08462-1422 HU 120 (HD 74861)
08h 46m 09.03s -14° 22' 04.1" P.A. 322.00 sep 0.4 mag 9.19,9.21 Sp F8V dist. 85.98 pc (280.47 l.y.)
| Coord 2000 |
08462-1422 |
|
Discov num |
HU 120 |
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Comp |
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Coord arcsec 2000 |
08 46 09.03 -14 22 04.1 |
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| Date first |
1900 |
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Date last |
2014 |
|
Obs |
32 |
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| Pa first |
61 |
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Pa last |
322.2 |
|
P.A. Now (θ) |
333.1° |
|
| Sep first |
0.5 |
|
Sep last |
0.441 |
|
Sep. Now (ρ) |
0.475" |
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| Mag pri |
9.19 |
|
Mag sec |
9.21 |
|
delta mag (ΔM) |
0.02 |
|
Spectral class |
F8V (yellow-white) |
|
| Pri motion ra |
+129 |
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Sec motion ra |
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| Pri motion dec |
-163 |
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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 74861 |
|
Constellation |
Hydra |
|
SAO |
154618 |
|
HIP |
43038 |
|
| Tycho2 |
5454-00549-1 |
|
HD |
74861 |
|
ADS |
6989 |
|
BD |
BD-13 2670 |
|
| Distance |
85.98 |
|
Distance ly |
280.47 |
|
ORBITAL ELEMENTS
| Period (P) | 197.6y | |
Periastron (T) | 1983.19y | |
Semi-major axis (a) | 0.475a | |
| Eccentricity (e) | 0.375 | |
Inclination (i) | 45.6° | |
Longitude of periastron (ω) | 82.5° | |
| Node (Ω) | 140.2° | |
Notes | | |
Reference | Hrt2010a | |
| Equinox | 2000 | |
Last observation | 2009 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
295.8 |
0.324 |
| 2001 |
298.3 |
0.334 |
| 2002 |
300.6 |
0.343 |
| 2003 |
302.8 |
0.353 |
| 2004 |
304.9 |
0.362 |
| 2005 |
306.9 |
0.370 |
| 2006 |
308.8 |
0.379 |
| 2007 |
310.6 |
0.387 |
| 2008 |
312.3 |
0.395 |
| 2009 |
314.0 |
0.402 |
| 2010 |
315.6 |
0.409 |
| 2011 |
317.2 |
0.416 |
| 2012 |
318.7 |
0.423 |
| 2013 |
320.2 |
0.429 |
| 2014 |
321.6 |
0.435 |
| 2015 |
323.0 |
0.441 |
| 2016 |
324.4 |
0.446 |
| 2017 |
325.7 |
0.451 |
| 2018 |
327.0 |
0.456 |
| 2019 |
328.2 |
0.460 |
| 2020 |
329.5 |
0.464 |
| 2021 |
330.7 |
0.468 |
| 2022 |
331.9 |
0.472 |
| 2023 |
333.1 |
0.475 |
| 2024 |
334.3 |
0.478 |
| 2025 |
335.5 |
0.481 |
| 2026 |
336.6 |
0.484 |
| 2027 |
337.7 |
0.486 |
| 2028 |
338.9 |
0.488 |
| 2029 |
340.0 |
0.491 |
| 2030 |
341.1 |
0.492 |
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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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