10121+2118 A 2146 (HD 88417)
10h 12m 05.05s +21° 17' 54.6" P.A. 180.00 sep 0.1 mag 9.74,9.59 Sp F8 dist. 210.97 pc (688.18 l.y.)
| Coord 2000 |
10121+2118 |
|
Discov num |
A 2146 |
|
Comp |
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Coord arcsec 2000 |
10 12 05.05 +21 17 54.6 |
|
| Date first |
1910 |
|
Date last |
2013 |
|
Obs |
36 |
|
| Pa first |
180 |
|
Pa last |
179.9 |
|
P.A. Now (θ) |
179.9° |
|
| Sep first |
0.2 |
|
Sep last |
0.113 |
|
Sep. Now (ρ) |
0.113" |
|
| Mag pri |
9.74 |
|
Mag sec |
9.59 |
|
delta mag (ΔM) |
0.15 |
|
Spectral class |
F8 (yellow-white) |
|
| Pri motion ra |
-049 |
|
Sec motion ra |
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| Pri motion dec |
-057 |
|
Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 88417 |
|
Constellation |
Leo |
|
SAO |
81226 |
|
HIP |
49970 |
|
| Tycho2 |
1425-00805-1 |
|
Gaia DR2 |
628889834698184960 |
|
HD |
88417 |
|
ADS |
7677 |
|
| BD |
BD+22 2190 |
|
Distance |
210.97 |
|
Distance ly |
688.18 |
|
ORBITAL ELEMENTS
| Period (P) | 97y | |
Periastron (T) | 2002y | |
Semi-major axis (a) | 0.224a | |
| Eccentricity (e) | 0.255 | |
Inclination (i) | 33° | |
Longitude of periastron (ω) | 110° | |
| Node (Ω) | 33.1° | |
Notes | n | |
Reference | Hei2001 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
131.6 |
0.141 |
| 2001 |
139.1 |
0.142 |
| 2002 |
146.6 |
0.143 |
| 2003 |
153.8 |
0.146 |
| 2004 |
160.7 |
0.149 |
| 2005 |
167.4 |
0.153 |
| 2006 |
173.6 |
0.157 |
| 2007 |
179.5 |
0.162 |
| 2008 |
185.1 |
0.167 |
| 2009 |
190.4 |
0.171 |
| 2010 |
195.4 |
0.176 |
| 2011 |
200.2 |
0.181 |
| 2012 |
204.7 |
0.185 |
| 2013 |
209.0 |
0.189 |
| 2014 |
213.2 |
0.193 |
| 2015 |
217.2 |
0.196 |
| 2016 |
221.0 |
0.199 |
| 2017 |
224.8 |
0.202 |
| 2018 |
228.4 |
0.205 |
| 2019 |
232.0 |
0.207 |
| 2020 |
235.5 |
0.209 |
| 2021 |
238.9 |
0.211 |
| 2022 |
242.3 |
0.212 |
| 2023 |
245.6 |
0.214 |
| 2024 |
248.9 |
0.215 |
| 2025 |
252.1 |
0.216 |
| 2026 |
255.3 |
0.217 |
| 2027 |
258.5 |
0.218 |
| 2028 |
261.7 |
0.219 |
| 2029 |
264.8 |
0.220 |
| 2030 |
267.9 |
0.221 |
| 2031 |
271.0 |
0.221 |
| 2032 |
274.1 |
0.222 |
| 2033 |
277.1 |
0.223 |
| 2034 |
280.1 |
0.224 |
| 2035 |
283.2 |
0.225 |
| 2036 |
286.1 |
0.225 |
| 2037 |
289.1 |
0.226 |
| 2038 |
292.0 |
0.227 |
| 2039 |
295.0 |
0.228 |
| 2040 |
297.8 |
0.229 |
| 2041 |
300.7 |
0.230 |
| 2042 |
303.5 |
0.231 |
| 2043 |
306.4 |
0.232 |
| 2044 |
309.1 |
0.233 |
| 2045 |
311.9 |
0.235 |
| 2046 |
314.6 |
0.236 |
| 2047 |
317.3 |
0.237 |
| 2048 |
320.0 |
0.238 |
| 2049 |
322.6 |
0.240 |
| 2050 |
325.3 |
0.241 |
|
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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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