04545-0314 RST 5501 (HD 31297)
04h 54m 27.96s -03° 13' 33.3" P.A. 144.00 sep 0.1 mag 7.29,7.46 Sp F5 dist. 124.53 pc (406.22 l.y.)
| Coord 2000 |
04545-0314 |
|
Discov num |
RST5501 |
|
Comp |
|
|
Coord arcsec 2000 |
04 54 27.96 -03 13 33.3 |
|
| Date first |
1950 |
|
Date last |
2021 |
|
Obs |
43 |
|
| Pa first |
88 |
|
Pa last |
144.3 |
|
P.A. Now (θ) |
138.3° |
|
| Sep first |
0.2 |
|
Sep last |
0.141 |
|
Sep. Now (ρ) |
0.145" |
|
| Mag pri |
7.29 |
|
Mag sec |
7.46 |
|
delta mag (ΔM) |
0.17 |
|
Spectral class |
F5 (yellow-white) |
|
| Pri motion ra |
+028 |
|
Sec motion ra |
|
|
| Pri motion dec |
-007 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 31297 |
|
Constellation |
Orion |
|
SAO |
131587 |
|
HIP |
22812 |
|
| Tycho2 |
4741-01619-1 |
|
Gaia DR2 |
3224848951225748480 |
|
HD |
31297 |
|
GC |
5982 |
|
| BD |
BD-03 928 |
|
Distance |
124.53 |
|
Distance ly |
406.22 |
|
ORBITAL ELEMENTS
| Period (P) | 84.66y | ± 1.42 |
Periastron (T) | 2004.32y | ± 0.39 |
Semi-major axis (a) | 0.243a | ± 0.003 |
| Eccentricity (e) | 0.515 | ± 0.011 |
Inclination (i) | 120.8° | ± 1.4 |
Longitude of periastron (ω) | 310.3° | ± 1.9 |
| Node (Ω) | 219.1° | ± 1 |
Notes | n | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
342.6 |
0.082 |
| 2001 |
322.9 |
0.069 |
| 2002 |
297.8 |
0.065 |
| 2003 |
273.5 |
0.071 |
| 2004 |
254.9 |
0.084 |
| 2005 |
241.8 |
0.100 |
| 2006 |
232.1 |
0.114 |
| 2007 |
224.5 |
0.126 |
| 2008 |
218.0 |
0.135 |
| 2009 |
212.3 |
0.142 |
| 2010 |
207.0 |
0.146 |
| 2011 |
201.9 |
0.148 |
| 2012 |
196.9 |
0.148 |
| 2013 |
191.9 |
0.148 |
| 2014 |
186.8 |
0.147 |
| 2015 |
181.6 |
0.146 |
| 2016 |
176.4 |
0.144 |
| 2017 |
171.0 |
0.143 |
| 2018 |
165.6 |
0.142 |
| 2019 |
160.1 |
0.141 |
| 2020 |
154.5 |
0.141 |
| 2021 |
149.0 |
0.142 |
| 2022 |
143.6 |
0.143 |
| 2023 |
138.3 |
0.145 |
| 2024 |
133.1 |
0.148 |
| 2025 |
128.2 |
0.151 |
| 2026 |
123.5 |
0.155 |
| 2027 |
119.0 |
0.160 |
| 2028 |
114.9 |
0.165 |
| 2029 |
110.9 |
0.170 |
| 2030 |
107.2 |
0.176 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
