04187+0445 A 1939 (HD 27283)
04h 18m 41.83s +04° 45' 02.4" P.A. 310.00 sep 0.6 mag 9.56,9.60 Sp F2 dist. 220.75 pc (720.09 l.y.)
| Coord 2000 |
04187+0445 |
|
Discov num |
A 1939 |
|
Comp |
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Coord arcsec 2000 |
04 18 41.83 +04 45 02.4 |
|
| Date first |
1908 |
|
Date last |
2019 |
|
Obs |
15 |
|
| Pa first |
247 |
|
Pa last |
309.5 |
|
P.A. Now (θ) |
309.5° |
|
| Sep first |
0.8 |
|
Sep last |
0.59 |
|
Sep. Now (ρ) |
0.59" |
|
| Mag pri |
9.56 |
|
Mag sec |
9.60 |
|
delta mag (ΔM) |
0.04 |
|
Spectral class |
F2 (yellow-white) |
|
| Pri motion ra |
+013 |
|
Sec motion ra |
+013 |
|
| Pri motion dec |
-017 |
|
Sec motion dec |
-017 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 27283 |
|
Constellation |
Taurus |
|
SAO |
111737 |
|
HIP |
20111 |
|
| Tycho2 |
0077-00436-1 |
|
Gaia DR2 |
3283686910804130048 |
|
HD |
27283 |
|
ADS |
3116 |
|
| BD |
BD+04 673 |
|
Distance |
220.75 |
|
Distance ly |
720.09 |
|
ORBITAL ELEMENTS
| Period (P) | 544y | |
Periastron (T) | 2201.5y | |
Semi-major axis (a) | 0.876a | |
| Eccentricity (e) | 0 | |
Inclination (i) | 50.8° | |
Longitude of periastron (ω) | 0° | |
| Node (Ω) | 75.8° | |
Notes | | |
Reference | Zir2012b | |
| Equinox | 2000 | |
Last observation | 2003 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
289.6 |
0.724 |
| 2001 |
290.2 |
0.720 |
| 2002 |
290.8 |
0.716 |
| 2003 |
291.5 |
0.713 |
| 2004 |
292.1 |
0.709 |
| 2005 |
292.8 |
0.705 |
| 2006 |
293.4 |
0.701 |
| 2007 |
294.1 |
0.698 |
| 2008 |
294.7 |
0.694 |
| 2009 |
295.4 |
0.690 |
| 2010 |
296.1 |
0.687 |
| 2011 |
296.8 |
0.683 |
| 2012 |
297.4 |
0.679 |
| 2013 |
298.1 |
0.675 |
| 2014 |
298.9 |
0.672 |
| 2015 |
299.6 |
0.668 |
| 2016 |
300.3 |
0.664 |
| 2017 |
301.0 |
0.661 |
| 2018 |
301.8 |
0.657 |
| 2019 |
302.5 |
0.654 |
| 2020 |
303.3 |
0.650 |
| 2021 |
304.0 |
0.646 |
| 2022 |
304.8 |
0.643 |
| 2023 |
305.6 |
0.639 |
| 2024 |
306.4 |
0.636 |
| 2025 |
307.2 |
0.633 |
| 2026 |
308.0 |
0.629 |
| 2027 |
308.8 |
0.626 |
| 2028 |
309.6 |
0.623 |
| 2029 |
310.4 |
0.619 |
| 2030 |
311.3 |
0.616 |
|
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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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