04256+1556 FIN 342 Aa,Ab
04h 25m 37.25s +15° 56' 27.9" P.A. 157.00 sep 0.1 mag 7.74,7.00 Sp F7V dist. 47.17 pc (153.87 l.y.)
| Coord 2000 |
04256+1556 |
|
Discov num |
FIN 342 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
04 25 37.25 +15 56 27.9 |
|
| Date first |
1959 |
|
Date last |
2021 |
|
Obs |
98 |
|
| Pa first |
148 |
|
Pa last |
157 |
|
P.A. Now (θ) |
129.1° |
|
| Sep first |
0.1 |
|
Sep last |
0.09 |
|
Sep. Now (ρ) |
0.096" |
|
| Mag pri |
7.74 |
|
Mag sec |
7.00 |
|
delta mag (ΔM) |
0.74 |
|
Spectral class |
F7V (yellow-white) |
|
| Pri motion ra |
+108 |
|
Sec motion ra |
|
|
| Pri motion dec |
-026 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
04256+1556 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
93925 |
04 25 37 +15 56 28 |
FIN 342 Aa,Ab |
2021 |
98 |
157 |
0.1 |
7.74 |
7.00 |
0.74 |
Y |
<=== |
| Show |
70 Tau |
93925 |
04 25 37 +15 56 28 |
BUP 57 AB |
2015 |
8 |
339 |
129.5 |
6.45 |
13.39 |
6.94 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Taurus |
|
SAO |
93925 |
|
HIP |
20661 |
|
Tycho2 |
1265-01171-1 |
|
| Gaia DR2 |
3312783561888068352 |
|
HD |
27991 |
|
HR |
1391 |
|
GC |
5356 |
|
| BD |
BD+15 621 |
|
Flamsteed |
70 Tauri |
|
Flamsteed name |
70 Tau |
|
Distance |
47.17 |
|
| Distance ly |
153.87 |
|
ORBITAL ELEMENTS
| Period (P) | 6.28y | |
Periastron (T) | 1988.7y | |
Semi-major axis (a) | 0.105a | |
| Eccentricity (e) | 0.73 | |
Inclination (i) | 122° | |
Longitude of periastron (ω) | 271° | |
| Node (Ω) | 215° | |
Notes | n | |
Reference | Sod1999 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 1 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
76.1 |
0.091 |
| 2001 |
35.1 |
0.050 |
| 2002 |
188.2 |
0.079 |
| 2003 |
158.5 |
0.093 |
| 2004 |
133.0 |
0.096 |
| 2005 |
108.4 |
0.097 |
| 2006 |
83.5 |
0.094 |
| 2007 |
52.3 |
0.072 |
| 2008 |
200.3 |
0.066 |
| 2009 |
166.0 |
0.091 |
| 2010 |
140.0 |
0.095 |
| 2011 |
115.2 |
0.097 |
| 2012 |
90.6 |
0.096 |
| 2013 |
63.0 |
0.083 |
| 2014 |
223.0 |
0.040 |
| 2015 |
173.9 |
0.088 |
| 2016 |
147.1 |
0.095 |
| 2017 |
122.1 |
0.096 |
| 2018 |
97.6 |
0.096 |
| 2019 |
71.6 |
0.089 |
| 2020 |
9.0 |
0.027 |
| 2021 |
182.6 |
0.083 |
| 2022 |
154.3 |
0.094 |
| 2023 |
129.1 |
0.096 |
| 2024 |
104.5 |
0.097 |
| 2025 |
79.4 |
0.093 |
| 2026 |
44.0 |
0.061 |
| 2027 |
192.9 |
0.074 |
| 2028 |
161.7 |
0.093 |
| 2029 |
136.0 |
0.096 |
| 2030 |
111.3 |
0.097 |
|
|
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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