20210-1447 BAR 12 Ba,Bb
20h 20m 46.55s -14° 47' 05.5" P.A. 51.00 sep 0.4 mag 6.16,9.14 Sp A0III dist. 104.06 pc (339.44 l.y.)
| Coord 2000 |
20210-1447 |
|
Discov num |
BAR 12 |
|
Comp |
Ba,Bb |
|
Coord arcsec 2000 |
20 20 46.55 -14 47 05.5 |
|
| Date first |
1884 |
|
Date last |
2023 |
|
Obs |
32 |
|
| Pa first |
106 |
|
Pa last |
50.5 |
|
P.A. Now (θ) |
50.5° |
|
| Sep first |
0.9 |
|
Sep last |
0.414 |
|
Sep. Now (ρ) |
0.414" |
|
| Mag pri |
6.16 |
|
Mag sec |
9.14 |
|
delta mag (ΔM) |
2.98 |
|
Spectral class |
A0III (white) |
|
| Pri motion ra |
+042 |
|
Sec motion ra |
|
|
| Pri motion dec |
+002 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
20210-1447 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
163481 |
20 21 01 -14 46 53 |
BLA 7 Aa,Ab |
2023 |
17 |
227 |
0.0 |
3.10 |
4.90 |
1.80 |
Y |
|
| Show |
Dabih |
163481 |
20 21 01 -14 46 53 |
STFA 52 AB |
2016 |
42 |
266 |
205.2 |
3.15 |
6.08 |
2.93 |
|
|
| Show |
|
163481 |
20 21 01 -14 46 53 |
STFA 52 AC |
2012 |
11 |
133 |
226.1 |
3.15 |
8.83 |
5.68 |
|
|
| Show |
|
163481 |
20 21 01 -14 46 53 |
HJ 2948 AD |
2000 |
3 |
292 |
115.9 |
3.15 |
12.96 |
9.81 |
|
|
| Show |
|
106006 |
20 20 47 -14 47 06 |
BAR 12 Ba,Bb |
2023 |
32 |
51 |
0.4 |
6.16 |
9.14 |
2.98 |
Y |
<=== |
| Show |
|
163471 |
20 20 47 -14 47 06 |
STFA 52 BC |
2015 |
14 |
111 |
396.5 |
6.08 |
8.83 |
2.75 |
|
|
| Show |
|
|
20 20 53 -14 46 09 |
HJ 2948 DE |
2000 |
8 |
321 |
3.9 |
13.70 |
14.40 |
0.70 |
|
|
Septuple system
7 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Capricornus |
|
SAO |
106006 |
|
HIP |
100325 |
|
Tycho2 |
5753-02282-1 |
|
| Gaia DR2 |
6875990891389558400 |
|
HD |
193452 |
|
HR |
7775 |
|
GC |
28286 |
|
| ADS |
13717 |
|
BD |
BD-15 5626 |
|
Bayer |
Beta 2 |
|
Bayer name |
Bet2 |
|
| Distance |
104.06 |
|
Distance ly |
339.44 |
|
Bayer greek |
β2 |
|
Bayer or Flamsteed indentifiers not always match the correct constellation because of procession and proper motion of the star. ( vs Cap)
ORBITAL ELEMENTS
| Period (P) | 400y | |
Periastron (T) | 2065y | |
Semi-major axis (a) | 0.689a | |
| Eccentricity (e) | 0.458 | |
Inclination (i) | 125.2° | |
Longitude of periastron (ω) | 137.1° | |
| Node (Ω) | 84.7° | |
Notes | n | |
Reference | Tok2021c | |
| Equinox | 2000 | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
69.8 |
0.620 |
| 2001 |
69.3 |
0.612 |
| 2002 |
68.7 |
0.604 |
| 2003 |
68.1 |
0.597 |
| 2004 |
67.4 |
0.589 |
| 2005 |
66.8 |
0.581 |
| 2006 |
66.1 |
0.572 |
| 2007 |
65.5 |
0.564 |
| 2008 |
64.8 |
0.556 |
| 2009 |
64.0 |
0.547 |
| 2010 |
63.3 |
0.539 |
| 2011 |
62.5 |
0.530 |
| 2012 |
61.7 |
0.521 |
| 2013 |
60.9 |
0.512 |
| 2014 |
60.1 |
0.503 |
| 2015 |
59.2 |
0.494 |
| 2016 |
58.3 |
0.485 |
| 2017 |
57.3 |
0.476 |
| 2018 |
56.3 |
0.466 |
| 2019 |
55.3 |
0.457 |
| 2020 |
54.2 |
0.448 |
| 2021 |
53.1 |
0.438 |
| 2022 |
52.0 |
0.429 |
| 2023 |
50.7 |
0.419 |
| 2024 |
49.5 |
0.409 |
| 2025 |
48.1 |
0.400 |
| 2026 |
46.7 |
0.390 |
| 2027 |
45.2 |
0.381 |
| 2028 |
43.7 |
0.371 |
| 2029 |
42.1 |
0.362 |
| 2030 |
40.3 |
0.352 |
| 2031 |
38.5 |
0.343 |
| 2032 |
36.6 |
0.334 |
| 2033 |
34.6 |
0.325 |
| 2034 |
32.5 |
0.316 |
| 2035 |
30.2 |
0.307 |
| 2036 |
27.8 |
0.299 |
| 2037 |
25.3 |
0.291 |
| 2038 |
22.6 |
0.283 |
| 2039 |
19.8 |
0.276 |
| 2040 |
16.9 |
0.269 |
| 2041 |
13.8 |
0.263 |
| 2042 |
10.5 |
0.257 |
| 2043 |
7.1 |
0.252 |
| 2044 |
3.6 |
0.247 |
| 2045 |
360.0 |
0.243 |
| 2046 |
356.2 |
0.240 |
| 2047 |
352.4 |
0.238 |
| 2048 |
348.5 |
0.237 |
| 2049 |
344.6 |
0.236 |
| 2050 |
340.7 |
0.236 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
