05544+2017 KNG 1 (Chi1 Ori)
05h 54m 22.97s +20° 16' 34.2" P.A. 92.00 sep 0.0 mag 4.46,7.50 Sp G0V dist. 8.66 pc (28.25 l.y.)
| Coord 2000 |
05544+2017 |
|
Discov num |
KNG 1 |
|
Comp |
|
|
Coord arcsec 2000 |
05 54 22.97 +20 16 34.2 |
|
| Date first |
1982 |
|
Date last |
2019 |
|
Obs |
5 |
|
| Pa first |
326 |
|
Pa last |
92.2 |
|
P.A. Now (θ) |
92.2° |
|
| Sep first |
0.7 |
|
Sep last |
0.033 |
|
Sep. Now (ρ) |
0.033" |
|
| Mag pri |
4.46 |
|
Mag sec |
7.50 |
|
delta mag (ΔM) |
3.04 |
|
Spectral class |
G0V (yellow) |
|
| Pri motion ra |
-175 |
|
Sec motion ra |
|
|
| Pri motion dec |
-090 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
Chi1 Ori |
|
Constellation |
Orion |
|
SAO |
77705 |
|
HIP |
27913 |
|
| Tycho2 |
1320-02118-1 |
|
Gaia DR2 |
3399063235753901952 |
|
HD |
39587 |
|
HR |
2047 |
|
| GC |
7419 |
|
GL |
Gl 222A |
|
BD |
BD+20 1162 |
|
Bayer |
Chi 1 Orionis |
|
| Bayer name |
Chi1 Ori |
|
Flamsteed |
54 Orionis |
|
Flamsteed name |
54 Ori |
|
Distance |
8.66 |
|
| Distance ly |
28.25 |
|
Bayer greek |
χ1 Ori |
|
ORBITAL ELEMENTS
| Period (P) | 5156.291d (14.12y) | ± 2.508 |
Periastron (T) | 51468.2d (1999.791y) | ± 3.083 |
Semi-major axis (a) | 89.662m | ± 0.88 |
| Eccentricity (e) | 0.452 | ± 0.002 |
Inclination (i) | 95.937° | ± 0.79 |
Longitude of periastron (ω) | 111.527° | ± 0.23 |
| Node (Ω) | 126.36° | ± 0.593 |
Notes | n | |
Reference | HaI2002 | |
| Equinox | | |
Last observation | 2000 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
314.1 |
0.030 |
| 2001 |
305.6 |
0.064 |
| 2002 |
301.2 |
0.064 |
| 2003 |
295.2 |
0.048 |
| 2004 |
280.4 |
0.026 |
| 2005 |
208.0 |
0.013 |
| 2006 |
151.8 |
0.030 |
| 2007 |
140.0 |
0.053 |
| 2008 |
135.0 |
0.072 |
| 2009 |
132.1 |
0.087 |
| 2010 |
129.9 |
0.096 |
| 2011 |
127.8 |
0.094 |
| 2012 |
125.3 |
0.077 |
| 2013 |
119.2 |
0.037 |
| 2014 |
317.2 |
0.024 |
| 2015 |
306.2 |
0.062 |
| 2016 |
301.8 |
0.065 |
| 2017 |
296.1 |
0.050 |
| 2018 |
283.3 |
0.029 |
| 2019 |
221.6 |
0.013 |
| 2020 |
154.4 |
0.028 |
| 2021 |
140.8 |
0.050 |
| 2022 |
135.5 |
0.070 |
| 2023 |
132.4 |
0.086 |
| 2024 |
130.1 |
0.095 |
| 2025 |
128.1 |
0.095 |
| 2026 |
125.6 |
0.080 |
| 2027 |
120.5 |
0.043 |
| 2028 |
322.6 |
0.017 |
| 2029 |
306.8 |
0.060 |
| 2030 |
302.3 |
0.066 |
|
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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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