10419-7811 HDS 1530
10h 41m 54.45s -78° 11' 03.3" P.A. 51.00 sep 0.3 mag 10.31,11.08 Sp K5V dist. 47.62 pc (155.34 l.y.)
Coord 2000 |
10419-7811 |
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Discov num |
HDS1530 |
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Comp |
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Coord arcsec 2000 |
10 41 54.45 -78 11 03.3 |
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Date first |
1991 |
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Date last |
2021 |
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Obs |
14 |
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Pa first |
84 |
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Pa last |
51 |
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P.A. Now (θ) |
59.4° |
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Sep first |
0.4 |
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Sep last |
0.263 |
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Sep. Now (ρ) |
0.292" |
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Mag pri |
10.31 |
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Mag sec |
11.08 |
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delta mag (ΔM) |
0.77 |
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Spectral class |
K5V (yellow-orange) |
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Pri motion ra |
-140 |
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Sec motion ra |
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Pri motion dec |
+102 |
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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
Constellation |
Chamaeleon |
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HIP |
52351 |
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Tycho2 |
9414-00744-1 |
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Gaia DR2 |
5200920901121351040 |
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CD |
CD-77 464 |
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Distance |
47.62 |
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Distance ly |
155.34 |
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ORBITAL ELEMENTS
Period (P) | 39.07y | ± 0.67 |
Periastron (T) | 2007.88y | ± 0.1 |
Semi-major axis (a) | 0.267a | ± 0.004 |
Eccentricity (e) | 0.547 | ± 0.008 |
Inclination (i) | 50.2° | ± 0.7 |
Longitude of periastron (ω) | 132.6° | ± 1.1 |
Node (Ω) | 109.7° | ± 1.5 |
Notes | | |
Reference | Tok2019c | |
Equinox | | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
109.1 |
0.300 |
2001 |
113.3 |
0.278 |
2002 |
118.3 |
0.251 |
2003 |
124.7 |
0.220 |
2004 |
133.4 |
0.183 |
2005 |
147.1 |
0.141 |
2006 |
171.9 |
0.102 |
2007 |
216.2 |
0.084 |
2008 |
259.0 |
0.103 |
2009 |
284.8 |
0.131 |
2010 |
302.6 |
0.149 |
2011 |
317.4 |
0.158 |
2012 |
330.9 |
0.164 |
2013 |
343.5 |
0.170 |
2014 |
355.3 |
0.176 |
2015 |
6.1 |
0.185 |
2016 |
15.9 |
0.195 |
2017 |
24.6 |
0.208 |
2018 |
32.2 |
0.221 |
2019 |
39.0 |
0.235 |
2020 |
45.0 |
0.250 |
2021 |
50.3 |
0.264 |
2022 |
55.1 |
0.279 |
2023 |
59.4 |
0.292 |
2024 |
63.4 |
0.305 |
2025 |
67.0 |
0.317 |
2026 |
70.4 |
0.328 |
2027 |
73.6 |
0.337 |
2028 |
76.6 |
0.345 |
2029 |
79.5 |
0.352 |
2030 |
82.3 |
0.357 |
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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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