03344+2428 STF 412AB (7 Tau)

 
 
03H 34M 26.62S +24 27' 52.1" P.A. 351 SEP 0.76 MAG 6.60,6.86 SP A3V+A3V DIST. 131.58 PC (429.21 L.Y.)
 
 
Coord 2000
03344+2428
Discov num
STF 412
Comp
AB
Coord arcsec 2000
03 34 26.62 +24 27 52.1
Date first
1828
Date last
2015
Obs
299
Pa first
272
Pa last
352
P.A. Now (θ)
351°
Sep first
0.6
Sep last
0.8
Sep. Now (ρ)
0.76"
Mag pri
6.60
Mag sec
6.86
delta mag (ΔM)
0.26
Spectral class
A3V+A3V (white/white)
Pri motion ra
+006
Sec motion ra
+006
Pri motion dec
-026
Sec motion dec
-026
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
03344+2428 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 7 Tau 75999 03344+2428 STF 412 AB 1828 2015 299 351 0.8 6.60 6.86 0.26 Y <===
Show 75999 03344+2428 STF 412 AB,C 1782 2014 85 53 22.4 5.94 9.92 3.98
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
7 Tau
Constellation
Taurus
SAO
75999
HIP
16664
Tycho2
1802-01524-1
HD
22091
HR
1086
GC
4257
ADS
2616
BD
BD+23 473
Flamsteed
7 Tauri
Flamsteed name
7 Tau
Distance
131.58
Distance ly
429.21
last precise pa
352.3
last precise sep
0.76
 
 
ORBITAL ELEMENTS
 
 
Period (P)522.16y Periastron (T)1911.62y Semi-major axis (a)0.625a
Eccentricity (e)0.679 Inclination (i)157.2° Longitude of periastron (ω)238.1°
Node (Ω)13° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2000
label rho theta
2000 0.689 356.9
2001 0.693 356.5
2002 0.698 356.2
2003 0.702 355.8
2004 0.706 355.4
2005 0.710 355.1
2006 0.714 354.7
2007 0.718 354.3
2008 0.722 354.0
2009 0.726 353.6
2010 0.730 353.3
2011 0.734 353.0
2012 0.738 352.6
2013 0.742 352.3
2014 0.745 352.0
2015 0.749 351.6
2016 0.753 351.3
2017 0.756 351.0
2018 0.760 350.7
2019 0.764 350.4
2020 0.767 350.1
2021 0.771 349.7
2022 0.774 349.4
2023 0.778 349.1
2024 0.781 348.8
2025 0.784 348.5
2026 0.788 348.2
2027 0.791 348.0
2028 0.794 347.7
2029 0.797 347.4
2030 0.801 347.1

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic