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 |
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Discov num |
HU 388 |
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Comp |
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Coord arcsec 2000 |
22 30 14.53 +22 28 00.0 |
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Date first |
1901 |
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Date last |
2015 |
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Obs |
105 |
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Pa first |
141 |
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Pa last |
66.3 |
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P.A. Now (θ) |
66.3° |
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Sep first |
0.2 |
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Sep last |
0.61 |
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Sep. Now (ρ) |
0.61" |
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Mag pri |
8.48 |
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Mag sec |
9.10 |
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delta mag (ΔM) |
0.62 |
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Spectral class |
F0 (yellow-white) |
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Pri motion ra |
+022 |
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Sec motion ra |
+022 |
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Pri motion dec |
-022 |
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Sec motion dec |
-022 |
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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 213315 |
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Constellation |
Pegasus |
|
SAO |
90555 |
|
HIP |
111082 |
|
Tycho2 |
1707-01349-1 |
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HD |
213315 |
|
ADS |
15992 |
|
BD |
BD+21 4770 |
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Distance |
142.05 |
|
Distance ly |
463.37 |
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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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