08315-1935 I 489 (HD 72310)
08h 31m 30.94s -19° 34' 38.8" P.A. 280.00 sep 0.4 mag 5.82,6.67 Sp A0V dist. 105.82 pc (345.18 l.y.)
| Coord 2000 |
08315-1935 |
|
Discov num |
I 489 |
|
Comp |
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Coord arcsec 2000 |
08 31 30.94 -19 34 38.8 |
|
| Date first |
1910 |
|
Date last |
2021 |
|
Obs |
63 |
|
| Pa first |
110 |
|
Pa last |
279.9 |
|
P.A. Now (θ) |
279.9° |
|
| Sep first |
0.6 |
|
Sep last |
0.367 |
|
Sep. Now (ρ) |
0.367" |
|
| Mag pri |
5.82 |
|
Mag sec |
6.67 |
|
delta mag (ΔM) |
0.85 |
|
Spectral class |
A0V (white) |
|
| Pri motion ra |
-040 |
|
Sec motion ra |
|
|
| Pri motion dec |
-012 |
|
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 72310 |
|
Constellation |
Pyxis |
|
SAO |
154359 |
|
HIP |
41817 |
|
| Tycho2 |
6006-04297-1 |
|
HD |
72310 |
|
HR |
3367 |
|
GC |
11679 |
|
| ADS |
6862 |
|
BD |
BD-19 2438 |
|
Distance |
105.82 |
|
Distance ly |
345.18 |
|
ORBITAL ELEMENTS
| Period (P) | 261.06y | ± 15.48 |
Periastron (T) | 2005.97y | ± 7.48 |
Semi-major axis (a) | 0.504a | ± 0.007 |
| Eccentricity (e) | 0.241 | ± 0.01 |
Inclination (i) | 122.1° | ± 2.7 |
Longitude of periastron (ω) | 141° | ± 14.6 |
| Node (Ω) | 96.9° | ± 1.7 |
Notes | | |
Reference | Msn2009 | |
| Equinox | 2000 | |
Last observation | 2006 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
311.9 |
0.284 |
| 2001 |
309.7 |
0.291 |
| 2002 |
307.6 |
0.297 |
| 2003 |
305.6 |
0.304 |
| 2004 |
303.7 |
0.311 |
| 2005 |
301.9 |
0.317 |
| 2006 |
300.1 |
0.324 |
| 2007 |
298.4 |
0.330 |
| 2008 |
296.8 |
0.336 |
| 2009 |
295.2 |
0.342 |
| 2010 |
293.7 |
0.348 |
| 2011 |
292.3 |
0.354 |
| 2012 |
290.8 |
0.359 |
| 2013 |
289.5 |
0.364 |
| 2014 |
288.1 |
0.369 |
| 2015 |
286.8 |
0.374 |
| 2016 |
285.5 |
0.378 |
| 2017 |
284.3 |
0.382 |
| 2018 |
283.1 |
0.386 |
| 2019 |
281.8 |
0.389 |
| 2020 |
280.7 |
0.392 |
| 2021 |
279.5 |
0.395 |
| 2022 |
278.3 |
0.397 |
| 2023 |
277.2 |
0.399 |
| 2024 |
276.1 |
0.401 |
| 2025 |
275.0 |
0.403 |
| 2026 |
273.8 |
0.404 |
| 2027 |
272.7 |
0.405 |
| 2028 |
271.6 |
0.405 |
| 2029 |
270.5 |
0.406 |
| 2030 |
269.4 |
0.406 |
|
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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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