04287+1552 MKT 13 Aa,Ab

 
 
04h 28m 39.74s +15° 52' 15.2" P.A. 334.00 sep 0.0 mag 3.74,4.86 Sp A7III dist. 46.1 pc (150.38 l.y.)
 
 
Coord 2000 04287+1552 Discov num MKT  13 Comp Aa,Ab Coord arcsec 2000 04 28 39.74 +15 52 15.2
Date first 1989 Date last 1998 Obs 34
Pa first 8 Pa last 333.9 P.A. Now (θ) 333.9°
Sep first 0.0 Sep last 0.009 Sep. Now (ρ) 0.009"
Mag pri 3.74 Mag sec 4.86 delta mag (ΔM) 1.12 Spectral class A7III (white)
Pri motion ra +106 Sec motion ra
Pri motion dec -020 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
04287+1552 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 93957 04 28 40 +15 52 15 MKT 13 Aa,Ab 1998 34 334 0.0 3.74 4.86 1.12 Y <===
Show Chamukuy 93957 04 28 40 +15 52 15 STFA 10 AB 2019 46 347 336.9 3.41 3.94 0.53
Show 93955 04 28 34 +15 57 44 MCA 15 Ba,Bb 2020 51 351 0.2 3.84 7.30 3.46 Y
Show 93955 04 28 34 +15 57 44 BPMA 7 BC 2015 7 75 268.3 3.84 11.96 8.12
Quintuple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Chamukuy Constellation Taurus SAO 93957 HIP 20894
Tycho2 1265-01172-1 Gaia DR2 3312744219987686144 HD 28319 HR 1412
GC 5436 BD BD+15 632 Bayer Theta 2 Tauri Bayer name The2 Tau
Flamsteed 78 Tauri Flamsteed name 78 Tau Distance 46.1 Distance ly 150.38
Bayer greek θ2 Tau
 
 
ORBITAL ELEMENTS
 
 
Period (P)140.7302d± 0.0002 Periastron (T)1995.00144y± 0.00002 Semi-major axis (a)18.91m± 0.06
Eccentricity (e)0.736± 0.0003 Inclination (i)47.8°± 0.1 Longitude of periastron (ω)235.41°± 0.08
Node (Ω)353.82°± 0.09 Notesn ReferenceLmp2011
Equinox2000 Last observation1991 Grade1(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 161.8 0.007
2001-01-01 44.3 0.025
2002-01-01 7.1 0.021
2003-01-01 68.6 0.018
2004-01-01 26.0 0.027
2005-01-01 139.2 0.009
2006-01-01 42.1 0.025
2007-01-01 3.7 0.019
2008-01-01 64.6 0.019
2009-01-01 24.1 0.026
2010-01-01 123.0 0.010
2011-01-01 40.0 0.026
2012-01-01 359.6 0.017
2013-01-01 61.0 0.020
2014-01-01 22.1 0.026
2015-01-01 110.5 0.011
2016-01-01 37.9 0.026
2017-01-01 354.5 0.015
2018-01-01 57.8 0.021
2019-01-01 20.0 0.026
2020-01-01 100.3 0.012
2021-01-01 35.9 0.026
2022-01-01 347.3 0.012
2023-01-01 54.8 0.022
2024-01-01 17.9 0.025
2025-01-01 92.0 0.013
2026-01-01 34.0 0.027
2027-01-01 335.4 0.009
2028-01-01 52.0 0.023
2029-01-01 15.6 0.024
2030-01-01 85.0 0.015


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



 
 


wds04287%2B1552d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic