04375+1509 CHR 153 (V998 Tau)

 
 
04h 37m 31.98s +15° 08' 47.2" P.A. 137.00 sep 0.6 mag 7.60,11.10 Sp G0 dist. 50 pc (163.1 l.y.)
 
 
Coord 2000 04375+1509 Discov num CHR 153 Comp Coord arcsec 2000 04 37 31.98 +15 08 47.2
Date first 1989 Date last 2021 Obs 18
Pa first 37 Pa last 137.2 P.A. Now (θ) 137.2°
Sep first 0.2 Sep last 0.615 Sep. Now (ρ) 0.615"
Mag pri 7.60 Mag sec 11.10 delta mag (ΔM) 3.5 Spectral class G0 (yellow)
Pri motion ra +103 Sec motion ra
Pri motion dec -028 Sec motion dec
Notes N C (See Notes, Has orbit and linear solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name V998 Tau Constellation Taurus SAO 94040 HIP 21543
Tycho2 1266-00112-1 Gaia DR2 3309493715722074880 HD 29310 GC 5629
BD BD+14 728 Distance 50 Distance ly 163.1
 
 
ORBITAL ELEMENTS
 
 
Period (P)124.9y± 22.6 Periastron (T)2049.6y± 12.5 Semi-major axis (a)0.667a± 0.08
Eccentricity (e)0.2 Inclination (i)73.7°± 1.8 Longitude of periastron (ω)260.5°± 44.3
Node (Ω)324°± 2.2 Notesn ReferenceTok2021b
Equinox Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 99.8 0.302
2001 103.5 0.319
2002 106.8 0.337
2003 109.7 0.355
2004 112.4 0.374
2005 114.8 0.392
2006 117.0 0.411
2007 119.0 0.429
2008 120.8 0.447
2009 122.5 0.465
2010 124.1 0.482
2011 125.5 0.499
2012 126.9 0.515
2013 128.2 0.530
2014 129.4 0.545
2015 130.6 0.559
2016 131.7 0.571
2017 132.7 0.583
2018 133.7 0.594
2019 134.7 0.603
2020 135.7 0.612
2021 136.6 0.619
2022 137.5 0.624
2023 138.4 0.629
2024 139.3 0.632
2025 140.2 0.633
2026 141.1 0.633
2027 142.0 0.631
2028 142.8 0.627
2029 143.7 0.622
2030 144.7 0.614


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



 
 


wds04375%2B1509c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier04375+1509
coord_arcsec_2000043731.98+150847.2
Period (P)2.0097y± 0.0009 Periastron (T)1999.818y± 0.011 Semi-major axis (a)0.037a
Eccentricity (e)0.405± 0.014 Inclination (i)144° Longitude of periastron (ω)339.2°± 3
Node (Ω)319.3°± 11.1 Notes ReferenceTok2021b
Equinox Last observation Grade9(1=Definitive, 9=Indet.)
label theta rho
2000 274.2 0.024
2001 144.1 0.051
2002 277.2 0.024
2003 144.7 0.051
2004 280.2 0.024
2005 145.4 0.051
2006 283.3 0.024
2007 146.1 0.051
2008 286.3 0.024
2009 146.8 0.051
2010 289.4 0.024
2011 147.5 0.051
2012 292.6 0.024
2013 148.1 0.051
2014 295.8 0.023
2015 148.8 0.051
2016 299.0 0.023
2017 149.5 0.051
2018 302.2 0.023
2019 150.1 0.051
2020 305.5 0.023
2021 150.8 0.051
2022 308.8 0.023
2023 151.5 0.051
2024 312.2 0.023
2025 152.2 0.051
2026 315.6 0.023
2027 152.8 0.051
2028 319.1 0.022
2029 153.5 0.051
2030 322.6 0.022


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



 
 


wds04375%2B1509r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic