22302+2228 HU 388 (HD 213315)
22h 30m 14.53s +22° 28' 00.0" P.A. 66.00 sep 0.6 mag 8.48,9.10 Sp F0 dist. 142.05 pc (463.37 l.y.)
| Coord 2000 |
22302+2228 |
|
Discov num |
HU 388 |
|
Comp |
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|
Coord arcsec 2000 |
22 30 14.53 +22 28 00.0 |
|
| Date first |
1901 |
|
Date last |
2015 |
|
Obs |
105 |
|
| Pa first |
141 |
|
Pa last |
66.3 |
|
P.A. Now (θ) |
66.3° |
|
| Sep first |
0.2 |
|
Sep last |
0.61 |
|
Sep. Now (ρ) |
0.61" |
|
| Mag pri |
8.48 |
|
Mag sec |
9.10 |
|
delta mag (ΔM) |
0.62 |
|
Spectral class |
F0 (yellow-white) |
|
| Pri motion ra |
+022 |
|
Sec motion ra |
+022 |
|
| Pri motion dec |
-022 |
|
Sec motion dec |
-022 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 213315 |
|
Constellation |
Pegasus |
|
SAO |
90555 |
|
HIP |
111082 |
|
| Tycho2 |
1707-01349-1 |
|
HD |
213315 |
|
ADS |
15992 |
|
BD |
BD+21 4770 |
|
| Distance |
142.05 |
|
Distance ly |
463.37 |
|
ORBITAL ELEMENTS
| Period (P) | 535y | |
Periastron (T) | 1934.36y | |
Semi-major axis (a) | 0.518a | |
| Eccentricity (e) | 0.827 | |
Inclination (i) | 31.5° | |
Longitude of periastron (ω) | 265° | |
| Node (Ω) | 8.8° | |
Notes | n | |
Reference | Doc2008c | |
| Equinox | 2000 | |
Last observation | 2005 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
55.9 |
0.483 |
| 2001 |
56.3 |
0.487 |
| 2002 |
56.7 |
0.491 |
| 2003 |
57.0 |
0.495 |
| 2004 |
57.4 |
0.499 |
| 2005 |
57.7 |
0.502 |
| 2006 |
58.1 |
0.506 |
| 2007 |
58.4 |
0.510 |
| 2008 |
58.7 |
0.514 |
| 2009 |
59.1 |
0.517 |
| 2010 |
59.4 |
0.521 |
| 2011 |
59.7 |
0.525 |
| 2012 |
60.0 |
0.528 |
| 2013 |
60.3 |
0.532 |
| 2014 |
60.6 |
0.535 |
| 2015 |
60.9 |
0.539 |
| 2016 |
61.2 |
0.542 |
| 2017 |
61.5 |
0.545 |
| 2018 |
61.8 |
0.549 |
| 2019 |
62.1 |
0.552 |
| 2020 |
62.4 |
0.555 |
| 2021 |
62.6 |
0.559 |
| 2022 |
62.9 |
0.562 |
| 2023 |
63.2 |
0.565 |
| 2024 |
63.5 |
0.568 |
| 2025 |
63.7 |
0.571 |
| 2026 |
64.0 |
0.575 |
| 2027 |
64.2 |
0.578 |
| 2028 |
64.5 |
0.581 |
| 2029 |
64.8 |
0.584 |
| 2030 |
65.0 |
0.587 |
|
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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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