04301+1538 STF 554 (80 Tau)
04h 30m 08.60s +15° 38' 16.2" P.A. 15.00 sep 1.4 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 |
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Coord arcsec 2000 |
04 30 08.60 +15 38 16.2 |
|
| Date first |
1831 |
|
Date last |
2021 |
|
Obs |
194 |
|
| Pa first |
13 |
|
Pa last |
14.5 |
|
P.A. Now (θ) |
14.7° |
|
| Sep first |
1.7 |
|
Sep last |
1.424 |
|
Sep. Now (ρ) |
1.403" |
|
| Mag pri |
5.70 |
|
Mag sec |
8.12 |
|
delta mag (ΔM) |
2.42 |
|
Spectral class |
F0V+G0V (yellow-white/yellow) |
|
| Pri motion ra |
+109 |
|
Sec motion ra |
+103 |
|
| Pri motion dec |
-022 |
|
Sec motion dec |
-031 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.097 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
80 Tau |
|
Constellation |
Taurus |
|
SAO |
93970 |
|
HIP |
20995 |
|
| Tycho2 |
1265-01175-1 |
|
Gaia DR2 |
3312536927686011520 |
|
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 |
|
ORBITAL ELEMENTS
| Period (P) | 172.5y | ± 2.1 |
Periastron (T) | 1891.9y | ± 1.7 |
Semi-major axis (a) | 0.908a | ± 0.044 |
| Eccentricity (e) | 0.915 | ± 0.02 |
Inclination (i) | 115.5° | ± 3.8 |
Longitude of periastron (ω) | 159.2° | ± 8.6 |
| Node (Ω) | 10.8° | ± 4.7 |
Notes | n | |
Reference | Trr2019 | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
17.7 |
1.616 |
| 2001 |
17.6 |
1.611 |
| 2002 |
17.4 |
1.605 |
| 2003 |
17.3 |
1.600 |
| 2004 |
17.2 |
1.593 |
| 2005 |
17.1 |
1.587 |
| 2006 |
17.0 |
1.580 |
| 2007 |
16.9 |
1.573 |
| 2008 |
16.7 |
1.565 |
| 2009 |
16.6 |
1.557 |
| 2010 |
16.5 |
1.549 |
| 2011 |
16.4 |
1.540 |
| 2012 |
16.2 |
1.531 |
| 2013 |
16.1 |
1.521 |
| 2014 |
16.0 |
1.512 |
| 2015 |
15.8 |
1.501 |
| 2016 |
15.7 |
1.490 |
| 2017 |
15.6 |
1.479 |
| 2018 |
15.4 |
1.468 |
| 2019 |
15.3 |
1.456 |
| 2020 |
15.2 |
1.443 |
| 2021 |
15.0 |
1.430 |
| 2022 |
14.9 |
1.417 |
| 2023 |
14.7 |
1.403 |
| 2024 |
14.6 |
1.389 |
| 2025 |
14.4 |
1.374 |
| 2026 |
14.2 |
1.359 |
| 2027 |
14.1 |
1.343 |
| 2028 |
13.9 |
1.327 |
| 2029 |
13.7 |
1.310 |
| 2030 |
13.6 |
1.292 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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