00026-0829 A 428 (HD 225015)
00h 02m 38.92s -08° 29' 16.6" P.A. 295.00 sep 0.1 mag 9.82,10.07 Sp G0 dist. 134.77 pc (439.62 l.y.)
| Coord 2000 |
00026-0829 |
|
Discov num |
A 428 |
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Comp |
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Coord arcsec 2000 |
00 02 38.92 -08 29 16.6 |
|
| Date first |
1902 |
|
Date last |
2018 |
|
Obs |
44 |
|
| Pa first |
111 |
|
Pa last |
294.6 |
|
P.A. Now (θ) |
294.6° |
|
| Sep first |
0.2 |
|
Sep last |
0.111 |
|
Sep. Now (ρ) |
0.111" |
|
| Mag pri |
9.82 |
|
Mag sec |
10.07 |
|
delta mag (ΔM) |
0.25 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
+000 |
|
Sec motion ra |
|
|
| Pri motion dec |
-003 |
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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 225015 |
|
Constellation |
Cetus |
|
SAO |
128549 |
|
HIP |
210 |
|
| Tycho2 |
5260-00354-1 |
|
Gaia DR2 |
2441125824679584896 |
|
HD |
225015 |
|
ADS |
4 |
|
| BD |
BD-09 6310 |
|
Distance |
134.77 |
|
Distance ly |
439.62 |
|
ORBITAL ELEMENTS
| Period (P) | 414.95y | ± 20.96 |
Periastron (T) | 2005.35y | ± 2.47 |
Semi-major axis (a) | 0.505a | ± 0.021 |
| Eccentricity (e) | 0.503 | ± 0.013 |
Inclination (i) | 111.9° | ± 1.2 |
Longitude of periastron (ω) | 226.8° | ± 4.2 |
| Node (Ω) | 192.2° | ± 2 |
Notes | | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
359.7 |
0.224 |
| 2001 |
358.2 |
0.217 |
| 2002 |
356.7 |
0.210 |
| 2003 |
355.0 |
0.203 |
| 2004 |
353.2 |
0.195 |
| 2005 |
351.3 |
0.188 |
| 2006 |
349.1 |
0.180 |
| 2007 |
346.8 |
0.172 |
| 2008 |
344.3 |
0.164 |
| 2009 |
341.5 |
0.156 |
| 2010 |
338.5 |
0.149 |
| 2011 |
335.1 |
0.141 |
| 2012 |
331.3 |
0.134 |
| 2013 |
327.1 |
0.127 |
| 2014 |
322.5 |
0.121 |
| 2015 |
317.3 |
0.115 |
| 2016 |
311.8 |
0.111 |
| 2017 |
305.7 |
0.107 |
| 2018 |
299.3 |
0.104 |
| 2019 |
292.6 |
0.103 |
| 2020 |
285.8 |
0.103 |
| 2021 |
279.1 |
0.104 |
| 2022 |
272.6 |
0.106 |
| 2023 |
266.4 |
0.109 |
| 2024 |
260.7 |
0.114 |
| 2025 |
255.5 |
0.119 |
| 2026 |
250.7 |
0.126 |
| 2027 |
246.4 |
0.132 |
| 2028 |
242.6 |
0.140 |
| 2029 |
239.1 |
0.148 |
| 2030 |
236.0 |
0.156 |
|
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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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