20577+2624 RAO 24 (HD 199598)
20h 57m 39.67s +26° 24' 18.2" P.A. 88.00 sep 0.8 mag 7.01,11.00 Sp F9V dist. 31.63 pc (103.18 l.y.)
Coord 2000 |
20577+2624 |
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Discov num |
RAO 24 |
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Comp |
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Coord arcsec 2000 |
20 57 39.67 +26 24 18.2 |
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Date first |
2001 |
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Date last |
2018 |
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Obs |
7 |
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Pa first |
332 |
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Pa last |
88.4 |
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P.A. Now (θ) |
88.4° |
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Sep first |
0.2 |
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Sep last |
0.794 |
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Sep. Now (ρ) |
0.794" |
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Mag pri |
7.01 |
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Mag sec |
11.00 |
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delta mag (ΔM) |
3.99 |
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Spectral class |
F9V (yellow-white) |
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Pri motion ra |
+267 |
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Sec motion ra |
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Pri motion dec |
+092 |
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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 199598 |
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Constellation |
Vulpecula |
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SAO |
89320 |
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HIP |
103455 |
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Tycho2 |
2180-01813-1 |
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Gaia DR2 |
1844639838900425472 |
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HD |
199598 |
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GC |
29256 |
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BD |
BD+25 4422 |
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Distance |
31.63 |
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Distance ly |
103.18 |
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ORBITAL ELEMENTS
Period (P) | 68.2y | ± 1.5 |
Periastron (T) | 2003.4771y | ± 0.0006 |
Semi-major axis (a) | 0.62a | ± 0.025 |
Eccentricity (e) | 0.774 | ± 0.004 |
Inclination (i) | 154.3° | ± 8.5 |
Longitude of periastron (ω) | 84.3° | ± 0.2 |
Node (Ω) | 326.7° | ± 2 |
Notes | n | |
Reference | Rbr2017a | |
Equinox | 2000 | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
350.6 |
0.335 |
2001 |
337.9 |
0.272 |
2002 |
317.1 |
0.203 |
2003 |
275.2 |
0.139 |
2004 |
207.3 |
0.139 |
2005 |
165.5 |
0.205 |
2006 |
145.1 |
0.276 |
2007 |
132.9 |
0.342 |
2008 |
124.4 |
0.400 |
2009 |
118.1 |
0.453 |
2010 |
113.0 |
0.501 |
2011 |
108.7 |
0.545 |
2012 |
105.1 |
0.585 |
2013 |
101.9 |
0.623 |
2014 |
99.1 |
0.657 |
2015 |
96.5 |
0.690 |
2016 |
94.2 |
0.719 |
2017 |
92.0 |
0.747 |
2018 |
90.0 |
0.773 |
2019 |
88.2 |
0.797 |
2020 |
86.4 |
0.820 |
2021 |
84.7 |
0.840 |
2022 |
83.1 |
0.859 |
2023 |
81.6 |
0.877 |
2024 |
80.1 |
0.893 |
2025 |
78.7 |
0.908 |
2026 |
77.3 |
0.922 |
2027 |
75.9 |
0.934 |
2028 |
74.6 |
0.945 |
2029 |
73.4 |
0.955 |
2030 |
72.1 |
0.964 |
2031 |
70.9 |
0.971 |
2032 |
69.6 |
0.977 |
2033 |
68.4 |
0.983 |
2034 |
67.2 |
0.987 |
2035 |
66.1 |
0.990 |
2036 |
64.9 |
0.992 |
2037 |
63.7 |
0.992 |
2038 |
62.5 |
0.992 |
2039 |
61.3 |
0.991 |
2040 |
60.2 |
0.988 |
2041 |
59.0 |
0.984 |
2042 |
57.8 |
0.980 |
2043 |
56.6 |
0.974 |
2044 |
55.3 |
0.967 |
2045 |
54.1 |
0.959 |
2046 |
52.8 |
0.950 |
2047 |
51.5 |
0.939 |
2048 |
50.2 |
0.928 |
2049 |
48.8 |
0.915 |
2050 |
47.4 |
0.901 |
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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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