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Vulpecula Gaia DR2 1831857500844790912
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier20201+2338
coord_arcsec_2000202003.65+233817.2
Period (P)832.0012d (2.28y)± 50.1881 Periastron (T)48574.1094d (1991.867y)± 50.8726 Semi-major axis (a)14.95m± 1.45
Eccentricity (e)0.3255± 0.1375 Inclination (i)36.29°± 10.76 Longitude of periastron (ω)146.62°± 38.79
Node (Ω)97.88°± 21.03 Notesn ReferenceHIP1997d
Equinox Last observation1991 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 81.8 0.019
2001-01-01 256.1 0.010
2002-01-01 60.5 0.018
2003-01-01 167.3 0.010
2004-01-01 33.3 0.015
2005-01-01 119.4 0.015
2006-01-01 352.7 0.012
2007-01-01 94.2 0.019
2008-01-01 297.1 0.011
2009-01-01 73.6 0.019
2010-01-01 220.7 0.009
2011-01-01 50.7 0.017
2012-01-01 142.8 0.012
2013-01-01 19.0 0.014
2014-01-01 108.1 0.017
2015-01-01 331.8 0.012
2016-01-01 85.8 0.019
2017-01-01 270.7 0.010
2018-01-01 65.0 0.018
2019-01-01 183.0 0.009
2020-01-01 39.4 0.016
2021-01-01 125.9 0.014
2022-01-01 2.0 0.013
2023-01-01 98.5 0.018
2024-01-01 308.9 0.011
2025-01-01 77.6 0.019
2026-01-01 238.8 0.009
2027-01-01 55.6 0.017
2028-01-01 153.5 0.011
2029-01-01 26.2 0.014
2030-01-01 113.3 0.016


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



 
 


wds20201%2B2338r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic