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 |
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Discov num |
STF 315 |
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Comp |
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Coord arcsec 2000 |
02 49 19.90 -10 33 02.2 |
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Date first |
1831 |
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Date last |
2018 |
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Obs |
42 |
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Pa first |
160 |
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Pa last |
165.5 |
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P.A. Now (θ) |
165.5° |
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Sep first |
2.5 |
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Sep last |
1.196 |
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Sep. Now (ρ) |
1.196" |
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Mag pri |
8.10 |
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Mag sec |
8.90 |
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delta mag (ΔM) |
0.8 |
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Spectral class |
G0 (yellow) |
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Pri motion ra |
+099 |
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Sec motion ra |
+099 |
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Pri motion dec |
-039 |
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Sec motion dec |
-039 |
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Notes |
C
(Has orbit and linear solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 17617 |
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Constellation |
Eridanus |
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SAO |
148622 |
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HIP |
13168 |
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Tycho2 |
5289-00680-1 |
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Gaia DR2 |
5172817109034113664 |
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HD |
17617 |
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GC |
3382 |
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ADS |
2156 |
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BD |
BD-11 529 |
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Distance |
57.31 |
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Distance ly |
186.95 |
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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 |
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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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