22268-4537 HU 1334 (HD 212648)
22h 26m 49.02s -45° 37' 08.3" P.A. 249.00 sep 0.3 mag 9.19,9.34 Sp F5IV/V dist. 151.98 pc (495.76 l.y.)
Coord 2000 |
22268-4537 |
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Discov num |
HU 1334 |
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Comp |
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Coord arcsec 2000 |
22 26 49.02 -45 37 08.3 |
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Date first |
1903 |
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Date last |
2008 |
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Obs |
26 |
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Pa first |
135 |
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Pa last |
248.7 |
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P.A. Now (θ) |
248.7° |
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Sep first |
0.5 |
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Sep last |
0.33 |
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Sep. Now (ρ) |
0.33" |
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Mag pri |
9.19 |
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Mag sec |
9.34 |
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delta mag (ΔM) |
0.15 |
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Spectral class |
F5IV/V (yellow-white) |
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Pri motion ra |
+045 |
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Sec motion ra |
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Pri motion dec |
-022 |
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Sec motion dec |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 212648 |
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Constellation |
Grus |
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SAO |
231141 |
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HIP |
110795 |
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Tycho2 |
8439-00163-1 |
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HD |
212648 |
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CD |
CD-4614317 |
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CP |
CP-4610406 |
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Distance |
151.98 |
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Distance ly |
495.76 |
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ORBITAL ELEMENTS
Period (P) | 405.2y | |
Periastron (T) | 1976y | |
Semi-major axis (a) | 0.551a | |
Eccentricity (e) | 0.643 | |
Inclination (i) | 149° | |
Longitude of periastron (ω) | 349° | |
Node (Ω) | 342.3° | |
Notes | | |
Reference | Hrt2013c | |
Equinox | 2000 | |
Last observation | 2008 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
266.2 |
0.276 |
2001 |
264.0 |
0.282 |
2002 |
261.8 |
0.287 |
2003 |
259.7 |
0.293 |
2004 |
257.6 |
0.299 |
2005 |
255.7 |
0.305 |
2006 |
253.8 |
0.311 |
2007 |
252.0 |
0.317 |
2008 |
250.3 |
0.323 |
2009 |
248.6 |
0.329 |
2010 |
247.0 |
0.335 |
2011 |
245.5 |
0.341 |
2012 |
244.0 |
0.347 |
2013 |
242.5 |
0.354 |
2014 |
241.1 |
0.360 |
2015 |
239.8 |
0.366 |
2016 |
238.5 |
0.372 |
2017 |
237.2 |
0.378 |
2018 |
236.0 |
0.385 |
2019 |
234.8 |
0.391 |
2020 |
233.7 |
0.397 |
2021 |
232.6 |
0.403 |
2022 |
231.5 |
0.409 |
2023 |
230.5 |
0.416 |
2024 |
229.5 |
0.422 |
2025 |
228.5 |
0.428 |
2026 |
227.5 |
0.434 |
2027 |
226.6 |
0.440 |
2028 |
225.7 |
0.446 |
2029 |
224.8 |
0.452 |
2030 |
224.0 |
0.458 |
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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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