02457-3943 B 2077

 
 
02h 45m 44.77s -39° 43' 01.8" P.A. 18.00 sep 10.5 mag 7.86,15.00 Sp G3IV/V dist. 64.89 pc (211.67 l.y.)
 
 
Coord 2000 02457-3943 Discov num B  2077 Comp Coord arcsec 2000 02 45 44.77 -39 43 01.8
Date first 1932 Date last 1999 Obs 2
Pa first 37 Pa last 18 P.A. Now (θ) 18°
Sep first 7.0 Sep last 10.5 Sep. Now (ρ) 10.5"
Mag pri 7.86 Mag sec 15.00 delta mag (ΔM) 7.14 Spectral class G3IV/V (yellow)
Pri motion ra +087 Sec motion ra
Pri motion dec +049 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Eridanus SAO 193898 HIP 12894 Tycho2 7559-00884-1
Gaia DR2 4949308041743808384 HD 17354 GC 3334 CD CD-40 716
CP CP-40 230 Distance 64.89 Distance ly 211.67
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier02457-3943 B 2077 A
coord_arcsec_2000024544.77-394301.8
Period (P)841d (2.3y)± 30 Periastron (T)48839d (1992.592y)± 128 Semi-major axis (a)10.1m± 1.4
Eccentricity (e)0.28± 0.17 Inclination (i)123°± 8 Longitude of periastron (ω)114°± 100
Node (Ω)285°± 94 Notes ReferenceGln2007
Equinox Last observation1991 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 77.0 0.008
2001-01-01 304.3 0.011
2002-01-01 111.8 0.008
2003-01-01 330.4 0.009
2004-01-01 205.5 0.004
2005-01-01 15.0 0.007
2006-01-01 274.9 0.009
2007-01-01 65.3 0.008
2008-01-01 297.9 0.011
2009-01-01 100.5 0.009
2010-01-01 321.1 0.009
2011-01-01 160.8 0.004
2012-01-01 359.1 0.007
2013-01-01 264.3 0.008
2014-01-01 51.7 0.007
2015-01-01 291.6 0.011
2016-01-01 90.4 0.009
2017-01-01 313.1 0.010
2018-01-01 132.1 0.006
2019-01-01 345.1 0.008
2020-01-01 247.7 0.006
2021-01-01 36.3 0.007
2022-01-01 284.9 0.010
2023-01-01 80.1 0.008
2024-01-01 306.1 0.011
2025-01-01 115.4 0.008
2026-01-01 333.3 0.008
2027-01-01 217.5 0.004
2028-01-01 19.7 0.007
2029-01-01 277.3 0.010
2030-01-01 68.7 0.008


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



 
 


wds02457-3943r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic