00160-1637 BWL 2
00h 15m 58.08s -16° 36' 57.9" P.A. 261.00 sep 0.1 mag 8.90,9.00 Sp M4.0
Coord 2000 |
00160-1637 |
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Discov num |
BWL 2 |
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Comp |
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Coord arcsec 2000 |
00 15 58.08 -16 36 57.9 |
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Date first |
2011 |
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Date last |
2021 |
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Obs |
10 |
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Pa first |
90 |
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Pa last |
261.4 |
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P.A. Now (θ) |
261.4° |
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Sep first |
0.1 |
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Sep last |
0.101 |
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Sep. Now (ρ) |
0.101" |
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Mag pri |
8.90 |
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Mag sec |
9.00 |
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delta mag (ΔM) |
0.1 |
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Spectral class |
M4.0 (red) |
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Pri motion ra |
-110 |
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Sec motion ra |
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Pri motion dec |
+035 |
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Sec motion dec |
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Notes |
O
K
(Orbital solution, K-band or other infrared magnitudes) |
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Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cetus |
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Gaia DR2 |
2368212771939556992 |
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ORBITAL ELEMENTS
Period (P) | 4.187y | ± 0.039 |
Periastron (T) | 2021.145y | ± 0.057 |
Semi-major axis (a) | 0.108a | ± 0.007 |
Eccentricity (e) | 0.433 | ± 0.09 |
Inclination (i) | 63.6° | ± 2.1 |
Longitude of periastron (ω) | 98° | ± 4.8 |
Node (Ω) | 111.8° | ± 5.2 |
Notes | | |
Reference | Tok2021c | |
Equinox | 2000 | |
Last observation | 2021 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
140.4 |
0.049 |
2001 |
309.7 |
0.094 |
2002 |
13.8 |
0.068 |
2003 |
80.2 |
0.098 |
2004 |
120.8 |
0.077 |
2005 |
301.1 |
0.092 |
2006 |
358.1 |
0.071 |
2007 |
71.7 |
0.090 |
2008 |
110.7 |
0.095 |
2009 |
291.3 |
0.082 |
2010 |
344.1 |
0.076 |
2011 |
61.6 |
0.083 |
2012 |
103.3 |
0.104 |
2013 |
276.8 |
0.061 |
2014 |
332.1 |
0.082 |
2015 |
49.5 |
0.075 |
2016 |
96.6 |
0.107 |
2017 |
238.1 |
0.032 |
2018 |
321.8 |
0.089 |
2019 |
35.2 |
0.070 |
2020 |
90.0 |
0.105 |
2021 |
154.5 |
0.038 |
2022 |
312.7 |
0.093 |
2023 |
19.4 |
0.068 |
2024 |
82.8 |
0.100 |
2025 |
125.8 |
0.068 |
2026 |
304.2 |
0.093 |
2027 |
3.4 |
0.070 |
2028 |
74.8 |
0.093 |
2029 |
113.8 |
0.090 |
2030 |
295.0 |
0.087 |
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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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