00495+4404 HDS 109 (HD 4712)
00h 49m 32.74s +44° 03' 33.8" P.A. 136.00 sep 0.2 mag 8.02,10.32 Sp G0 dist. 67.7 pc (220.84 l.y.)
| Coord 2000 |
00495+4404 |
|
Discov num |
HDS 109 |
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Comp |
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Coord arcsec 2000 |
00 49 32.74 +44 03 33.8 |
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| Date first |
1991 |
|
Date last |
2013 |
|
Obs |
19 |
|
| Pa first |
85 |
|
Pa last |
136.1 |
|
P.A. Now (θ) |
110° |
|
| Sep first |
0.3 |
|
Sep last |
0.191 |
|
Sep. Now (ρ) |
0.36" |
|
| Mag pri |
8.02 |
|
Mag sec |
10.32 |
|
delta mag (ΔM) |
2.3 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
-070 |
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Sec motion ra |
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| Pri motion dec |
-069 |
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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 4712 |
|
Constellation |
Andromeda |
|
SAO |
36695 |
|
HIP |
3857 |
|
| Tycho2 |
2809-01555-1 |
|
Gaia DR2 |
375984293246567296 |
|
HD |
4712 |
|
BD |
BD+43 159 |
|
| Distance |
67.7 |
|
Distance ly |
220.84 |
|
ORBITAL ELEMENTS
| Period (P) | 46.64y | |
Periastron (T) | 2009.69y | |
Semi-major axis (a) | 0.253a | |
| Eccentricity (e) | 0.752 | |
Inclination (i) | 133.5° | |
Longitude of periastron (ω) | 227.5° | |
| Node (Ω) | 131.1° | |
Notes | | |
Reference | FMR2013a | |
| Equinox | 2000 | |
Last observation | 2012 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
62.5 |
0.236 |
| 2001 |
58.2 |
0.220 |
| 2002 |
53.2 |
0.203 |
| 2003 |
47.2 |
0.185 |
| 2004 |
40.0 |
0.167 |
| 2005 |
31.0 |
0.149 |
| 2006 |
19.5 |
0.131 |
| 2007 |
4.4 |
0.114 |
| 2008 |
344.0 |
0.096 |
| 2009 |
313.3 |
0.074 |
| 2010 |
245.8 |
0.047 |
| 2011 |
173.9 |
0.078 |
| 2012 |
151.4 |
0.127 |
| 2013 |
141.0 |
0.168 |
| 2014 |
134.4 |
0.203 |
| 2015 |
129.7 |
0.232 |
| 2016 |
126.0 |
0.258 |
| 2017 |
122.9 |
0.280 |
| 2018 |
120.2 |
0.298 |
| 2019 |
117.8 |
0.315 |
| 2020 |
115.6 |
0.329 |
| 2021 |
113.6 |
0.341 |
| 2022 |
111.8 |
0.351 |
| 2023 |
110.0 |
0.360 |
| 2024 |
108.3 |
0.367 |
| 2025 |
106.7 |
0.372 |
| 2026 |
105.1 |
0.377 |
| 2027 |
103.5 |
0.380 |
| 2028 |
102.0 |
0.382 |
| 2029 |
100.4 |
0.382 |
| 2030 |
98.9 |
0.382 |
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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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