22109+4211 A 2494
22h 10m 54.88s +42° 10' 48.6" P.A. 7.00 sep 0.2 mag 9.90,9.90 Sp G0
| Coord 2000 |
22109+4211 |
|
Discov num |
A 2494 |
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Comp |
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Coord arcsec 2000 |
22 10 54.88 +42 10 48.6 |
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| Date first |
1912 |
|
Date last |
2012 |
|
Obs |
25 |
|
| Pa first |
318 |
|
Pa last |
7.1 |
|
P.A. Now (θ) |
7.1° |
|
| Sep first |
0.2 |
|
Sep last |
0.224 |
|
Sep. Now (ρ) |
0.224" |
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| Mag pri |
9.90 |
|
Mag sec |
9.90 |
|
delta mag (ΔM) |
0 |
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Spectral class |
G0 (yellow) |
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| Pri motion ra |
+030 |
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Sec motion ra |
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| Pri motion dec |
-017 |
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Sec motion dec |
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| Notes |
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Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Lacerta |
|
Tycho2 |
3207-01721-1 |
|
Gaia DR2 |
1958335457247249536 |
|
ADS |
15701 |
|
ORBITAL ELEMENTS
| Period (P) | 142y | |
Periastron (T) | 2029.9y | |
Semi-major axis (a) | 0.29a | |
| Eccentricity (e) | 0.94 | |
Inclination (i) | 68.7° | |
Longitude of periastron (ω) | 291.1° | |
| Node (Ω) | 212.1° | |
Notes | | |
Reference | FMR2018c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
2.2 |
0.267 |
| 2001 |
2.6 |
0.265 |
| 2002 |
3.0 |
0.262 |
| 2003 |
3.4 |
0.259 |
| 2004 |
3.8 |
0.256 |
| 2005 |
4.2 |
0.253 |
| 2006 |
4.6 |
0.250 |
| 2007 |
5.0 |
0.246 |
| 2008 |
5.5 |
0.243 |
| 2009 |
5.9 |
0.239 |
| 2010 |
6.4 |
0.235 |
| 2011 |
6.9 |
0.230 |
| 2012 |
7.4 |
0.226 |
| 2013 |
7.9 |
0.221 |
| 2014 |
8.5 |
0.216 |
| 2015 |
9.1 |
0.210 |
| 2016 |
9.7 |
0.204 |
| 2017 |
10.3 |
0.198 |
| 2018 |
11.0 |
0.191 |
| 2019 |
11.8 |
0.184 |
| 2020 |
12.6 |
0.176 |
| 2021 |
13.5 |
0.168 |
| 2022 |
14.5 |
0.159 |
| 2023 |
15.6 |
0.149 |
| 2024 |
16.9 |
0.138 |
| 2025 |
18.4 |
0.125 |
| 2026 |
20.3 |
0.111 |
| 2027 |
22.8 |
0.094 |
| 2028 |
26.7 |
0.073 |
| 2029 |
34.8 |
0.043 |
| 2030 |
191.8 |
0.014 |
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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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