20210-1447 BAR 12 Ba,Bb
20h 20m 46.55s -14° 47' 05.5" P.A. 52.00 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 |
2021 |
|
Obs |
30 |
|
Pa first |
106 |
|
Pa last |
52.1 |
|
P.A. Now (θ) |
52.1° |
|
Sep first |
0.9 |
|
Sep last |
0.431 |
|
Sep. Now (ρ) |
0.431" |
|
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 |
2021 |
15 |
35 |
0.1 |
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 |
|
163471 |
20 20 47 -14 47 06 |
BAR 12 Ba,Bb |
2021 |
30 |
52 |
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
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Capricornus |
|
SAO |
163471 |
|
HIP |
100325 |
|
Tycho2 |
5753-02282-1 |
|
Gaia DR2 |
6875990891389558400 |
|
HD |
193452 |
|
HR |
7775 |
|
GC |
28286 |
|
ADS |
13717 |
|
BD |
BD-15 5626 |
|
Bayer |
Beta 2 Capricorni |
|
Bayer name |
Bet2 Cap |
|
Distance |
104.06 |
|
Distance ly |
339.44 |
|
Bayer greek |
β2 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 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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