04139+0916 BU 547 AB (47 Tau)
04h 13m 56.39s +09° 15' 50.0" P.A. 339.00 sep 1.3 mag 5.05,7.32 Sp G5IV+A8V dist. 101.73 pc (331.84 l.y.)
| Coord 2000 |
04139+0916 |
|
Discov num |
BU 547 |
|
Comp |
AB |
|
Coord arcsec 2000 |
04 13 56.39 +09 15 50.0 |
|
| Date first |
1877 |
|
Date last |
2016 |
|
Obs |
60 |
|
| Pa first |
359 |
|
Pa last |
338.9 |
|
P.A. Now (θ) |
338.9° |
|
| Sep first |
0.9 |
|
Sep last |
1.264 |
|
Sep. Now (ρ) |
1.264" |
|
| Mag pri |
5.05 |
|
Mag sec |
7.32 |
|
delta mag (ΔM) |
2.27 |
|
Spectral class |
G5IV+A8V (yellow/white) |
|
| Pri motion ra |
-011 |
|
Sec motion ra |
-011 |
|
| Pri motion dec |
-037 |
|
Sec motion dec |
-037 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
04139+0916 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
47 Tau |
111674 |
04 13 56 +09 15 50 |
BU 547 AB |
2016 |
60 |
339 |
1.3 |
5.05 |
7.32 |
2.27 |
Y |
<=== |
| Show |
|
111674 |
04 13 56 +09 15 50 |
BU 547 AC |
2015 |
9 |
228 |
28.2 |
5.05 |
13.20 |
8.15 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
47 Tau |
|
Constellation |
Taurus |
|
SAO |
111674 |
|
HIP |
19740 |
|
| Tycho2 |
0667-00840-1 |
|
Gaia DR2 |
3300128870247575424 |
|
HD |
26722 |
|
HR |
1311 |
|
| GC |
5100 |
|
ADS |
3072 |
|
BD |
BD+08 652 |
|
Flamsteed |
47 Tauri |
|
| Flamsteed name |
47 Tau |
|
Distance |
101.73 |
|
Distance ly |
331.84 |
|
ORBITAL ELEMENTS
| Period (P) | 479y | |
Periastron (T) | 1816.6y | |
Semi-major axis (a) | 1.053a | |
| Eccentricity (e) | 0.91 | |
Inclination (i) | 128.6° | |
Longitude of periastron (ω) | 263° | |
| Node (Ω) | 52.9° | |
Notes | n | |
Reference | Zir2015a | |
| Equinox | 2000 | |
Last observation | 2009 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
341.6 |
1.250 |
| 2001 |
341.4 |
1.251 |
| 2002 |
341.3 |
1.252 |
| 2003 |
341.2 |
1.253 |
| 2004 |
341.0 |
1.254 |
| 2005 |
340.9 |
1.255 |
| 2006 |
340.8 |
1.256 |
| 2007 |
340.6 |
1.257 |
| 2008 |
340.5 |
1.257 |
| 2009 |
340.3 |
1.258 |
| 2010 |
340.2 |
1.259 |
| 2011 |
340.1 |
1.260 |
| 2012 |
339.9 |
1.261 |
| 2013 |
339.8 |
1.261 |
| 2014 |
339.7 |
1.262 |
| 2015 |
339.5 |
1.263 |
| 2016 |
339.4 |
1.263 |
| 2017 |
339.3 |
1.264 |
| 2018 |
339.1 |
1.265 |
| 2019 |
339.0 |
1.265 |
| 2020 |
338.9 |
1.266 |
| 2021 |
338.7 |
1.266 |
| 2022 |
338.6 |
1.267 |
| 2023 |
338.5 |
1.267 |
| 2024 |
338.3 |
1.268 |
| 2025 |
338.2 |
1.268 |
| 2026 |
338.1 |
1.269 |
| 2027 |
337.9 |
1.269 |
| 2028 |
337.8 |
1.269 |
| 2029 |
337.6 |
1.270 |
| 2030 |
337.5 |
1.270 |
|
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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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