04368-1733 A 2915
04h 36m 49.17s -17° 33' 00.7" P.A. 329.00 sep 0.2 mag 10.10,10.10 Sp G5
| Coord 2000 |
04368-1733 |
|
Discov num |
A 2915 |
|
Comp |
|
|
Coord arcsec 2000 |
04 36 49.17 -17 33 00.7 |
|
| Date first |
1917 |
|
Date last |
2021 |
|
Obs |
21 |
|
| Pa first |
342 |
|
Pa last |
328.7 |
|
P.A. Now (θ) |
328.7° |
|
| Sep first |
0.3 |
|
Sep last |
0.25 |
|
Sep. Now (ρ) |
0.25" |
|
| Mag pri |
10.10 |
|
Mag sec |
10.10 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
-040 |
|
Sec motion ra |
|
|
| Pri motion dec |
-038 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Eridanus |
|
Tycho2 |
5894-00769-1 |
|
Gaia DR2 |
3171153888567088256 |
|
ADS |
3341 |
|
ORBITAL ELEMENTS
| Period (P) | 109.99y | ± 7.99 |
Periastron (T) | 2012.35y | ± 1.14 |
Semi-major axis (a) | 0.305a | ± 0.025 |
| Eccentricity (e) | 0.47 | ± 0.053 |
Inclination (i) | 62° | ± 5 |
Longitude of periastron (ω) | 94.1° | ± 12.9 |
| Node (Ω) | 151.8° | ± 4.1 |
Notes | | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
152.2 |
0.244 |
| 2001 |
154.5 |
0.234 |
| 2002 |
156.9 |
0.222 |
| 2003 |
159.6 |
0.210 |
| 2004 |
162.7 |
0.195 |
| 2005 |
166.2 |
0.180 |
| 2006 |
170.5 |
0.163 |
| 2007 |
175.9 |
0.145 |
| 2008 |
182.7 |
0.127 |
| 2009 |
191.9 |
0.109 |
| 2010 |
204.6 |
0.092 |
| 2011 |
221.8 |
0.080 |
| 2012 |
242.9 |
0.076 |
| 2013 |
263.9 |
0.081 |
| 2014 |
280.9 |
0.093 |
| 2015 |
293.5 |
0.109 |
| 2016 |
302.6 |
0.127 |
| 2017 |
309.5 |
0.145 |
| 2018 |
314.8 |
0.162 |
| 2019 |
319.2 |
0.178 |
| 2020 |
322.9 |
0.193 |
| 2021 |
326.0 |
0.206 |
| 2022 |
328.8 |
0.218 |
| 2023 |
331.4 |
0.228 |
| 2024 |
333.7 |
0.237 |
| 2025 |
335.9 |
0.245 |
| 2026 |
337.9 |
0.251 |
| 2027 |
339.9 |
0.256 |
| 2028 |
341.8 |
0.261 |
| 2029 |
343.6 |
0.264 |
| 2030 |
345.4 |
0.267 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
