00321-1218 HDS 71 (HD 2893)
00h 32m 07.04s -12° 17' 42.1" P.A. 282.00 sep 0.3 mag 8.97,9.46 Sp G1V dist. 69.11 pc (225.44 l.y.)
| Coord 2000 |
00321-1218 |
|
Discov num |
HDS 71 |
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Comp |
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Coord arcsec 2000 |
00 32 07.04 -12 17 42.1 |
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| Date first |
1991 |
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Date last |
2021 |
|
Obs |
19 |
|
| Pa first |
23 |
|
Pa last |
281.9 |
|
P.A. Now (θ) |
281.9° |
|
| Sep first |
0.1 |
|
Sep last |
0.254 |
|
Sep. Now (ρ) |
0.254" |
|
| Mag pri |
8.97 |
|
Mag sec |
9.46 |
|
delta mag (ΔM) |
0.49 |
|
Spectral class |
G1V (yellow) |
|
| Pri motion ra |
+049 |
|
Sec motion ra |
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| Pri motion dec |
-027 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 2893 |
|
Constellation |
Cetus |
|
SAO |
147326 |
|
HIP |
2532 |
|
| Tycho2 |
5271-00803-1 |
|
HD |
2893 |
|
BD |
BD-13 89 |
|
Distance |
69.11 |
|
| Distance ly |
225.44 |
|
ORBITAL ELEMENTS
| Period (P) | 57.943y | ± 1.966 |
Periastron (T) | 2034.432y | ± 0.95 |
Semi-major axis (a) | 0.2666a | ± 0.0038 |
| Eccentricity (e) | 0.233 | ± 0.096 |
Inclination (i) | 132.3° | ± 7.9 |
Longitude of periastron (ω) | 325.3° | ± 21 |
| Node (Ω) | 126.6° | ± 9.7 |
Notes | | |
Reference | Cve2014 | |
| Equinox | 2000 | |
Last observation | 2008 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
352.3 |
0.253 |
| 2001 |
348.0 |
0.262 |
| 2002 |
343.9 |
0.271 |
| 2003 |
340.1 |
0.280 |
| 2004 |
336.5 |
0.288 |
| 2005 |
333.1 |
0.295 |
| 2006 |
329.9 |
0.301 |
| 2007 |
326.7 |
0.307 |
| 2008 |
323.7 |
0.311 |
| 2009 |
320.8 |
0.315 |
| 2010 |
317.9 |
0.317 |
| 2011 |
315.0 |
0.317 |
| 2012 |
312.1 |
0.317 |
| 2013 |
309.2 |
0.315 |
| 2014 |
306.3 |
0.311 |
| 2015 |
303.2 |
0.307 |
| 2016 |
300.1 |
0.300 |
| 2017 |
296.8 |
0.292 |
| 2018 |
293.3 |
0.283 |
| 2019 |
289.6 |
0.273 |
| 2020 |
285.5 |
0.261 |
| 2021 |
281.0 |
0.247 |
| 2022 |
276.0 |
0.233 |
| 2023 |
270.4 |
0.218 |
| 2024 |
263.9 |
0.203 |
| 2025 |
256.3 |
0.188 |
| 2026 |
247.5 |
0.174 |
| 2027 |
237.3 |
0.163 |
| 2028 |
225.7 |
0.154 |
| 2029 |
213.0 |
0.149 |
| 2030 |
199.9 |
0.149 |
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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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