00219-2300 RST 5493 BC
00h 21m 52.67s -23° 00' 23.2" P.A. 93.00 sep 0.1 mag 9.90,9.90 dist. 59.49 pc (194.06 l.y.)
| Coord 2000 |
00219-2300 |
|
Discov num |
RST5493 |
|
Comp |
BC |
|
Coord arcsec 2000 |
00 21 52.67 -23 00 23.2 |
|
| Date first |
1949 |
|
Date last |
2021 |
|
Obs |
14 |
|
| Pa first |
91 |
|
Pa last |
92.7 |
|
P.A. Now (θ) |
90.9° |
|
| Sep first |
0.2 |
|
Sep last |
0.129 |
|
Sep. Now (ρ) |
0.173" |
|
| Mag pri |
9.90 |
|
Mag sec |
9.90 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
|
|
| Pri motion ra |
+133 |
|
Sec motion ra |
+133 |
|
| Pri motion dec |
-115 |
|
Sec motion dec |
-115 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
00219-2300 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 1766 |
166213 |
00 21 52 -23 00 28 |
HJ 1957 A,BC |
2016 |
44 |
27 |
6.1 |
7.67 |
9.15 |
1.48 |
|
|
| Show |
|
|
00 21 53 -23 00 23 |
RST 5493 BC |
2021 |
14 |
93 |
0.1 |
9.90 |
9.90 |
0.00 |
Y |
<=== |
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Spectr |
G1V |
|
Constellation |
Cetus |
|
HIP |
1732 |
|
Tycho2 |
6413-00769-1 |
|
| Gaia DR2 |
2360329587101891072 |
|
HD |
1766 |
|
ADS |
302 |
|
CD |
CD-23 111 |
|
| Distance |
59.49 |
|
Distance ly |
194.06 |
|
ORBITAL ELEMENTS
| Period (P) | 18.44y | ± 0.56 |
Periastron (T) | 2019.53y | ± 0.45 |
Semi-major axis (a) | 0.134a | ± 0.02 |
| Eccentricity (e) | 0.831 | ± 0.034 |
Inclination (i) | 92.1° | ± 1.7 |
Longitude of periastron (ω) | 213.6° | ± 16 |
| Node (Ω) | 91.3° | ± 1.5 |
Notes | n | |
Reference | Tok2021c | |
| Equinox | 2000 | |
Last observation | 2021 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
67.0 |
0.008 |
| 2001 |
271.3 |
0.024 |
| 2002 |
92.2 |
0.069 |
| 2003 |
91.4 |
0.124 |
| 2004 |
91.1 |
0.158 |
| 2005 |
90.8 |
0.182 |
| 2006 |
90.6 |
0.198 |
| 2007 |
90.4 |
0.207 |
| 2008 |
90.3 |
0.211 |
| 2009 |
90.1 |
0.211 |
| 2010 |
90.0 |
0.207 |
| 2011 |
89.8 |
0.198 |
| 2012 |
89.6 |
0.186 |
| 2013 |
89.4 |
0.170 |
| 2014 |
89.1 |
0.150 |
| 2015 |
88.7 |
0.126 |
| 2016 |
88.1 |
0.098 |
| 2017 |
87.0 |
0.065 |
| 2018 |
82.9 |
0.026 |
| 2019 |
277.2 |
0.017 |
| 2020 |
93.6 |
0.033 |
| 2021 |
91.7 |
0.103 |
| 2022 |
91.2 |
0.145 |
| 2023 |
90.9 |
0.173 |
| 2024 |
90.7 |
0.192 |
| 2025 |
90.5 |
0.204 |
| 2026 |
90.4 |
0.210 |
| 2027 |
90.2 |
0.212 |
| 2028 |
90.0 |
0.209 |
| 2029 |
89.9 |
0.202 |
| 2030 |
89.7 |
0.192 |
| 2031 |
89.5 |
0.178 |
| 2032 |
89.2 |
0.159 |
| 2033 |
88.9 |
0.137 |
| 2034 |
88.4 |
0.111 |
| 2035 |
87.6 |
0.080 |
| 2036 |
85.6 |
0.044 |
| 2037 |
30.4 |
0.003 |
| 2038 |
269.2 |
0.016 |
| 2039 |
92.1 |
0.077 |
| 2040 |
91.4 |
0.128 |
| 2041 |
91.0 |
0.162 |
| 2042 |
90.8 |
0.184 |
| 2043 |
90.6 |
0.199 |
| 2044 |
90.4 |
0.208 |
| 2045 |
90.3 |
0.212 |
| 2046 |
90.1 |
0.211 |
| 2047 |
89.9 |
0.206 |
| 2048 |
89.8 |
0.197 |
| 2049 |
89.6 |
0.184 |
| 2050 |
89.3 |
0.168 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
