00426-0652 RST 4154 AB
00h 42m 37.69s -06° 51' 51.8" sep 0.2 mag 9.80,9.80 Sp G0
| Coord 2000 |
00426-0652 |
|
Discov num |
RST4154 |
|
Comp |
AB |
|
Coord arcsec 2000 |
00 42 37.69 -06 51 51.8 |
|
| Date first |
1938 |
|
Date last |
2019 |
|
Obs |
11 |
|
| Pa first |
329 |
|
Pa last |
0.1 |
|
P.A. Now (θ) |
0.1° |
|
| Sep first |
0.2 |
|
Sep last |
0.246 |
|
Sep. Now (ρ) |
0.246" |
|
| Mag pri |
9.80 |
|
Mag sec |
9.80 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
-030 |
|
Sec motion ra |
|
|
| Pri motion dec |
-032 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
00426-0652 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
128915 |
00 42 38 -06 51 52 |
RST 4154 AB |
2019 |
11 |
0 |
0.2 |
9.80 |
9.80 |
0.00 |
Y |
<=== |
| Show |
HD 4019 |
128915 |
00 42 38 -06 51 52 |
HLN 48 AB,C |
1968 |
1 |
1 |
2.0 |
9.00 |
12.50 |
3.50 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cetus |
|
SAO |
128915 |
|
Tycho2 |
4679-00897-1 |
|
Gaia DR2 |
2523402107986807296 |
|
| HD |
4019 |
|
ORBITAL ELEMENTS
| Period (P) | 98.94y | ± 2.23 |
Periastron (T) | 1938.47y | ± 2.15 |
Semi-major axis (a) | 0.383a | ± 0.0069 |
| Eccentricity (e) | 0.73 | |
Inclination (i) | 102.4° | ± 0.4 |
Longitude of periastron (ω) | 267.1° | ± 1 |
| Node (Ω) | 160.2° | ± 1.1 |
Notes | | |
Reference | Tok2024e | |
| Equinox | 2000 | |
Last observation | 2024 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
39.0 |
0.158 |
| 2001 |
35.9 |
0.162 |
| 2002 |
33.0 |
0.166 |
| 2003 |
30.3 |
0.171 |
| 2004 |
27.6 |
0.175 |
| 2005 |
25.2 |
0.180 |
| 2006 |
22.8 |
0.185 |
| 2007 |
20.6 |
0.190 |
| 2008 |
18.5 |
0.195 |
| 2009 |
16.5 |
0.201 |
| 2010 |
14.6 |
0.206 |
| 2011 |
12.8 |
0.211 |
| 2012 |
11.1 |
0.216 |
| 2013 |
9.4 |
0.221 |
| 2014 |
7.9 |
0.226 |
| 2015 |
6.3 |
0.230 |
| 2016 |
4.9 |
0.235 |
| 2017 |
3.5 |
0.239 |
| 2018 |
2.1 |
0.243 |
| 2019 |
0.8 |
0.246 |
| 2020 |
359.6 |
0.249 |
| 2021 |
358.3 |
0.251 |
| 2022 |
357.1 |
0.253 |
| 2023 |
355.9 |
0.255 |
| 2024 |
354.7 |
0.255 |
| 2025 |
353.5 |
0.255 |
| 2026 |
352.2 |
0.253 |
| 2027 |
351.0 |
0.251 |
| 2028 |
349.7 |
0.246 |
| 2029 |
348.4 |
0.240 |
| 2030 |
347.0 |
0.232 |
| 2031 |
345.5 |
0.221 |
| 2032 |
343.8 |
0.207 |
| 2033 |
341.8 |
0.188 |
| 2034 |
339.3 |
0.163 |
| 2035 |
335.6 |
0.130 |
| 2036 |
328.9 |
0.088 |
| 2037 |
304.7 |
0.037 |
| 2038 |
195.5 |
0.038 |
| 2039 |
172.0 |
0.088 |
| 2040 |
165.4 |
0.132 |
| 2041 |
161.9 |
0.167 |
| 2042 |
159.5 |
0.194 |
| 2043 |
157.6 |
0.215 |
| 2044 |
156.0 |
0.232 |
| 2045 |
154.7 |
0.246 |
| 2046 |
153.4 |
0.256 |
| 2047 |
152.3 |
0.265 |
| 2048 |
151.2 |
0.271 |
| 2049 |
150.1 |
0.276 |
| 2050 |
149.1 |
0.280 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
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