11596-7813 HJ 4486 Aa,Ab
11h 59m 37.58s -78° 13' 18.5" P.A. 43.00 sep 0.1 mag 6.00,6.20 Sp B9Vn dist. 110.86 pc (361.63 l.y.)
| Coord 2000 |
11596-7813 |
|
Discov num |
HJ 4486 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
11 59 37.58 -78 13 18.5 |
|
| Date first |
2015 |
|
Date last |
2023 |
|
Obs |
22 |
|
| Pa first |
57 |
|
Pa last |
42.5 |
|
P.A. Now (θ) |
42.5° |
|
| Sep first |
0.0 |
|
Sep last |
0.062 |
|
Sep. Now (ρ) |
0.062" |
|
| Mag pri |
6.00 |
|
Mag sec |
6.20 |
|
delta mag (ΔM) |
0.2 |
|
Spectral class |
B9Vn (blue-white) |
|
| Pri motion ra |
-039 |
|
Sec motion ra |
|
|
| Pri motion dec |
+000 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
11596-7813 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
256894 |
11 59 38 -78 13 18 |
HJ 4486 Aa,Ab |
2023 |
22 |
43 |
0.1 |
6.00 |
6.20 |
0.20 |
Y |
<=== |
| Show |
|
256894 |
11 59 38 -78 13 18 |
HJ 4486 AB |
2023 |
39 |
271 |
0.1 |
5.32 |
6.01 |
0.69 |
Y |
|
| Show |
Eps Cha |
256894 |
11 59 38 -78 13 18 |
FGL 1 AB,C |
2015 |
11 |
39 |
134.0 |
4.91 |
6.62 |
1.71 |
|
|
| Show |
|
256894 |
11 59 38 -78 13 18 |
HJ 4486 AB,D |
2016 |
2 |
297 |
101.9 |
5.32 |
15.20 |
9.88 |
|
|
Sextuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Chamaeleon |
|
SAO |
256894 |
|
HIP |
58484 |
|
Tycho2 |
9415-03217-1 |
|
| Gaia DR2 |
5224176190525614464 |
|
HD |
104174 |
|
HR |
4583 |
|
GC |
16402 |
|
| CP |
CP-77 772 |
|
Bayer |
Epsilon Chamaeleontis |
|
Bayer name |
Eps Cha |
|
Distance |
110.86 |
|
| Distance ly |
361.63 |
|
Bayer greek |
ε Cha |
|
ORBITAL ELEMENTS
| Period (P) | 6.43y | ± 0.09 |
Periastron (T) | 2018.57y | ± 0.06 |
Semi-major axis (a) | 0.0541a | ± 0.0022 |
| Eccentricity (e) | 0.733 | ± 0.02 |
Inclination (i) | 111.2° | ± 1.8 |
Longitude of periastron (ω) | 116.2° | ± 2.2 |
| Node (Ω) | 21.1° | ± 1.5 |
Notes | n | |
Reference | Tok2023c | |
| Equinox | 2000 | |
Last observation | 2022 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
160.0 |
0.025 |
| 2001 |
97.6 |
0.029 |
| 2002 |
66.1 |
0.044 |
| 2003 |
50.5 |
0.057 |
| 2004 |
39.4 |
0.061 |
| 2005 |
26.5 |
0.047 |
| 2006 |
188.4 |
0.023 |
| 2007 |
121.5 |
0.025 |
| 2008 |
76.5 |
0.038 |
| 2009 |
56.3 |
0.052 |
| 2010 |
44.0 |
0.061 |
| 2011 |
32.9 |
0.057 |
| 2012 |
354.8 |
0.012 |
| 2013 |
150.5 |
0.024 |
| 2014 |
91.4 |
0.031 |
| 2015 |
63.4 |
0.046 |
| 2016 |
48.8 |
0.058 |
| 2017 |
37.9 |
0.061 |
| 2018 |
23.6 |
0.041 |
| 2019 |
178.8 |
0.025 |
| 2020 |
112.9 |
0.026 |
| 2021 |
72.8 |
0.040 |
| 2022 |
54.3 |
0.054 |
| 2023 |
42.5 |
0.061 |
| 2024 |
31.1 |
0.054 |
| 2025 |
237.4 |
0.008 |
| 2026 |
140.9 |
0.024 |
| 2027 |
85.9 |
0.033 |
| 2028 |
60.9 |
0.048 |
| 2029 |
47.2 |
0.059 |
| 2030 |
36.3 |
0.060 |
| 2031 |
19.7 |
0.035 |
| 2032 |
169.8 |
0.025 |
| 2033 |
105.1 |
0.028 |
| 2034 |
69.4 |
0.042 |
| 2035 |
52.4 |
0.056 |
| 2036 |
41.0 |
0.061 |
| 2037 |
29.0 |
0.051 |
| 2038 |
201.6 |
0.019 |
| 2039 |
131.4 |
0.024 |
| 2040 |
81.1 |
0.035 |
| 2041 |
58.6 |
0.050 |
| 2042 |
45.6 |
0.060 |
| 2043 |
34.7 |
0.059 |
| 2044 |
13.4 |
0.026 |
| 2045 |
160.6 |
0.025 |
| 2046 |
98.0 |
0.029 |
| 2047 |
66.4 |
0.044 |
| 2048 |
50.6 |
0.057 |
| 2049 |
39.5 |
0.061 |
| 2050 |
26.7 |
0.047 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
