20210-1447 BLA 7 Aa,Ab
20h 21m 00.67s -14° 46' 53.0" P.A. 227.00 sep 0.0 mag 3.10,4.90 Sp F8V+A0 dist. 100.2 pc (326.85 l.y.)
| Coord 2000 |
20210-1447 |
|
Discov num |
BLA 7 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
20 21 00.67 -14 46 53.0 |
|
| Date first |
1976 |
|
Date last |
2023 |
|
Obs |
17 |
|
| Pa first |
49 |
|
Pa last |
226.7 |
|
P.A. Now (θ) |
40.7° (calc) |
|
| Sep first |
0.0 |
|
Sep last |
0.028 |
|
Sep. Now (ρ) |
0.056" (calc) |
|
| Mag pri |
3.10 |
|
Mag sec |
4.90 |
|
delta mag (ΔM) |
1.8 |
|
Spectral class |
F8V+A0 (yellow-white/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
| Common name |
Dabih |
|
Constellation |
Capricornus |
|
SAO |
163481 |
|
HIP |
100345 |
|
| Tycho2 |
5753-02281-1 |
|
Gaia DR2 |
6875990375998568192 |
|
HD |
193495 |
|
HR |
7776 |
|
| GC |
28295 |
|
ADS |
13717 |
|
BD |
BD+02 4138 |
|
Bayer |
Beta Capricorni |
|
| Bayer name |
Bet Cap |
|
Flamsteed |
9 Capricorni |
|
Flamsteed name |
9 Cap |
|
FK5 |
762 |
|
| Distance |
100.2 |
|
Distance ly |
326.85 |
|
Bayer greek |
β Cap |
|
ORBITAL ELEMENTS
| Period (P) | 3.762y | ± 0 |
Periastron (T) | 2015.64y | ± 0 |
Semi-major axis (a) | 0.0487a | ± 0.001 |
| Eccentricity (e) | 0.452 | ± 0.009 |
Inclination (i) | 75.1° | ± 2 |
Longitude of periastron (ω) | 124.2° | ± 1 |
| Node (Ω) | 43.6° | ± 1.3 |
Notes | n | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
47.4 |
0.044 |
| 2001 |
233.0 |
0.033 |
| 2002 |
358.6 |
0.024 |
| 2003 |
33.9 |
0.056 |
| 2004 |
57.3 |
0.027 |
| 2005 |
246.8 |
0.027 |
| 2006 |
14.3 |
0.033 |
| 2007 |
37.7 |
0.058 |
| 2008 |
142.4 |
0.007 |
| 2009 |
271.5 |
0.019 |
| 2010 |
23.0 |
0.043 |
| 2011 |
41.5 |
0.055 |
| 2012 |
217.6 |
0.026 |
| 2013 |
316.4 |
0.016 |
| 2014 |
28.7 |
0.050 |
| 2015 |
46.2 |
0.047 |
| 2016 |
230.7 |
0.033 |
| 2017 |
353.8 |
0.022 |
| 2018 |
33.1 |
0.056 |
| 2019 |
54.3 |
0.031 |
| 2020 |
243.5 |
0.028 |
| 2021 |
11.9 |
0.031 |
| 2022 |
36.9 |
0.058 |
| 2023 |
100.2 |
0.009 |
| 2024 |
265.0 |
0.020 |
| 2025 |
21.5 |
0.041 |
| 2026 |
40.7 |
0.056 |
| 2027 |
213.4 |
0.023 |
| 2028 |
306.5 |
0.016 |
| 2029 |
27.7 |
0.049 |
| 2030 |
45.1 |
0.049 |
| 2031 |
228.4 |
0.033 |
| 2032 |
348.2 |
0.020 |
| 2033 |
32.3 |
0.055 |
| 2034 |
52.1 |
0.035 |
| 2035 |
240.5 |
0.030 |
| 2036 |
9.2 |
0.029 |
| 2037 |
36.2 |
0.058 |
| 2038 |
78.2 |
0.013 |
| 2039 |
259.4 |
0.022 |
| 2040 |
20.0 |
0.039 |
| 2041 |
39.9 |
0.057 |
| 2042 |
207.4 |
0.018 |
| 2043 |
296.6 |
0.016 |
| 2044 |
26.6 |
0.047 |
| 2045 |
44.1 |
0.051 |
| 2046 |
226.0 |
0.032 |
| 2047 |
341.7 |
0.019 |
| 2048 |
31.4 |
0.054 |
| 2049 |
50.2 |
0.039 |
| 2050 |
237.8 |
0.031 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
