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 |
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Discov num |
STF 554 |
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Comp |
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Coord arcsec 2000 |
04 30 08.60 +15 38 16.2 |
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Date first |
1831 |
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Date last |
2021 |
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Obs |
194 |
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Pa first |
13 |
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Pa last |
14.5 |
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P.A. Now (θ) |
14.7° |
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Sep first |
1.7 |
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Sep last |
1.424 |
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Sep. Now (ρ) |
1.403" |
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Mag pri |
5.70 |
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Mag sec |
8.12 |
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delta mag (ΔM) |
2.42 |
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Spectral class |
F0V+G0V (yellow-white/yellow) |
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Pri motion ra |
+109 |
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Sec motion ra |
+103 |
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Pri motion dec |
-022 |
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Sec motion dec |
-031 |
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Notes |
N
O
(See Notes, Orbital solution) |
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rPM=0.097 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
80 Tau |
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Constellation |
Taurus |
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SAO |
93970 |
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HIP |
20995 |
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Tycho2 |
1265-01175-1 |
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Gaia DR2 |
3312536927686011520 |
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HD |
28485 |
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HR |
1422 |
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GC |
5467 |
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ADS |
3264 |
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BD |
BD+15 636 |
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Flamsteed |
80 Tauri |
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Flamsteed name |
80 Tau |
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Distance |
45.83 |
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Distance ly |
149.5 |
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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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