03556-2613 HDS 495 (HD 24798)
03h 55m 36.30s -26° 12' 54.1" P.A. 67.00 sep 0.2 mag 7.79,10.40 Sp K0III dist. 94.88 pc (309.5 l.y.)
Coord 2000 |
03556-2613 |
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Discov num |
HDS 495 |
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Comp |
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Coord arcsec 2000 |
03 55 36.30 -26 12 54.1 |
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Date first |
1991 |
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Date last |
2020 |
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Obs |
12 |
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Pa first |
269 |
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Pa last |
66.7 |
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P.A. Now (θ) |
66.7° |
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Sep first |
0.2 |
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Sep last |
0.22 |
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Sep. Now (ρ) |
0.22" |
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Mag pri |
7.79 |
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Mag sec |
10.40 |
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delta mag (ΔM) |
2.61 |
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Spectral class |
K0III (yellow-orange) |
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Pri motion ra |
-032 |
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Sec motion ra |
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Pri motion dec |
-018 |
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Sec motion dec |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 24798 |
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Constellation |
Eridanus |
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SAO |
168961 |
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HIP |
18364 |
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Tycho2 |
6458-01171-1 |
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Gaia DR2 |
5082442372833413888 |
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HD |
24798 |
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CD |
CD-26 1479 |
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CP |
CP-26 435 |
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Distance |
94.88 |
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Distance ly |
309.5 |
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ORBITAL ELEMENTS
Period (P) | 50y | |
Periastron (T) | 1991.68y | |
Semi-major axis (a) | 0.207a | |
Eccentricity (e) | 0.093 | |
Inclination (i) | 130.6° | |
Longitude of periastron (ω) | 313.5° | |
Node (Ω) | 230.9° | |
Notes | | |
Reference | Tok2017c | |
Equinox | 2000 | |
Last observation | 2017 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
215.4 |
0.190 |
2001 |
209.7 |
0.185 |
2002 |
203.7 |
0.180 |
2003 |
197.2 |
0.173 |
2004 |
190.3 |
0.166 |
2005 |
182.7 |
0.159 |
2006 |
174.4 |
0.153 |
2007 |
165.6 |
0.148 |
2008 |
156.2 |
0.144 |
2009 |
146.4 |
0.143 |
2010 |
136.7 |
0.144 |
2011 |
127.2 |
0.147 |
2012 |
118.3 |
0.152 |
2013 |
110.0 |
0.159 |
2014 |
102.4 |
0.166 |
2015 |
95.5 |
0.175 |
2016 |
89.3 |
0.183 |
2017 |
83.6 |
0.191 |
2018 |
78.3 |
0.199 |
2019 |
73.5 |
0.206 |
2020 |
68.9 |
0.212 |
2021 |
64.5 |
0.216 |
2022 |
60.3 |
0.219 |
2023 |
56.1 |
0.220 |
2024 |
52.0 |
0.220 |
2025 |
47.8 |
0.217 |
2026 |
43.5 |
0.214 |
2027 |
39.0 |
0.208 |
2028 |
34.2 |
0.201 |
2029 |
29.1 |
0.192 |
2030 |
23.3 |
0.182 |
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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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