02493-1033 STF 315 (HD 17617)
02h 49m 19.90s -10° 33' 02.2" P.A. 166.00 sep 1.2 mag 8.10,8.90 Sp G0 dist. 57.31 pc (186.95 l.y.)
| Coord 2000 |
02493-1033 |
|
Discov num |
STF 315 |
|
Comp |
|
|
Coord arcsec 2000 |
02 49 19.90 -10 33 02.2 |
|
| Date first |
1831 |
|
Date last |
2018 |
|
Obs |
42 |
|
| Pa first |
160 |
|
Pa last |
165.5 |
|
P.A. Now (θ) |
165.5° |
|
| Sep first |
2.5 |
|
Sep last |
1.196 |
|
Sep. Now (ρ) |
1.196" |
|
| Mag pri |
8.10 |
|
Mag sec |
8.90 |
|
delta mag (ΔM) |
0.8 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
+099 |
|
Sec motion ra |
+099 |
|
| Pri motion dec |
-039 |
|
Sec motion dec |
-039 |
|
| Notes |
C
(Has orbit and linear solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 17617 |
|
Constellation |
Eridanus |
|
SAO |
148622 |
|
HIP |
13168 |
|
| Tycho2 |
5289-00680-1 |
|
Gaia DR2 |
5172817109034113664 |
|
HD |
17617 |
|
GC |
3382 |
|
| ADS |
2156 |
|
BD |
BD-11 529 |
|
Distance |
57.31 |
|
Distance ly |
186.95 |
|
ORBITAL ELEMENTS
| Period (P) | 854.3445y | ± 356.4234 |
Periastron (T) | 1836.4691y | ± 7.4906 |
Semi-major axis (a) | 8.33453a | ± 8.69564 |
| Eccentricity (e) | 0.91309 | ± 0.07691 |
Inclination (i) | 89.028° | ± 0.61 |
Longitude of periastron (ω) | 277.856° | ± 8.134 |
| Node (Ω) | 156.168° | ± 0.895 |
Notes | | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
163.7 |
1.501 |
| 2001 |
163.8 |
1.488 |
| 2002 |
163.9 |
1.475 |
| 2003 |
164.0 |
1.462 |
| 2004 |
164.1 |
1.449 |
| 2005 |
164.1 |
1.436 |
| 2006 |
164.2 |
1.423 |
| 2007 |
164.3 |
1.410 |
| 2008 |
164.5 |
1.397 |
| 2009 |
164.6 |
1.384 |
| 2010 |
164.7 |
1.371 |
| 2011 |
164.8 |
1.358 |
| 2012 |
164.9 |
1.345 |
| 2013 |
165.0 |
1.331 |
| 2014 |
165.1 |
1.318 |
| 2015 |
165.2 |
1.305 |
| 2016 |
165.3 |
1.292 |
| 2017 |
165.5 |
1.278 |
| 2018 |
165.6 |
1.265 |
| 2019 |
165.7 |
1.252 |
| 2020 |
165.9 |
1.238 |
| 2021 |
166.0 |
1.225 |
| 2022 |
166.1 |
1.212 |
| 2023 |
166.3 |
1.198 |
| 2024 |
166.4 |
1.185 |
| 2025 |
166.6 |
1.172 |
| 2026 |
166.7 |
1.158 |
| 2027 |
166.9 |
1.145 |
| 2028 |
167.0 |
1.131 |
| 2029 |
167.2 |
1.118 |
| 2030 |
167.3 |
1.105 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
