02095+3459 MKT 4 (Bet Tri)

 
 
02h 09m 32.52s +34° 59' 14.6" P.A. 46.00 sep 0.0 mag 3.60,4.00 Sp A5 dist. 38.9 pc (126.89 l.y.)
 
 
Coord 2000 02095+3459 Discov num MKT   4 Comp Coord arcsec 2000 02 09 32.52 +34 59 14.6
Date first 1989 Date last 1990 Obs 34
Pa first 258 Pa last 45.9 P.A. Now (θ) 45.9°
Sep first 0.0 Sep last 0.006 Sep. Now (ρ) 0.006"
Mag pri 3.60 Mag sec 4.00 delta mag (ΔM) 0.4 Spectral class A5 (white)
Pri motion ra +148 Sec motion ra
Pri motion dec -040 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Bet Tri Constellation Triangulum SAO 55306 HIP 10064
Tycho2 2317-01647-1 Gaia DR2 329384516559990144 HD 13161 HR 622
GC 2572 BD BD+34 381 Bayer Beta Trianguli Bayer name Bet Tri
Flamsteed 4 Trianguli Flamsteed name 4 Tri FK5 75 Distance 38.9
Distance ly 126.89 Bayer greek β Tri
 
 
ORBITAL ELEMENTS
 
 
Period (P)31.387d± 0.001 Periastron (T)47729.07d (1989.554y)± 0.03 Semi-major axis (a)8.02m± 0.05
Eccentricity (e)0.44± 0.002 Inclination (i)129.9°± 0.2 Longitude of periastron (ω)298.1°± 0.2
Node (Ω)64.9°± 0.3 Notesn ReferenceMkT1995
Equinox2000 Last observation1990 Grade1(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 285.2 0.009
2001-01-01 18.5 0.006
2002-01-01 241.3 0.008
2003-01-01 301.4 0.008
2004-01-01 49.8 0.006
2005-01-01 257.5 0.009
2006-01-01 321.8 0.007
2007-01-01 99.5 0.004
2008-01-01 270.9 0.010
2009-01-01 347.7 0.007
2010-01-01 206.5 0.004
2011-01-01 284.5 0.009
2012-01-01 17.1 0.006
2013-01-01 240.4 0.008
2014-01-01 300.6 0.008
2015-01-01 48.3 0.006
2016-01-01 256.9 0.009
2017-01-01 320.8 0.007
2018-01-01 95.8 0.004
2019-01-01 270.3 0.010
2020-01-01 346.4 0.007
2021-01-01 203.6 0.004
2022-01-01 283.9 0.009
2023-01-01 15.7 0.006
2024-01-01 239.4 0.008
2025-01-01 299.7 0.008
2026-01-01 46.8 0.006
2027-01-01 256.2 0.009
2028-01-01 319.8 0.007
2029-01-01 92.3 0.004
2030-01-01 269.7 0.010


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



 
 


wds02095%2B3459a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic