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 |
|
Discov num |
A 1242 |
|
Comp |
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|
Coord arcsec 2000 |
23 43 06.08 +11 50 04.4 |
|
| Date first |
1905 |
|
Date last |
2016 |
|
Obs |
83 |
|
| Pa first |
266 |
|
Pa last |
339.3 |
|
P.A. Now (θ) |
339.3° |
|
| Sep first |
0.5 |
|
Sep last |
1.007 |
|
Sep. Now (ρ) |
1.007" |
|
| Mag pri |
9.37 |
|
Mag sec |
9.69 |
|
delta mag (ΔM) |
0.32 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
+102 |
|
Sec motion ra |
+102 |
|
| Pri motion dec |
-002 |
|
Sec motion dec |
-002 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 222718 |
|
Constellation |
Pegasus |
|
SAO |
108786 |
|
HIP |
116995 |
|
| Tycho2 |
1173-00045-1 |
|
Gaia DR2 |
2763655225542686336 |
|
HD |
222718 |
|
ADS |
16951 |
|
| BD |
BD+11 5045 |
|
Distance |
86.51 |
|
Distance ly |
282.2 |
|
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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