23431+1150 A 1242 (HD 222718)
23h 43m 06.08s +11° 50' 04.4" P.A. 339.00 sep 1.0 mag 9.37,9.69 Sp G5 dist. 86.51 pc (282.2 l.y.)
Coord 2000 |
23431+1150 |
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Discov num |
A 1242 |
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Comp |
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Coord arcsec 2000 |
23 43 06.08 +11 50 04.4 |
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Date first |
1905 |
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Date last |
2016 |
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Obs |
83 |
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Pa first |
266 |
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Pa last |
339.3 |
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P.A. Now (θ) |
339.3° |
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Sep first |
0.5 |
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Sep last |
1.007 |
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Sep. Now (ρ) |
1.007" |
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Mag pri |
9.37 |
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Mag sec |
9.69 |
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delta mag (ΔM) |
0.32 |
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Spectral class |
G5 (yellow) |
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Pri motion ra |
+102 |
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Sec motion ra |
+102 |
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Pri motion dec |
-002 |
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Sec motion dec |
-002 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 222718 |
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Constellation |
Pegasus |
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SAO |
108786 |
|
HIP |
116995 |
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Tycho2 |
1173-00045-1 |
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Gaia DR2 |
2763655225542686336 |
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HD |
222718 |
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ADS |
16951 |
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BD |
BD+11 5045 |
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Distance |
86.51 |
|
Distance ly |
282.2 |
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ORBITAL ELEMENTS
Period (P) | 524.2482y | ± 262.7605 |
Periastron (T) | 2057.3952y | ± 19.0012 |
Semi-major axis (a) | 2.02107a | ± 1.19078 |
Eccentricity (e) | 0.74167 | ± 0.20557 |
Inclination (i) | 79.074° | ± 6.636 |
Longitude of periastron (ω) | 252.589° | ± 20.581 |
Node (Ω) | 170.617° | ± 3.954 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
333.0 |
0.966 |
2001 |
333.4 |
0.970 |
2002 |
333.7 |
0.973 |
2003 |
334.1 |
0.976 |
2004 |
334.5 |
0.979 |
2005 |
334.9 |
0.982 |
2006 |
335.2 |
0.985 |
2007 |
335.6 |
0.988 |
2008 |
336.0 |
0.990 |
2009 |
336.3 |
0.992 |
2010 |
336.7 |
0.994 |
2011 |
337.0 |
0.995 |
2012 |
337.4 |
0.997 |
2013 |
337.8 |
0.998 |
2014 |
338.1 |
0.998 |
2015 |
338.5 |
0.999 |
2016 |
338.8 |
0.999 |
2017 |
339.2 |
0.998 |
2018 |
339.6 |
0.998 |
2019 |
339.9 |
0.997 |
2020 |
340.3 |
0.995 |
2021 |
340.6 |
0.993 |
2022 |
341.0 |
0.991 |
2023 |
341.4 |
0.988 |
2024 |
341.7 |
0.985 |
2025 |
342.1 |
0.981 |
2026 |
342.5 |
0.977 |
2027 |
342.8 |
0.972 |
2028 |
343.2 |
0.966 |
2029 |
343.6 |
0.960 |
2030 |
344.0 |
0.952 |
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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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