23164+6407 BU 992 (HD 219633)
23h 16m 23.52s +64° 06' 58.5" P.A. 20.00 sep 0.3 mag 8.21,8.29 Sp F0 dist. 273.22 pc (891.24 l.y.)
| Coord 2000 |
23164+6407 |
|
Discov num |
BU 992 |
|
Comp |
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Coord arcsec 2000 |
23 16 23.52 +64 06 58.5 |
|
| Date first |
1880 |
|
Date last |
2008 |
|
Obs |
50 |
|
| Pa first |
171 |
|
Pa last |
19.5 |
|
P.A. Now (θ) |
19.5° |
|
| Sep first |
0.4 |
|
Sep last |
0.269 |
|
Sep. Now (ρ) |
0.269" |
|
| Mag pri |
8.21 |
|
Mag sec |
8.29 |
|
delta mag (ΔM) |
0.08 |
|
Spectral class |
F0 (yellow-white) |
|
| Pri motion ra |
+007 |
|
Sec motion ra |
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|
| Pri motion dec |
+008 |
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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 219633 |
|
Constellation |
Cepheus |
|
SAO |
20530 |
|
HIP |
114898 |
|
| Tycho2 |
4287-01100-1 |
|
Gaia DR2 |
2207791555849075584 |
|
HD |
219633 |
|
GC |
32402 |
|
| ADS |
16638 |
|
BD |
BD+63 1960 |
|
Distance |
273.22 |
|
Distance ly |
891.24 |
|
ORBITAL ELEMENTS
| Period (P) | 516.82y | |
Periastron (T) | 1880.81y | |
Semi-major axis (a) | 0.43a | |
| Eccentricity (e) | 0.365 | |
Inclination (i) | 122.67° | |
Longitude of periastron (ω) | 0.94° | |
| Node (Ω) | 171.29° | |
Notes | n | |
Reference | Val1981d | |
| Equinox | 2000 | |
Last observation | 1979 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
29.6 |
0.335 |
| 2001 |
29.1 |
0.338 |
| 2002 |
28.5 |
0.342 |
| 2003 |
28.0 |
0.345 |
| 2004 |
27.4 |
0.348 |
| 2005 |
26.9 |
0.351 |
| 2006 |
26.4 |
0.355 |
| 2007 |
25.9 |
0.358 |
| 2008 |
25.4 |
0.361 |
| 2009 |
24.9 |
0.364 |
| 2010 |
24.4 |
0.368 |
| 2011 |
23.9 |
0.371 |
| 2012 |
23.5 |
0.374 |
| 2013 |
23.0 |
0.377 |
| 2014 |
22.5 |
0.380 |
| 2015 |
22.1 |
0.383 |
| 2016 |
21.7 |
0.387 |
| 2017 |
21.2 |
0.390 |
| 2018 |
20.8 |
0.393 |
| 2019 |
20.4 |
0.396 |
| 2020 |
20.0 |
0.399 |
| 2021 |
19.6 |
0.402 |
| 2022 |
19.2 |
0.405 |
| 2023 |
18.8 |
0.408 |
| 2024 |
18.4 |
0.411 |
| 2025 |
18.0 |
0.414 |
| 2026 |
17.6 |
0.417 |
| 2027 |
17.3 |
0.420 |
| 2028 |
16.9 |
0.423 |
| 2029 |
16.6 |
0.426 |
| 2030 |
16.2 |
0.428 |
|
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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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