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 |
|
Discov num |
HDS 613 |
|
Comp |
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Coord arcsec 2000 |
04 45 59.13 -66 04 43.6 |
|
| Date first |
1991 |
|
Date last |
2020 |
|
Obs |
5 |
|
| Pa first |
215 |
|
Pa last |
234.3 |
|
P.A. Now (θ) |
50.6° |
|
| Sep first |
0.2 |
|
Sep last |
0.241 |
|
Sep. Now (ρ) |
0.236" |
|
| Mag pri |
8.12 |
|
Mag sec |
8.35 |
|
delta mag (ΔM) |
0.23 |
|
Spectral class |
F3V (yellow-white) |
|
| Pri motion ra |
+029 |
|
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 |
|
Constellation |
Dorado |
|
SAO |
249104 |
|
HIP |
22150 |
|
| Tycho2 |
8888-01166-1 |
|
Gaia DR2 |
4662611518682841984 |
|
HD |
30805 |
|
GC |
5848 |
|
| CP |
CP-66 320 |
|
Distance |
85.69 |
|
Distance ly |
279.52 |
|
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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