02572-2458 BEU 4 Ca,Cb
02h 57m 13.19s -24° 58' 30.4" P.A. 274.00 sep 0.0 mag 8.24,9.30 Sp K2 dist. 149.93 pc (489.07 l.y.)
| Coord 2000 |
02572-2458 |
|
Discov num |
BEU 4 |
|
Comp |
Ca,Cb |
|
Coord arcsec 2000 |
02 57 13.19 -24 58 30.4 |
|
| Date first |
2000 |
|
Date last |
2020 |
|
Obs |
18 |
|
| Pa first |
170 |
|
Pa last |
273.6 |
|
P.A. Now (θ) |
273.6° |
|
| Sep first |
0.1 |
|
Sep last |
0.048 |
|
Sep. Now (ρ) |
0.048" |
|
| Mag pri |
8.24 |
|
Mag sec |
9.30 |
|
delta mag (ΔM) |
1.06 |
|
Spectral class |
K2 (yellow-orange) |
|
| Pri motion ra |
+015 |
|
Sec motion ra |
|
|
| Pri motion dec |
-033 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
02572-2458 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
168181 |
02 57 15 -24 58 10 |
BU 741 AB |
2020 |
82 |
6 |
0.2 |
8.06 |
8.20 |
0.14 |
Y |
|
| Show |
HD 18455 |
168181 |
02 57 15 -24 58 10 |
S 423 AB,C |
2017 |
36 |
226 |
29.2 |
8.06 |
7.86 |
0.20 |
|
|
| Show |
|
168180 |
02 57 13 -24 58 30 |
BEU 4 Ca,Cb |
2020 |
18 |
274 |
0.0 |
8.24 |
9.30 |
1.06 |
Y |
<=== |
| Show |
|
168180 |
02 57 13 -24 58 30 |
HDS 379 CD |
1991 |
2 |
173 |
5.1 |
7.86 |
11.88 |
4.02 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Fornax |
|
SAO |
168180 |
|
HIP |
13768 |
|
Tycho2 |
6437-00959-1 |
|
| Gaia DR2 |
5076269164798852864 |
|
HD |
18455 |
|
HR |
884 |
|
ADS |
2242 |
|
| CD |
CD-30 1122 |
|
CP |
CP-30 366 |
|
Distance |
149.93 |
|
Distance ly |
489.07 |
|
ORBITAL ELEMENTS
| Period (P) | 1.518y | ± 0.001 |
Periastron (T) | 2007.088y | ± 0.021 |
Semi-major axis (a) | 0.062a | ± 0.002 |
| Eccentricity (e) | 0.54 | ± 0.024 |
Inclination (i) | 160.4° | ± 12 |
Longitude of periastron (ω) | 341.8° | ± 11 |
| Node (Ω) | 2° | ± 9.1 |
Notes | n | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
221.5 |
0.085 |
| 2001 |
33.6 |
0.028 |
| 2002 |
180.5 |
0.089 |
| 2003 |
225.2 |
0.082 |
| 2004 |
64.3 |
0.030 |
| 2005 |
183.7 |
0.091 |
| 2006 |
229.1 |
0.079 |
| 2007 |
89.2 |
0.035 |
| 2008 |
186.8 |
0.093 |
| 2009 |
233.4 |
0.076 |
| 2010 |
107.8 |
0.040 |
| 2011 |
189.8 |
0.094 |
| 2012 |
238.2 |
0.072 |
| 2013 |
121.8 |
0.046 |
| 2014 |
192.7 |
0.094 |
| 2015 |
243.5 |
0.068 |
| 2016 |
132.5 |
0.052 |
| 2017 |
195.6 |
0.095 |
| 2018 |
249.5 |
0.064 |
| 2019 |
141.0 |
0.058 |
| 2020 |
198.5 |
0.095 |
| 2021 |
256.5 |
0.059 |
| 2022 |
148.1 |
0.063 |
| 2023 |
201.4 |
0.095 |
| 2024 |
264.7 |
0.054 |
| 2025 |
154.1 |
0.068 |
| 2026 |
204.3 |
0.094 |
| 2027 |
274.7 |
0.048 |
| 2028 |
159.4 |
0.073 |
| 2029 |
207.3 |
0.093 |
| 2030 |
287.2 |
0.043 |
|
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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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