04553-0352 RST 4257 AB
04h 55m 16.46s -03° 51' 55.1" P.A. 42.00 sep 0.1 mag 10.20,10.20 Sp G5 dist. 253.81 pc (827.93 l.y.)
| Coord 2000 |
04553-0352 |
|
Discov num |
RST4257 |
|
Comp |
AB |
|
Coord arcsec 2000 |
04 55 16.46 -03 51 55.1 |
|
| Date first |
1940 |
|
Date last |
2021 |
|
Obs |
14 |
|
| Pa first |
4 |
|
Pa last |
41.6 |
|
P.A. Now (θ) |
41.6° |
|
| Sep first |
0.2 |
|
Sep last |
0.134 |
|
Sep. Now (ρ) |
0.134" |
|
| Mag pri |
10.20 |
|
Mag sec |
10.20 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
+041 |
|
Sec motion ra |
|
|
| Pri motion dec |
-119 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
04553-0352 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
131596 |
04 55 16 -03 51 55 |
RST 4257 AB |
2021 |
14 |
42 |
0.1 |
10.20 |
10.20 |
0.00 |
Y |
<=== |
| Show |
HD 31375 |
131596 |
04 55 16 -03 51 55 |
HJ 352 AB,C |
2015 |
11 |
345 |
52.1 |
9.46 |
11.88 |
2.42 |
|
|
| Show |
|
|
04 55 16 -03 51 07 |
HJ 352 CD |
2015 |
8 |
161 |
15.8 |
12.27 |
14.89 |
2.62 |
|
|
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Eridanus |
|
SAO |
131596 |
|
HIP |
31375 |
|
Tycho2 |
4745-00601-1 |
|
| Gaia DR2 |
3224744527684186368 |
|
HD |
31375 |
|
BD |
BD+12 1201 |
|
Distance |
253.81 |
|
| Distance ly |
827.93 |
|
ORBITAL ELEMENTS
| Period (P) | 87.63y | ± 2.48 |
Periastron (T) | 2011.4y | ± 0.74 |
Semi-major axis (a) | 0.2497a | ± 0.0142 |
| Eccentricity (e) | 0.566 | ± 0.023 |
Inclination (i) | 119.5° | ± 3.2 |
Longitude of periastron (ω) | 3.1° | ± 4.7 |
| Node (Ω) | 169.8° | ± 2.9 |
Notes | | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
298.4 |
0.130 |
| 2001 |
291.5 |
0.117 |
| 2002 |
282.9 |
0.104 |
| 2003 |
272.2 |
0.094 |
| 2004 |
259.2 |
0.086 |
| 2005 |
244.3 |
0.082 |
| 2006 |
228.9 |
0.083 |
| 2007 |
214.3 |
0.087 |
| 2008 |
201.5 |
0.094 |
| 2009 |
190.5 |
0.101 |
| 2010 |
180.8 |
0.106 |
| 2011 |
171.8 |
0.108 |
| 2012 |
162.9 |
0.107 |
| 2013 |
153.3 |
0.101 |
| 2014 |
142.3 |
0.093 |
| 2015 |
129.1 |
0.085 |
| 2016 |
113.6 |
0.079 |
| 2017 |
96.5 |
0.078 |
| 2018 |
79.8 |
0.081 |
| 2019 |
65.3 |
0.089 |
| 2020 |
53.7 |
0.101 |
| 2021 |
44.7 |
0.114 |
| 2022 |
37.6 |
0.129 |
| 2023 |
32.0 |
0.144 |
| 2024 |
27.5 |
0.160 |
| 2025 |
23.8 |
0.175 |
| 2026 |
20.6 |
0.189 |
| 2027 |
17.9 |
0.204 |
| 2028 |
15.6 |
0.218 |
| 2029 |
13.5 |
0.231 |
| 2030 |
11.7 |
0.244 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
