16170-5342 I 987 (HD 146059)
16h 16m 58.92s -53° 41' 46.3" P.A. 293.00 sep 0.5 mag 6.63,8.77 Sp G6IV+G2V dist. 70.92 pc (231.34 l.y.)
Coord 2000 |
16170-5342 |
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Discov num |
I 987 |
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Comp |
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Coord arcsec 2000 |
16 16 58.92 -53 41 46.3 |
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Date first |
1910 |
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Date last |
2021 |
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Obs |
34 |
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Pa first |
270 |
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Pa last |
292.5 |
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P.A. Now (θ) |
295.2° |
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Sep first |
0.5 |
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Sep last |
0.453 |
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Sep. Now (ρ) |
0.428" |
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Mag pri |
6.63 |
|
Mag sec |
8.77 |
|
delta mag (ΔM) |
2.14 |
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Spectral class |
G6IV+G2V (yellow/yellow) |
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Pri motion ra |
-067 |
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Sec motion ra |
-067 |
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Pri motion dec |
-093 |
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Sec motion dec |
-093 |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 146059 |
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Constellation |
Norma |
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SAO |
243533 |
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HIP |
79787 |
|
Tycho2 |
8711-02684-1 |
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Gaia DR2 |
5932223573987380480 |
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HD |
146059 |
|
GC |
21869 |
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CD |
CD-53 6537 |
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CP |
CP-53 7607 |
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Distance |
70.92 |
|
Distance ly |
231.34 |
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ORBITAL ELEMENTS
Period (P) | 102.47y | ± 1.77 |
Periastron (T) | 1952.08y | ± 1.72 |
Semi-major axis (a) | 0.384a | ± 0.012 |
Eccentricity (e) | 0.262 | ± 0.021 |
Inclination (i) | 15.9° | ± 10.8 |
Longitude of periastron (ω) | 12.2° | ± 43.4 |
Node (Ω) | 59.3° | ± 39.9 |
Notes | | |
Reference | Tok2015c | |
Equinox | 2000 | |
Last observation | 2014 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
244.2 |
0.483 |
2001 |
246.3 |
0.484 |
2002 |
248.3 |
0.484 |
2003 |
250.4 |
0.484 |
2004 |
252.5 |
0.484 |
2005 |
254.5 |
0.483 |
2006 |
256.6 |
0.482 |
2007 |
258.7 |
0.481 |
2008 |
260.7 |
0.479 |
2009 |
262.8 |
0.478 |
2010 |
265.0 |
0.476 |
2011 |
267.1 |
0.473 |
2012 |
269.2 |
0.471 |
2013 |
271.4 |
0.468 |
2014 |
273.6 |
0.465 |
2015 |
275.9 |
0.462 |
2016 |
278.1 |
0.458 |
2017 |
280.4 |
0.455 |
2018 |
282.8 |
0.451 |
2019 |
285.2 |
0.446 |
2020 |
287.6 |
0.442 |
2021 |
290.1 |
0.437 |
2022 |
292.6 |
0.433 |
2023 |
295.2 |
0.428 |
2024 |
297.9 |
0.422 |
2025 |
300.6 |
0.417 |
2026 |
303.4 |
0.412 |
2027 |
306.3 |
0.406 |
2028 |
309.3 |
0.400 |
2029 |
312.3 |
0.394 |
2030 |
315.5 |
0.389 |
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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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