02254+0135 HDS 315 (HD 15030)
02h 25m 23.19s +01° 35' 15.2" P.A. 2.00 sep 0.2 mag 9.24,11.53 Sp F5 dist. 159.24 pc (519.44 l.y.)
| Coord 2000 |
02254+0135 |
|
Discov num |
HDS 315 |
|
Comp |
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Coord arcsec 2000 |
02 25 23.19 +01 35 15.2 |
|
| Date first |
1991 |
|
Date last |
2018 |
|
Obs |
8 |
|
| Pa first |
258 |
|
Pa last |
1.8 |
|
P.A. Now (θ) |
1.8° |
|
| Sep first |
0.2 |
|
Sep last |
0.197 |
|
Sep. Now (ρ) |
0.197" |
|
| Mag pri |
9.24 |
|
Mag sec |
11.53 |
|
delta mag (ΔM) |
2.29 |
|
Spectral class |
F5 (yellow-white) |
|
| Pri motion ra |
-021 |
|
Sec motion ra |
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|
| Pri motion dec |
+040 |
|
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 15030 |
|
Constellation |
Cetus |
|
SAO |
110524 |
|
HIP |
11286 |
|
| Tycho2 |
0039-00165-1 |
|
Gaia DR2 |
2501634595255561600 |
|
HD |
15030 |
|
BD |
BD+00 396 |
|
| Distance |
159.24 |
|
Distance ly |
519.44 |
|
ORBITAL ELEMENTS
| Period (P) | 600y | |
Periastron (T) | 2002.5y | |
Semi-major axis (a) | 0.674a | |
| Eccentricity (e) | 0.64 | |
Inclination (i) | 50° | |
Longitude of periastron (ω) | 237.4° | |
| Node (Ω) | 63.4° | |
Notes | | |
Reference | Tok2019c | |
| Equinox | | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
279.4 |
0.200 |
| 2001 |
282.9 |
0.194 |
| 2002 |
286.6 |
0.188 |
| 2003 |
290.5 |
0.183 |
| 2004 |
294.7 |
0.178 |
| 2005 |
299.0 |
0.174 |
| 2006 |
303.6 |
0.170 |
| 2007 |
308.3 |
0.167 |
| 2008 |
313.2 |
0.165 |
| 2009 |
318.1 |
0.164 |
| 2010 |
323.1 |
0.164 |
| 2011 |
328.1 |
0.165 |
| 2012 |
333.1 |
0.166 |
| 2013 |
337.9 |
0.168 |
| 2014 |
342.6 |
0.172 |
| 2015 |
347.0 |
0.176 |
| 2016 |
351.3 |
0.180 |
| 2017 |
355.3 |
0.186 |
| 2018 |
359.1 |
0.192 |
| 2019 |
2.6 |
0.198 |
| 2020 |
5.9 |
0.205 |
| 2021 |
9.0 |
0.212 |
| 2022 |
11.9 |
0.220 |
| 2023 |
14.6 |
0.228 |
| 2024 |
17.1 |
0.236 |
| 2025 |
19.4 |
0.244 |
| 2026 |
21.6 |
0.252 |
| 2027 |
23.7 |
0.260 |
| 2028 |
25.6 |
0.269 |
| 2029 |
27.4 |
0.277 |
| 2030 |
29.1 |
0.286 |
|
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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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