02290-1959 RST 2280 Aa,Ab
02h 29m 01.67s -19° 58' 45.0" P.A. 90.00 sep 0.2 mag 8.95,12.24 Sp K4V dist. 19.55 pc (63.77 l.y.)
| Coord 2000 |
02290-1959 |
|
Discov num |
RST2280 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
02 29 01.67 -19 58 45.0 |
|
| Date first |
1934 |
|
Date last |
2021 |
|
Obs |
16 |
|
| Pa first |
346 |
|
Pa last |
90.2 |
|
P.A. Now (θ) |
90.2° |
|
| Sep first |
0.5 |
|
Sep last |
0.22 |
|
Sep. Now (ρ) |
0.22" |
|
| Mag pri |
8.95 |
|
Mag sec |
12.24 |
|
delta mag (ΔM) |
3.29 |
|
Spectral class |
K4V (yellow-orange) |
|
| Pri motion ra |
+613 |
|
Sec motion ra |
|
|
| Pri motion dec |
+187 |
|
Sec motion dec |
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|
| Notes |
O
(Orbital solution) |
|
This double is physical.
02290-1959 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
167819 |
02 29 02 -19 58 45 |
RST 2280 Aa,Ab |
2021 |
16 |
90 |
0.2 |
8.95 |
12.24 |
3.29 |
Y |
<=== |
| Show |
HD 15468 |
167819 |
02 29 02 -19 58 45 |
UC 744 AB |
2010 |
6 |
242 |
474.5 |
9.20 |
12.40 |
3.20 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cetus |
|
SAO |
167819 |
|
HIP |
11565 |
|
Tycho2 |
5862-01720-1 |
|
| HD |
15468 |
|
GL |
Gl 100A |
|
BD |
BD-20 465 |
|
Distance |
19.55 |
|
| Distance ly |
63.77 |
|
ORBITAL ELEMENTS
| Period (P) | 31.41y | ± 0.24 |
Periastron (T) | 2020.69y | ± 0.07 |
Semi-major axis (a) | 0.557a | ± 0.012 |
| Eccentricity (e) | 0.686 | ± 0.014 |
Inclination (i) | 154.1° | ± 3.2 |
Longitude of periastron (ω) | 38.7° | ± 8.8 |
| Node (Ω) | 185.2° | ± 8.4 |
Notes | | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
344.0 |
0.858 |
| 2001 |
340.9 |
0.879 |
| 2002 |
338.0 |
0.893 |
| 2003 |
335.1 |
0.902 |
| 2004 |
332.2 |
0.905 |
| 2005 |
329.4 |
0.903 |
| 2006 |
326.5 |
0.896 |
| 2007 |
323.6 |
0.883 |
| 2008 |
320.5 |
0.865 |
| 2009 |
317.3 |
0.842 |
| 2010 |
313.9 |
0.814 |
| 2011 |
310.3 |
0.780 |
| 2012 |
306.3 |
0.740 |
| 2013 |
301.7 |
0.695 |
| 2014 |
296.5 |
0.643 |
| 2015 |
290.3 |
0.585 |
| 2016 |
282.7 |
0.520 |
| 2017 |
272.7 |
0.448 |
| 2018 |
258.7 |
0.370 |
| 2019 |
236.8 |
0.287 |
| 2020 |
197.1 |
0.206 |
| 2021 |
123.4 |
0.167 |
| 2022 |
62.6 |
0.247 |
| 2023 |
36.4 |
0.359 |
| 2024 |
22.5 |
0.460 |
| 2025 |
13.3 |
0.547 |
| 2026 |
6.4 |
0.621 |
| 2027 |
1.0 |
0.683 |
| 2028 |
356.3 |
0.736 |
| 2029 |
352.3 |
0.781 |
| 2030 |
348.7 |
0.818 |
|
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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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