01388-1758 LDS 838 (UV Cet)
01h 39m 01.54s -17° 57' 01.8" P.A. 333.00 sep 1.7 mag 12.70,13.20 Sp M5.5V+M6V
| Coord 2000 |
01388-1758 |
|
Discov num |
LDS 838 |
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Comp |
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Coord arcsec 2000 |
01 39 01.54 -17 57 01.8 |
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| Date first |
1935 |
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Date last |
2021 |
|
Obs |
122 |
|
| Pa first |
118 |
|
Pa last |
333.4 |
|
P.A. Now (θ) |
318.7° |
|
| Sep first |
2.0 |
|
Sep last |
1.723 |
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Sep. Now (ρ) |
1.255" |
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| Mag pri |
12.70 |
|
Mag sec |
13.20 |
|
delta mag (ΔM) |
0.5 |
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Spectral class |
M5.5V+M6V (red/red) |
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| Pri motion ra |
+339 |
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Sec motion ra |
+330 |
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| Pri motion dec |
+056 |
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Sec motion dec |
+056 |
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| Notes |
N
O
P
(See Notes, Orbital solution, 100-year proper motion) |
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rPM=0.026 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Var name |
UV Cet |
|
Constellation |
Cetus |
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ORBITAL ELEMENTS
| Period (P) | 26.359y | ± 0.025 |
Periastron (T) | 60591.9d (2024.771y) | ± 9.4 |
Semi-major axis (a) | 2049.6m | ± 3.4 |
| Eccentricity (e) | 0.6222 | ± 0.0015 |
Inclination (i) | 128.09° | ± 0.15 |
Longitude of periastron (ω) | 283.34° | ± 0.085 |
| Node (Ω) | 146.29° | ± 0.14 |
Notes | n | |
Reference | MnA2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
140.6 |
1.192 |
| 2001 |
124.7 |
1.432 |
| 2002 |
112.5 |
1.571 |
| 2003 |
101.9 |
1.661 |
| 2004 |
92.2 |
1.727 |
| 2005 |
83.2 |
1.783 |
| 2006 |
74.8 |
1.835 |
| 2007 |
66.8 |
1.888 |
| 2008 |
59.2 |
1.942 |
| 2009 |
52.1 |
1.997 |
| 2010 |
45.3 |
2.053 |
| 2011 |
38.9 |
2.107 |
| 2012 |
32.8 |
2.159 |
| 2013 |
27.0 |
2.204 |
| 2014 |
21.4 |
2.242 |
| 2015 |
15.9 |
2.268 |
| 2016 |
10.6 |
2.279 |
| 2017 |
5.2 |
2.270 |
| 2018 |
359.8 |
2.236 |
| 2019 |
354.1 |
2.170 |
| 2020 |
347.9 |
2.060 |
| 2021 |
340.9 |
1.890 |
| 2022 |
332.0 |
1.636 |
| 2023 |
318.7 |
1.255 |
| 2024 |
288.4 |
0.714 |
| 2025 |
192.8 |
0.578 |
| 2026 |
148.4 |
1.063 |
| 2027 |
129.8 |
1.362 |
| 2028 |
116.6 |
1.529 |
| 2029 |
105.5 |
1.632 |
| 2030 |
95.6 |
1.705 |
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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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