04376-0228 KAS 1 Ca,Cb
04h 37m 37.46s -02° 29' 28.4" P.A. 204.00 sep 0.1 mag 10.50,13.00 Sp M0.5
| Coord 2000 |
04376-0228 |
|
Discov num |
KAS 1 |
|
Comp |
Ca,Cb |
|
Coord arcsec 2000 |
04 37 37.46 -02 29 28.4 |
|
| Date first |
2001 |
|
Date last |
2021 |
|
Obs |
29 |
|
| Pa first |
198 |
|
Pa last |
204.3 |
|
P.A. Now (θ) |
202.1° |
|
| Sep first |
0.3 |
|
Sep last |
0.148 |
|
Sep. Now (ρ) |
0.212" |
|
| Mag pri |
10.50 |
|
Mag sec |
13.00 |
|
delta mag (ΔM) |
2.5 |
|
Spectral class |
M0.5 (red) |
|
| Pri motion ra |
+046 |
|
Sec motion ra |
|
|
| Pri motion dec |
-065 |
|
Sec motion dec |
|
|
| Notes |
N
O
R
(See Notes, Orbital solution, Red magnitudes) |
|
This double is physical.
04376-0228 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
51 Eri |
131358 |
04 37 36 -02 28 25 |
BU 88 AB |
2000 |
11 |
75 |
28.9 |
5.22 |
11.80 |
6.58 |
|
|
| Show |
|
131358 |
04 37 36 -02 28 25 |
WAL 32 AC |
2003 |
7 |
163 |
66.7 |
5.22 |
10.59 |
5.37 |
|
|
| Show |
|
|
04 37 37 -02 29 28 |
KAS 1 Ca,Cb |
2021 |
29 |
204 |
0.1 |
10.50 |
13.00 |
2.50 |
Y |
<=== |
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Eridanus |
|
Gaia DR2 |
3205094369407459456 |
|
ORBITAL ELEMENTS
| Period (P) | 29.03y | ± 0.5 |
Periastron (T) | 2007.14y | ± 0.16 |
Semi-major axis (a) | 0.332a | ± 0.005 |
| Eccentricity (e) | 0.19 | ± 0.02 |
Inclination (i) | 92.1° | ± 0.2 |
Longitude of periastron (ω) | 291° | ± 3 |
| Node (Ω) | 18.8° | ± 0.2 |
Notes | n | |
Reference | Mtt2015 | |
| Equinox | 2000 | |
Last observation | 2015 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
198.8 |
0.342 |
| 2001 |
198.3 |
0.320 |
| 2002 |
197.8 |
0.283 |
| 2003 |
197.0 |
0.231 |
| 2004 |
195.7 |
0.164 |
| 2005 |
192.3 |
0.086 |
| 2006 |
108.9 |
0.010 |
| 2007 |
25.1 |
0.085 |
| 2008 |
21.6 |
0.163 |
| 2009 |
20.3 |
0.226 |
| 2010 |
19.5 |
0.272 |
| 2011 |
18.9 |
0.297 |
| 2012 |
18.3 |
0.304 |
| 2013 |
17.8 |
0.293 |
| 2014 |
17.2 |
0.268 |
| 2015 |
16.4 |
0.231 |
| 2016 |
15.2 |
0.185 |
| 2017 |
13.2 |
0.132 |
| 2018 |
8.3 |
0.075 |
| 2019 |
334.0 |
0.020 |
| 2020 |
216.1 |
0.048 |
| 2021 |
206.4 |
0.105 |
| 2022 |
203.5 |
0.161 |
| 2023 |
202.1 |
0.212 |
| 2024 |
201.2 |
0.258 |
| 2025 |
200.5 |
0.295 |
| 2026 |
200.0 |
0.324 |
| 2027 |
199.6 |
0.343 |
| 2028 |
199.2 |
0.349 |
| 2029 |
198.8 |
0.343 |
| 2030 |
198.3 |
0.321 |
|
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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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