08474-1703 BU 586 (HD 75098)
08h 47m 21.48s -17° 03' 10.3" P.A. 232.00 sep 0.3 mag 7.10,7.73 Sp G0+A2 dist. 189.04 pc (616.65 l.y.)
| Coord 2000 |
08474-1703 |
|
Discov num |
BU 586 |
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Comp |
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Coord arcsec 2000 |
08 47 21.48 -17 03 10.3 |
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| Date first |
1878 |
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Date last |
2018 |
|
Obs |
24 |
|
| Pa first |
53 |
|
Pa last |
231.6 |
|
P.A. Now (θ) |
231.6° |
|
| Sep first |
0.8 |
|
Sep last |
0.266 |
|
Sep. Now (ρ) |
0.266" |
|
| Mag pri |
7.10 |
|
Mag sec |
7.73 |
|
delta mag (ΔM) |
0.63 |
|
Spectral class |
G0+A2 (yellow/white) |
|
| Pri motion ra |
-015 |
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Sec motion ra |
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| Pri motion dec |
-008 |
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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 75098 |
|
Constellation |
Hydra |
|
SAO |
154636 |
|
HIP |
43152 |
|
| Tycho2 |
6016-02968-1 |
|
Gaia DR2 |
5709058447549378304 |
|
HD |
75098 |
|
GC |
12131 |
|
| ADS |
6999 |
|
BD |
BD-16 2589 |
|
Distance |
189.04 |
|
Distance ly |
616.65 |
|
ORBITAL ELEMENTS
| Period (P) | 442.24y | |
Periastron (T) | 2009.74y | |
Semi-major axis (a) | 0.538a | |
| Eccentricity (e) | 0.529 | |
Inclination (i) | 63.9° | |
Longitude of periastron (ω) | 317.3° | |
| Node (Ω) | 239.7° | |
Notes | | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
186.0 |
0.138 |
| 2001 |
190.4 |
0.143 |
| 2002 |
194.6 |
0.148 |
| 2003 |
198.4 |
0.155 |
| 2004 |
202.0 |
0.161 |
| 2005 |
205.2 |
0.168 |
| 2006 |
208.2 |
0.175 |
| 2007 |
211.0 |
0.182 |
| 2008 |
213.6 |
0.189 |
| 2009 |
216.0 |
0.196 |
| 2010 |
218.2 |
0.203 |
| 2011 |
220.2 |
0.210 |
| 2012 |
222.2 |
0.216 |
| 2013 |
224.0 |
0.223 |
| 2014 |
225.7 |
0.229 |
| 2015 |
227.3 |
0.235 |
| 2016 |
228.9 |
0.241 |
| 2017 |
230.4 |
0.247 |
| 2018 |
231.8 |
0.252 |
| 2019 |
233.1 |
0.257 |
| 2020 |
234.4 |
0.262 |
| 2021 |
235.7 |
0.266 |
| 2022 |
236.9 |
0.270 |
| 2023 |
238.1 |
0.274 |
| 2024 |
239.3 |
0.278 |
| 2025 |
240.4 |
0.281 |
| 2026 |
241.5 |
0.284 |
| 2027 |
242.6 |
0.286 |
| 2028 |
243.6 |
0.289 |
| 2029 |
244.7 |
0.291 |
| 2030 |
245.7 |
0.293 |
|
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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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