23020+4800 A 194 (HD 217712)
23h 01m 57.12s +47° 59' 54.8" P.A. 285.00 sep 0.2 mag 8.68,8.83 Sp A0 dist. 189.75 pc (618.96 l.y.)
| Coord 2000 |
23020+4800 |
|
Discov num |
A 194 |
|
Comp |
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Coord arcsec 2000 |
23 01 57.12 +47 59 54.8 |
|
| Date first |
1900 |
|
Date last |
2014 |
|
Obs |
33 |
|
| Pa first |
98 |
|
Pa last |
284.8 |
|
P.A. Now (θ) |
168.8° |
|
| Sep first |
0.2 |
|
Sep last |
0.179 |
|
Sep. Now (ρ) |
0.02" |
|
| Mag pri |
8.68 |
|
Mag sec |
8.83 |
|
delta mag (ΔM) |
0.15 |
|
Spectral class |
A0 (white) |
|
| Pri motion ra |
+022 |
|
Sec motion ra |
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|
| Pri motion dec |
+013 |
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Sec motion dec |
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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 217712 |
|
Constellation |
Andromeda |
|
SAO |
52611 |
|
HIP |
113729 |
|
| Tycho2 |
3626-01263-1 |
|
Gaia DR2 |
1984537678333679616 |
|
HD |
217712 |
|
ADS |
16457 |
|
| BD |
BD+47 4017 |
|
Distance |
189.75 |
|
Distance ly |
618.96 |
|
ORBITAL ELEMENTS
| Period (P) | 104.28y | |
Periastron (T) | 1990.26y | |
Semi-major axis (a) | 0.206a | |
| Eccentricity (e) | 0.079 | |
Inclination (i) | 94.7° | |
Longitude of periastron (ω) | 151.6° | |
| Node (Ω) | 108° | |
Notes | n | |
Reference | Doc2017e | |
| Equinox | 2000 | |
Last observation | 2008 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
287.1 |
0.190 |
| 2001 |
286.8 |
0.187 |
| 2002 |
286.4 |
0.184 |
| 2003 |
286.1 |
0.180 |
| 2004 |
285.7 |
0.176 |
| 2005 |
285.3 |
0.171 |
| 2006 |
284.9 |
0.164 |
| 2007 |
284.4 |
0.158 |
| 2008 |
283.9 |
0.150 |
| 2009 |
283.3 |
0.142 |
| 2010 |
282.7 |
0.134 |
| 2011 |
282.0 |
0.125 |
| 2012 |
281.2 |
0.116 |
| 2013 |
280.2 |
0.106 |
| 2014 |
279.0 |
0.095 |
| 2015 |
277.5 |
0.085 |
| 2016 |
275.6 |
0.074 |
| 2017 |
273.1 |
0.063 |
| 2018 |
269.5 |
0.052 |
| 2019 |
264.0 |
0.042 |
| 2020 |
254.7 |
0.031 |
| 2021 |
237.4 |
0.022 |
| 2022 |
205.3 |
0.018 |
| 2023 |
168.8 |
0.020 |
| 2024 |
146.8 |
0.028 |
| 2025 |
135.4 |
0.038 |
| 2026 |
128.9 |
0.049 |
| 2027 |
124.7 |
0.060 |
| 2028 |
121.9 |
0.070 |
| 2029 |
119.8 |
0.081 |
| 2030 |
118.2 |
0.092 |
|
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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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