04301+1538 STF 554 (80 Tau)

 
 
04h 30m 08.60s +15 38' 16.2" P.A. 14.7 sep 1.55 mag 5.70,8.12 Sp F0V+G0V dist. 45.83 pc (149.5 l.y.)
 
 
Coord 2000
04301+1538
Discov num
STF 554
Comp
Coord arcsec 2000
04 30 08.60 +15 38 16.2
Date first
1831
Date last
2015
Obs
177
Pa first
13
Pa last
16
P.A. Now (θ)
14.7°
Sep first
1.7
Sep last
1.5
Sep. Now (ρ)
1.55"
Mag pri
5.70
Mag sec
8.12
delta mag (ΔM)
2.42
Spectral class
F0V+G0V (yellow-white/yellow)
Pri motion ra
+111
Sec motion ra
+111
Pri motion dec
-028
Sec motion dec
-028
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
15.5
Precise sep
1.465
Name
80 Tau
Constellation
Taurus
SAO
93970
HIP
20995
Tycho2
1265-01175-1
HD
28485
HR
1422
GC
5467
ADS
3264
BD
BD+15 636
Flamsteed
80 Tauri
Flamsteed name
80 Tau
Distance
45.83
Distance ly
149.5
last precise pa
15.5
last precise sep
1.465
 
 
ORBITAL ELEMENTS
 
 
Period (P)180y Periastron (T)1887y Semi-major axis (a)1a
Eccentricity (e)0.82 Inclination (i)107.6° Longitude of periastron (ω)162°
Node (Ω)14° Note Grade4(1=Definitive, 9=Indet.)
Equinox Last observation1975
label rho theta
2000 1.716 17.0
2001 1.711 16.9
2002 1.705 16.8
2003 1.699 16.6
2004 1.692 16.5
2005 1.685 16.4
2006 1.677 16.3
2007 1.669 16.1
2008 1.661 16.0
2009 1.652 15.9
2010 1.643 15.8
2011 1.634 15.6
2012 1.624 15.5
2013 1.613 15.4
2014 1.602 15.2
2015 1.591 15.1
2016 1.579 15.0
2017 1.567 14.8
2018 1.554 14.7
2019 1.540 14.5
2020 1.527 14.4
2021 1.512 14.2
2022 1.497 14.1
2023 1.482 13.9
2024 1.466 13.8
2025 1.450 13.6
2026 1.433 13.4
2027 1.415 13.3
2028 1.397 13.1
2029 1.378 12.9
2030 1.358 12.7

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

grafico orbita





wds04301%2B1538a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
04301+1538 STF 554 2005 169 18 1.6 5.70 8.12 F0V+G0V NOD 043008.60+153816.2
04301+1538 STF 554 2009 170 21 1.6 5.70 8.12 F0V+G0V NOD 043008.60+153816.2
04301+1538 STF 554 2013 173 14 1.6 5.70 8.12 F0V G0V NOD 043008.60+153816.2
04301+1538 STF 554 2014 176 16 1.5 5.70 8.12 F0V+G0V NO 043008.60+153816.2
04301+1538 STF 554 2015 177 16 1.5 5.70 8.12 F0V+G0V NO 043008.60+153816.2

If you need more information about this double, apply for a data request form to the WDS.