04460-6605 HDS 613 (HD 30805)
04h 45m 59.13s -66° 04' 43.6" P.A. 234.00 sep 0.2 mag 8.12,8.35 Sp F3V dist. 85.69 pc (279.52 l.y.)
Coord 2000 |
04460-6605 |
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Discov num |
HDS 613 |
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Comp |
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Coord arcsec 2000 |
04 45 59.13 -66 04 43.6 |
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Date first |
1991 |
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Date last |
2020 |
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Obs |
5 |
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Pa first |
215 |
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Pa last |
234.3 |
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P.A. Now (θ) |
50.6° |
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Sep first |
0.2 |
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Sep last |
0.241 |
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Sep. Now (ρ) |
0.236" |
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Mag pri |
8.12 |
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Mag sec |
8.35 |
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delta mag (ΔM) |
0.23 |
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Spectral class |
F3V (yellow-white) |
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Pri motion ra |
+029 |
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Sec motion ra |
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Pri motion dec |
+033 |
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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 30805 |
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Constellation |
Dorado |
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SAO |
249104 |
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HIP |
22150 |
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Tycho2 |
8888-01166-1 |
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Gaia DR2 |
4662611518682841984 |
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HD |
30805 |
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GC |
5848 |
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CP |
CP-66 320 |
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Distance |
85.69 |
|
Distance ly |
279.52 |
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ORBITAL ELEMENTS
Period (P) | 55y | |
Periastron (T) | 2033.4y | |
Semi-major axis (a) | 0.242a | |
Eccentricity (e) | 0.362 | |
Inclination (i) | 104.1° | |
Longitude of periastron (ω) | 99° | |
Node (Ω) | 47.9° | |
Notes | | |
Reference | Tok2021c | |
Equinox | 2000 | |
Last observation | 2021 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
176.1 |
0.097 |
2001 |
165.8 |
0.088 |
2002 |
153.7 |
0.082 |
2003 |
140.3 |
0.080 |
2004 |
126.8 |
0.081 |
2005 |
114.4 |
0.087 |
2006 |
103.9 |
0.096 |
2007 |
95.3 |
0.106 |
2008 |
88.4 |
0.118 |
2009 |
82.8 |
0.131 |
2010 |
78.2 |
0.145 |
2011 |
74.4 |
0.158 |
2012 |
71.2 |
0.171 |
2013 |
68.4 |
0.183 |
2014 |
65.9 |
0.195 |
2015 |
63.8 |
0.206 |
2016 |
61.8 |
0.215 |
2017 |
60.0 |
0.224 |
2018 |
58.3 |
0.231 |
2019 |
56.7 |
0.236 |
2020 |
55.2 |
0.240 |
2021 |
53.7 |
0.241 |
2022 |
52.2 |
0.240 |
2023 |
50.6 |
0.236 |
2024 |
49.0 |
0.229 |
2025 |
47.3 |
0.219 |
2026 |
45.4 |
0.206 |
2027 |
43.1 |
0.188 |
2028 |
40.4 |
0.166 |
2029 |
36.6 |
0.140 |
2030 |
31.1 |
0.111 |
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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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