20403-5114 HU 1617 (HD 196537)
20h 40m 15.16s -51° 13' 45.7" P.A. 279.00 sep 0.2 mag 8.50,9.00 Sp F6/7V dist. 275.48 pc (898.62 l.y.)
Coord 2000 |
20403-5114 |
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Discov num |
HU 1617 |
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Comp |
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Coord arcsec 2000 |
20 40 15.16 -51 13 45.7 |
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Date first |
1914 |
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Date last |
2019 |
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Obs |
12 |
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Pa first |
124 |
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Pa last |
279.1 |
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P.A. Now (θ) |
279.1° |
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Sep first |
0.5 |
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Sep last |
0.172 |
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Sep. Now (ρ) |
0.172" |
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Mag pri |
8.50 |
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Mag sec |
9.00 |
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delta mag (ΔM) |
0.5 |
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Spectral class |
F6/7V (yellow-white) |
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Pri motion ra |
+030 |
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Sec motion ra |
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Pri motion dec |
-038 |
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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 196537 |
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Constellation |
Indus |
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SAO |
246682 |
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HIP |
102006 |
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Tycho2 |
8419-01332-1 |
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Gaia DR2 |
6474719896585017728 |
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HD |
196537 |
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CD |
CD-5112659 |
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CP |
CP-5111541 |
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Distance |
275.48 |
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Distance ly |
898.62 |
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ORBITAL ELEMENTS
Period (P) | 200y | |
Periastron (T) | 2058.84y | |
Semi-major axis (a) | 0.351a | |
Eccentricity (e) | 0.351 | |
Inclination (i) | 84.4° | |
Longitude of periastron (ω) | 248.1° | |
Node (Ω) | 111° | |
Notes | | |
Reference | Tok2021f | |
Equinox | 2000 | |
Last observation | 2019 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
275.6 |
0.145 |
2001 |
276.5 |
0.151 |
2002 |
277.4 |
0.158 |
2003 |
278.1 |
0.165 |
2004 |
278.8 |
0.172 |
2005 |
279.5 |
0.178 |
2006 |
280.1 |
0.185 |
2007 |
280.7 |
0.191 |
2008 |
281.2 |
0.197 |
2009 |
281.7 |
0.203 |
2010 |
282.2 |
0.209 |
2011 |
282.7 |
0.215 |
2012 |
283.1 |
0.221 |
2013 |
283.5 |
0.226 |
2014 |
283.9 |
0.232 |
2015 |
284.3 |
0.237 |
2016 |
284.6 |
0.242 |
2017 |
284.9 |
0.247 |
2018 |
285.3 |
0.251 |
2019 |
285.6 |
0.256 |
2020 |
285.9 |
0.260 |
2021 |
286.2 |
0.264 |
2022 |
286.5 |
0.267 |
2023 |
286.8 |
0.271 |
2024 |
287.0 |
0.274 |
2025 |
287.3 |
0.277 |
2026 |
287.6 |
0.279 |
2027 |
287.8 |
0.281 |
2028 |
288.1 |
0.283 |
2029 |
288.3 |
0.284 |
2030 |
288.6 |
0.285 |
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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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