15423-1929 HU 653
15h 42m 19.47s -19° 29' 28.6" P.A. 177.00 sep 4.3 mag 8.94,12.90 Sp G8IV dist. 47.51 pc (154.98 l.y.)
Coord 2000 |
15423-1929 |
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Discov num |
HU 653 |
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Comp |
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Coord arcsec 2000 |
15 42 19.47 -19 29 28.6 |
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Date first |
1902 |
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Date last |
2019 |
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Obs |
13 |
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Pa first |
194 |
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Pa last |
177.4 |
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P.A. Now (θ) |
177.4° |
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Sep first |
3.6 |
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Sep last |
4.331 |
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Sep. Now (ρ) |
4.331" |
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Mag pri |
8.94 |
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Mag sec |
12.90 |
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delta mag (ΔM) |
3.96 |
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Spectral class |
G8IV (yellow) |
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Pri motion ra |
-168 |
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Sec motion ra |
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Pri motion dec |
-110 |
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Sec motion dec |
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Notes |
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Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Libra |
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SAO |
159450 |
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HIP |
76917 |
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Tycho2 |
6193-00108-1 |
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Gaia DR2 |
6254010117181952640 |
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HD |
140072 |
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ADS |
9748 |
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BD |
BD-19 4190 |
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Distance |
47.51 |
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Distance ly |
154.98 |
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SUSPECTED ORBITAL ELEMENTS
Identifier | 15421-1928 GJ 595 |
coord_arcsec_2000 | 154206.55-192814.4 |
Period (P) | 62d | ± 0.1 |
Periastron (T) | 2018.43y | ± 0.22 |
Semi-major axis (a) | 9m | ± 2.2 |
Eccentricity (e) | 0.02 | ± 0.14 |
Inclination (i) | 94.5° | ± 5.8 |
Longitude of periastron (ω) | 217.9° | ± 112.5 |
Node (Ω) | 205.9° | ± 13.2 |
Notes | | |
Reference | Hen2018 | |
Equinox | 2000 | |
Last observation | 2017 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
204.8 |
0.009 |
2001-01-01 |
208.0 |
0.008 |
2002-01-01 |
215.0 |
0.004 |
2003-01-01 |
8.5 |
0.002 |
2004-01-01 |
22.7 |
0.007 |
2005-01-01 |
26.3 |
0.009 |
2006-01-01 |
30.5 |
0.006 |
2007-01-01 |
64.3 |
0.001 |
2008-01-01 |
198.9 |
0.005 |
2009-01-01 |
204.3 |
0.009 |
2010-01-01 |
207.4 |
0.009 |
2011-01-01 |
212.8 |
0.005 |
2012-01-01 |
353.3 |
0.001 |
2013-01-01 |
21.8 |
0.007 |
2014-01-01 |
25.8 |
0.009 |
2015-01-01 |
29.5 |
0.007 |
2016-01-01 |
45.6 |
0.002 |
2017-01-01 |
196.7 |
0.004 |
2018-01-01 |
203.7 |
0.008 |
2019-01-01 |
206.8 |
0.009 |
2020-01-01 |
211.3 |
0.006 |
2021-01-01 |
295.3 |
0.001 |
2022-01-01 |
20.7 |
0.006 |
2023-01-01 |
25.2 |
0.009 |
2024-01-01 |
28.7 |
0.008 |
2025-01-01 |
38.7 |
0.003 |
2026-01-01 |
193.2 |
0.003 |
2027-01-01 |
203.0 |
0.008 |
2028-01-01 |
206.3 |
0.009 |
2029-01-01 |
210.1 |
0.007 |
2030-01-01 |
238.3 |
0.001 |
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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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