12283-6146 RST 4499 BC
12h 28m 16.80s -61° 45' 58.5" P.A. 32.00 sep 0.2 mag 8.80,8.80 Sp G3V dist. 48.38 pc (157.82 l.y.)
| Coord 2000 |
12283-6146 |
|
Discov num |
RST4499 |
|
Comp |
BC |
|
Coord arcsec 2000 |
12 28 16.80 -61 45 58.5 |
|
| Date first |
1939 |
|
Date last |
2021 |
|
Obs |
24 |
|
| Pa first |
358 |
|
Pa last |
31.5 |
|
P.A. Now (θ) |
6.9° |
|
| Sep first |
0.4 |
|
Sep last |
0.184 |
|
Sep. Now (ρ) |
0.204" |
|
| Mag pri |
8.80 |
|
Mag sec |
8.80 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
G3V (yellow) |
|
| Pri motion ra |
+100 |
|
Sec motion ra |
+083 |
|
| Pri motion dec |
-170 |
|
Sec motion dec |
-150 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.133 (< 0.3, Physical double)
This double is physical.
12283-6146 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 108500 |
251919 |
12 28 17 -61 45 56 |
CPO 12 A,BC |
2021 |
54 |
184 |
2.2 |
7.32 |
8.24 |
0.92 |
Y |
|
| Show |
|
251919 |
12 28 17 -61 45 56 |
RST 4499 AD |
2016 |
5 |
331 |
7.9 |
7.32 |
13.70 |
6.38 |
|
|
| Show |
|
|
12 28 17 -61 45 58 |
RST 4499 BC |
2021 |
24 |
32 |
0.2 |
8.80 |
8.80 |
0.00 |
Y |
<=== |
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Crux |
|
HIP |
60845 |
|
Tycho2 |
8975-03266-2 |
|
Gaia DR2 |
6054954738289909632 |
|
| HD |
108500 |
|
CP |
CP-61 3204 |
|
Distance |
48.38 |
|
Distance ly |
157.82 |
|
ORBITAL ELEMENTS
| Period (P) | 28.2y | ± 0.2 |
Periastron (T) | 1990.2y | ± 0.3 |
Semi-major axis (a) | 0.221a | ± 0.003 |
| Eccentricity (e) | 0.166 | ± 0.009 |
Inclination (i) | 156.1° | ± 2.5 |
Longitude of periastron (ω) | 77.3° | ± 5.9 |
| Node (Ω) | 162.8° | ± 6.5 |
Notes | | |
Reference | Tok2018h | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
309.0 |
0.238 |
| 2001 |
299.2 |
0.240 |
| 2002 |
289.4 |
0.239 |
| 2003 |
279.6 |
0.239 |
| 2004 |
269.7 |
0.237 |
| 2005 |
259.6 |
0.236 |
| 2006 |
249.4 |
0.234 |
| 2007 |
239.0 |
0.232 |
| 2008 |
228.5 |
0.231 |
| 2009 |
217.9 |
0.229 |
| 2010 |
207.0 |
0.226 |
| 2011 |
195.9 |
0.223 |
| 2012 |
184.4 |
0.219 |
| 2013 |
172.4 |
0.213 |
| 2014 |
159.5 |
0.205 |
| 2015 |
145.6 |
0.196 |
| 2016 |
130.2 |
0.186 |
| 2017 |
113.1 |
0.177 |
| 2018 |
94.4 |
0.171 |
| 2019 |
74.8 |
0.169 |
| 2020 |
55.5 |
0.173 |
| 2021 |
37.4 |
0.181 |
| 2022 |
21.3 |
0.192 |
| 2023 |
6.9 |
0.204 |
| 2024 |
354.0 |
0.214 |
| 2025 |
342.3 |
0.223 |
| 2026 |
331.4 |
0.230 |
| 2027 |
321.0 |
0.235 |
| 2028 |
311.0 |
0.238 |
| 2029 |
301.2 |
0.239 |
| 2030 |
291.4 |
0.240 |
|
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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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