08494+0341 A 2899
08h 49m 21.20s +03° 41' 02.3" P.A. 231.00 sep 0.7 mag 8.20,13.70 Sp G5 dist. 35.44 pc (115.61 l.y.)
Coord 2000 |
08494+0341 |
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Discov num |
A 2899 |
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Comp |
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Coord arcsec 2000 |
08 49 21.20 +03 41 02.3 |
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Date first |
1914 |
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Date last |
2018 |
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Obs |
6 |
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Pa first |
356 |
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Pa last |
230.7 |
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P.A. Now (θ) |
230.7° |
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Sep first |
1.6 |
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Sep last |
0.725 |
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Sep. Now (ρ) |
0.725" |
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Mag pri |
8.20 |
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Mag sec |
13.70 |
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delta mag (ΔM) |
5.5 |
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Spectral class |
G5 (yellow) |
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Pri motion ra |
-273 |
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Sec motion ra |
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Pri motion dec |
-016 |
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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
Constellation |
Hydra |
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SAO |
117167 |
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HIP |
43304 |
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Tycho2 |
0216-00049-1 |
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Gaia DR2 |
581201571564630784 |
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HD |
75318 |
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ADS |
7022 |
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BD |
BD+04 2051 |
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Distance |
35.44 |
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Distance ly |
115.61 |
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ORBITAL ELEMENTS
Period (P) | 300y | |
Periastron (T) | 2123y | ± 51 |
Semi-major axis (a) | 1.53a | ± 0.19 |
Eccentricity (e) | 0.231 | ± 0.059 |
Inclination (i) | 107.8° | ± 3.6 |
Longitude of periastron (ω) | 250.4° | ± 39.9 |
Node (Ω) | 4° | ± 5.1 |
Notes | | |
Reference | Tok2016e | |
Equinox | 2000 | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
269.2 |
0.566 |
2001 |
266.6 |
0.568 |
2002 |
264.0 |
0.571 |
2003 |
261.4 |
0.574 |
2004 |
258.9 |
0.579 |
2005 |
256.4 |
0.584 |
2006 |
254.0 |
0.591 |
2007 |
251.7 |
0.598 |
2008 |
249.4 |
0.607 |
2009 |
247.1 |
0.616 |
2010 |
245.0 |
0.625 |
2011 |
242.9 |
0.636 |
2012 |
240.8 |
0.647 |
2013 |
238.9 |
0.659 |
2014 |
237.0 |
0.671 |
2015 |
235.2 |
0.684 |
2016 |
233.4 |
0.697 |
2017 |
231.7 |
0.711 |
2018 |
230.1 |
0.725 |
2019 |
228.5 |
0.740 |
2020 |
227.0 |
0.754 |
2021 |
225.6 |
0.770 |
2022 |
224.2 |
0.785 |
2023 |
222.9 |
0.800 |
2024 |
221.6 |
0.816 |
2025 |
220.4 |
0.832 |
2026 |
219.2 |
0.848 |
2027 |
218.0 |
0.864 |
2028 |
217.0 |
0.880 |
2029 |
215.9 |
0.897 |
2030 |
214.9 |
0.913 |
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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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