20162+1504 CHE 259 (HD 193216)
20h 16m 00.25s +15° 03' 54.8" P.A. 138.00 sep 16.5 mag 12.17,12.17 dist. 30.77 pc (100.37 l.y.)
| Coord 2000 |
20162+1504 |
|
Discov num |
CHE 259 |
|
Comp |
|
|
Coord arcsec 2000 |
20 16 00.25 +15 03 54.8 |
|
| Date first |
1910 |
|
Date last |
2015 |
|
Obs |
12 |
|
| Pa first |
139 |
|
Pa last |
138.4 |
|
P.A. Now (θ) |
138.4° |
|
| Sep first |
17.0 |
|
Sep last |
16.529 |
|
Sep. Now (ρ) |
16.529" |
|
| Mag pri |
12.17 |
|
Mag sec |
12.17 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
|
|
| Pri motion ra |
-004 |
|
Sec motion ra |
-003 |
|
| Pri motion dec |
-004 |
|
Sec motion dec |
+005 |
|
| Notes |
|
|
rPM=1.553
This double is not physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 193216 |
|
Spectr |
G5 |
|
Constellation |
Delphinus |
|
HIP |
99965 |
|
| Tycho2 |
3580-00583-1 |
|
Gaia DR2 |
1808250603928602752 |
|
HD |
193216 |
|
BD |
BD+49 3245 |
|
| Distance |
30.77 |
|
Distance ly |
100.37 |
|
ORBITAL ELEMENTS
| Period (P) | 418.77d | |
Periastron (T) | 50218d (1996.368y) | |
Semi-major axis (a) | 3.7m | ± 0.8 |
| Eccentricity (e) | 0.084 | |
Inclination (i) | 124.9° | ± 12.1 |
Longitude of periastron (ω) | 243° | |
| Node (Ω) | 174.1° | ± 8.6 |
Notes | n | |
Reference | Ren2013 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
206.4 |
0.003 |
| 2001-01-01 |
281.2 |
0.002 |
| 2002-01-01 |
338.6 |
0.003 |
| 2003-01-01 |
8.5 |
0.003 |
| 2004-01-01 |
49.2 |
0.003 |
| 2005-01-01 |
114.1 |
0.003 |
| 2006-01-01 |
154.1 |
0.004 |
| 2007-01-01 |
179.5 |
0.004 |
| 2008-01-01 |
215.1 |
0.003 |
| 2009-01-01 |
296.0 |
0.002 |
| 2010-01-01 |
344.4 |
0.003 |
| 2011-01-01 |
14.1 |
0.003 |
| 2012-01-01 |
59.8 |
0.002 |
| 2013-01-01 |
123.5 |
0.003 |
| 2014-01-01 |
158.9 |
0.004 |
| 2015-01-01 |
184.2 |
0.004 |
| 2016-01-01 |
225.7 |
0.002 |
| 2017-01-01 |
308.5 |
0.002 |
| 2018-01-01 |
349.8 |
0.003 |
| 2019-01-01 |
20.1 |
0.003 |
| 2020-01-01 |
71.4 |
0.002 |
| 2021-01-01 |
131.7 |
0.003 |
| 2022-01-01 |
163.5 |
0.004 |
| 2023-01-01 |
189.3 |
0.003 |
| 2024-01-01 |
238.7 |
0.002 |
| 2025-01-01 |
318.7 |
0.003 |
| 2026-01-01 |
354.9 |
0.004 |
| 2027-01-01 |
26.7 |
0.003 |
| 2028-01-01 |
83.6 |
0.002 |
| 2029-01-01 |
138.8 |
0.003 |
| 2030-01-01 |
167.9 |
0.004 |
|
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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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