02572-2458 BU 741 AB
02h 57m 14.69s -24° 58' 09.9" P.A. 6.00 sep 0.2 mag 8.06,8.20 Sp K1/2V dist. 22.47 pc (73.3 l.y.)
Coord 2000 |
02572-2458 |
|
Discov num |
BU 741 |
|
Comp |
AB |
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Coord arcsec 2000 |
02 57 14.69 -24 58 09.9 |
|
Date first |
1879 |
|
Date last |
2020 |
|
Obs |
82 |
|
Pa first |
158 |
|
Pa last |
5.5 |
|
P.A. Now (θ) |
73.7° |
|
Sep first |
0.6 |
|
Sep last |
0.22 |
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Sep. Now (ρ) |
0.089" |
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Mag pri |
8.06 |
|
Mag sec |
8.20 |
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delta mag (ΔM) |
0.14 |
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Spectral class |
K1/2V (yellow-orange) |
|
Pri motion ra |
+032 |
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Sec motion ra |
+032 |
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Pri motion dec |
-035 |
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Sec motion dec |
-035 |
|
Notes |
N
O
(See Notes, Orbital solution) |
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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 |
|
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Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Fornax |
|
SAO |
168181 |
|
HIP |
13772 |
|
Tycho2 |
6437-00958-1 |
|
HD |
18455 |
|
GC |
3559 |
|
ADS |
2242 |
|
GL |
Gl 120.1A |
|
CD |
CD-25 1169 |
|
Distance |
22.47 |
|
Distance ly |
73.3 |
|
ORBITAL ELEMENTS
Period (P) | 151.3y | |
Periastron (T) | 1870.6y | |
Semi-major axis (a) | 1.343a | |
Eccentricity (e) | 0.54 | |
Inclination (i) | 81.8° | |
Longitude of periastron (ω) | 259.7° | |
Node (Ω) | 163.2° | |
Notes | n | |
Reference | Tok2019h | |
Equinox | 2000 | |
Last observation | 2019 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
337.1 |
1.009 |
2001 |
337.6 |
1.012 |
2002 |
338.1 |
1.012 |
2003 |
338.6 |
1.010 |
2004 |
339.1 |
1.005 |
2005 |
339.7 |
0.997 |
2006 |
340.2 |
0.986 |
2007 |
340.7 |
0.971 |
2008 |
341.3 |
0.953 |
2009 |
341.9 |
0.930 |
2010 |
342.5 |
0.903 |
2011 |
343.1 |
0.871 |
2012 |
343.8 |
0.834 |
2013 |
344.6 |
0.791 |
2014 |
345.5 |
0.741 |
2015 |
346.5 |
0.685 |
2016 |
347.7 |
0.623 |
2017 |
349.2 |
0.553 |
2018 |
351.2 |
0.476 |
2019 |
353.9 |
0.394 |
2020 |
358.2 |
0.306 |
2021 |
5.9 |
0.217 |
2022 |
24.1 |
0.133 |
2023 |
73.7 |
0.089 |
2024 |
122.2 |
0.135 |
2025 |
139.7 |
0.220 |
2026 |
147.3 |
0.310 |
2027 |
151.5 |
0.398 |
2028 |
154.2 |
0.483 |
2029 |
156.1 |
0.563 |
2030 |
157.5 |
0.638 |
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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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