00373-2446 BU 395 (HD 3443)

 
 
00h 37m 20.68s -24 46' 02.1" P.A. 198.00 sep 0.1 mag 6.60,6.20 Sp G8V dist. 15.4 pc (50.23 l.y.)
 
 
Coord 2000 00373-2446 Discov num BU  395 Comp Coord arcsec 2000 00 37 20.68 -24 46 02.1
Date first 1875 Date last 2021 Obs 193
Pa first 315 Pa last 197.6 P.A. Now (θ) 273°
Sep first 0.5 Sep last 0.109 Sep. Now (ρ) 0.28"
Mag pri 6.60 Mag sec 6.20 delta mag (ΔM) 0.4 Spectral class G8V (yellow)
Pri motion ra +140 Sec motion ra +140
Pri motion dec -001 Sec motion dec -001
Notes N O P (See Notes, Orbital solution, 100-year proper motion)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 3443 Constellation Cetus SAO 166418 HIP 2941
Tycho2 6421-01924-1 HD 3443 HR 159 GC 741
ADS 520 GL Gl 25A CD CD-25 225 CP CP-25 64
Distance 15.4 Distance ly 50.23
 
 
ORBITAL ELEMENTS
 
 
Period (P)25.02y Periastron (T)1998.78y Semi-major axis (a)0.675a
Eccentricity (e)0.218 Inclination (i)78.6° Longitude of periastron (ω)318.1°
Node (Ω)291.98° Notesn ReferenceHrt2010a
Equinox2000 Last observation2009 Grade1(1=Definitive, 9=Indet.)
label theta rho
2000 289.1 0.523
2001 293.4 0.558
2002 297.5 0.536
2003 302.5 0.468
2004 309.7 0.369
2005 323.1 0.256
2006 354.7 0.163
2007 47.9 0.168
2008 77.5 0.265
2009 90.0 0.383
2010 96.7 0.496
2011 100.9 0.596
2012 104.1 0.677
2013 106.6 0.737
2014 108.8 0.771
2015 110.9 0.776
2016 113.0 0.751
2017 115.4 0.694
2018 118.4 0.602
2019 122.8 0.478
2020 130.8 0.326
2021 154.6 0.165
2022 237.3 0.132
2023 273.0 0.280
2024 283.4 0.425
2025 289.0 0.522
2026 293.3 0.558
2027 297.4 0.537
2028 302.4 0.470
2029 309.6 0.371
2030 322.7 0.258


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



 
 


wds00373-2446a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic