00550-5315 RST 23
00h 54m 58.45s -53° 14' 39.0" P.A. 326.00 sep 0.4 mag 10.50,10.80 Sp K0
Coord 2000 |
00550-5315 |
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Discov num |
RST 23 |
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Comp |
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Coord arcsec 2000 |
00 54 58.45 -53 14 39.0 |
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Date first |
1928 |
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Date last |
2019 |
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Obs |
6 |
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Pa first |
275 |
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Pa last |
326.1 |
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P.A. Now (θ) |
326.1° |
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Sep first |
0.3 |
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Sep last |
0.421 |
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Sep. Now (ρ) |
0.421" |
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Mag pri |
10.50 |
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Mag sec |
10.80 |
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delta mag (ΔM) |
0.3 |
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Spectral class |
K0 (yellow-orange) |
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Pri motion ra |
+107 |
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Sec motion ra |
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Pri motion dec |
-065 |
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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
ORBITAL ELEMENTS
Period (P) | 140y | ± 19 |
Periastron (T) | 1973.59y | ± 1.62 |
Semi-major axis (a) | 0.569a | ± 0.152 |
Eccentricity (e) | 0.85 | ± 0.09 |
Inclination (i) | 105.9° | ± 5.7 |
Longitude of periastron (ω) | 79.4° | ± 4.5 |
Node (Ω) | 182.3° | ± 5 |
Notes | | |
Reference | Tok2020e | |
Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
338.6 |
0.438 |
2001 |
338.0 |
0.439 |
2002 |
337.4 |
0.440 |
2003 |
336.8 |
0.441 |
2004 |
336.2 |
0.441 |
2005 |
335.5 |
0.441 |
2006 |
334.9 |
0.441 |
2007 |
334.3 |
0.441 |
2008 |
333.7 |
0.441 |
2009 |
333.1 |
0.440 |
2010 |
332.5 |
0.439 |
2011 |
331.8 |
0.438 |
2012 |
331.2 |
0.437 |
2013 |
330.6 |
0.435 |
2014 |
329.9 |
0.434 |
2015 |
329.3 |
0.432 |
2016 |
328.6 |
0.430 |
2017 |
328.0 |
0.428 |
2018 |
327.3 |
0.426 |
2019 |
326.7 |
0.424 |
2020 |
326.0 |
0.421 |
2021 |
325.3 |
0.419 |
2022 |
324.6 |
0.416 |
2023 |
323.9 |
0.413 |
2024 |
323.2 |
0.411 |
2025 |
322.5 |
0.408 |
2026 |
321.8 |
0.405 |
2027 |
321.0 |
0.402 |
2028 |
320.3 |
0.398 |
2029 |
319.5 |
0.395 |
2030 |
318.7 |
0.392 |
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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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