03305+2006 RAO 11 Ba,Bb
03h 30m 31.22s +20° 05' 55.2" P.A. 249.00 sep 0.3 mag 10.20,11.00 Sp K2 dist. 39.59 pc (129.14 l.y.)
| Coord 2000 |
03305+2006 |
|
Discov num |
RAO 11 |
|
Comp |
Ba,Bb |
|
Coord arcsec 2000 |
03 30 31.22 +20 05 55.2 |
|
| Date first |
2012 |
|
Date last |
2023 |
|
Obs |
10 |
|
| Pa first |
76 |
|
Pa last |
249.1 |
|
P.A. Now (θ) |
254.9° |
|
| Sep first |
0.2 |
|
Sep last |
0.309 |
|
Sep. Now (ρ) |
0.229" |
|
| Mag pri |
10.20 |
|
Mag sec |
11.00 |
|
delta mag (ΔM) |
0.8 |
|
Spectral class |
K2 (yellow-orange) |
|
| Pri motion ra |
+157 |
|
Sec motion ra |
|
|
| Pri motion dec |
-056 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
03305+2006 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 21663 |
|
03 30 30 +20 06 12 |
STF 399 AB |
2016 |
26 |
146 |
19.6 |
8.33 |
10.75 |
2.42 |
|
|
| Show |
|
|
03 30 30 +20 06 12 |
STF 399 AC |
2016 |
10 |
222 |
57.6 |
8.40 |
12.07 |
3.67 |
|
|
| Show |
|
|
03 30 31 +20 05 55 |
RAO 11 Ba,Bb |
2023 |
10 |
249 |
0.3 |
10.20 |
11.00 |
0.80 |
Y |
<=== |
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Taurus |
|
HIP |
16329 |
|
Tycho2 |
1242-00798-1 |
|
Gaia DR2 |
57890528450770560 |
|
| HD |
21663 |
|
BD |
BD+19 547 |
|
Distance |
39.59 |
|
Distance ly |
129.14 |
|
ORBITAL ELEMENTS
| Period (P) | 31.46y | ± 0.25 |
Periastron (T) | 2015.18y | ± 0.37 |
Semi-major axis (a) | 0.294a | ± 0.024 |
| Eccentricity (e) | 0.395 | ± 0.019 |
Inclination (i) | 103.1° | ± 1.6 |
Longitude of periastron (ω) | 18.8° | ± 5.4 |
| Node (Ω) | 63° | ± 4.4 |
Notes | | |
Reference | Tok2019c | |
| Equinox | | |
Last observation | 2018 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
237.8 |
0.382 |
| 2001 |
236.4 |
0.365 |
| 2002 |
234.7 |
0.342 |
| 2003 |
232.8 |
0.314 |
| 2004 |
230.5 |
0.282 |
| 2005 |
227.5 |
0.245 |
| 2006 |
223.4 |
0.204 |
| 2007 |
217.2 |
0.161 |
| 2008 |
206.2 |
0.117 |
| 2009 |
183.1 |
0.078 |
| 2010 |
138.2 |
0.065 |
| 2011 |
100.6 |
0.090 |
| 2012 |
82.8 |
0.129 |
| 2013 |
73.1 |
0.163 |
| 2014 |
66.2 |
0.181 |
| 2015 |
59.9 |
0.173 |
| 2016 |
51.5 |
0.138 |
| 2017 |
34.3 |
0.086 |
| 2018 |
338.5 |
0.050 |
| 2019 |
281.6 |
0.085 |
| 2020 |
264.6 |
0.143 |
| 2021 |
257.4 |
0.200 |
| 2022 |
253.3 |
0.249 |
| 2023 |
250.5 |
0.292 |
| 2024 |
248.4 |
0.327 |
| 2025 |
246.6 |
0.356 |
| 2026 |
245.1 |
0.377 |
| 2027 |
243.7 |
0.391 |
| 2028 |
242.4 |
0.400 |
| 2029 |
241.1 |
0.402 |
| 2030 |
239.8 |
0.398 |
| 2031 |
238.5 |
0.388 |
| 2032 |
237.0 |
0.373 |
| 2033 |
235.5 |
0.353 |
| 2034 |
233.7 |
0.328 |
| 2035 |
231.6 |
0.297 |
| 2036 |
229.0 |
0.263 |
| 2037 |
225.5 |
0.224 |
| 2038 |
220.4 |
0.181 |
| 2039 |
212.1 |
0.137 |
| 2040 |
196.0 |
0.094 |
| 2041 |
161.0 |
0.066 |
| 2042 |
114.8 |
0.075 |
| 2043 |
89.4 |
0.111 |
| 2044 |
77.0 |
0.149 |
| 2045 |
69.2 |
0.176 |
| 2046 |
62.9 |
0.180 |
| 2047 |
55.8 |
0.157 |
| 2048 |
44.2 |
0.111 |
| 2049 |
12.1 |
0.060 |
| 2050 |
299.8 |
0.062 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
