22241-0450 BU 172 AB
22h 24m 06.87s -04° 50' 13.2" P.A. 27.00 sep 0.5 mag 6.45,6.63 Sp B9.5V dist. 124.38 pc (405.73 l.y.)
| Coord 2000 |
22241-0450 |
|
Discov num |
BU 172 |
|
Comp |
AB |
|
Coord arcsec 2000 |
22 24 06.87 -04 50 13.2 |
|
| Date first |
1873 |
|
Date last |
2019 |
|
Obs |
244 |
|
| Pa first |
40 |
|
Pa last |
26.8 |
|
P.A. Now (θ) |
22.8° |
|
| Sep first |
0.5 |
|
Sep last |
0.499 |
|
Sep. Now (ρ) |
0.522" |
|
| Mag pri |
6.45 |
|
Mag sec |
6.63 |
|
delta mag (ΔM) |
0.18 |
|
Spectral class |
B9.5V (blue-white) |
|
| Pri motion ra |
+026 |
|
Sec motion ra |
|
|
| Pri motion dec |
-007 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
22241-0450 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
146067 |
22 24 07 -04 50 13 |
BU 172 AB |
2019 |
244 |
27 |
0.5 |
6.45 |
6.63 |
0.18 |
Y |
<=== |
| Show |
HD 212404 |
146067 |
22 24 07 -04 50 13 |
BU 172 AB,C |
2016 |
14 |
341 |
53.9 |
5.77 |
12.20 |
6.43 |
|
|
| Show |
|
146067 |
22 24 07 -04 50 13 |
BU 172 AB,D |
2016 |
12 |
191 |
124.8 |
5.77 |
11.50 |
5.73 |
|
|
| Show |
|
146067 |
22 24 07 -04 50 13 |
BU 172 AB,E |
2016 |
15 |
134 |
130.3 |
5.77 |
9.87 |
4.10 |
|
|
| Show |
|
146067 |
22 24 07 -04 50 13 |
STU 14 AB,F |
2000 |
6 |
3 |
256.8 |
5.77 |
11.10 |
5.33 |
|
|
Sextuple system
7 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Aquarius |
|
SAO |
146067 |
|
HIP |
110578 |
|
Tycho2 |
5229-01622-1 |
|
| Gaia DR2 |
2626301656018708608 |
|
HD |
212404 |
|
HR |
8533 |
|
GC |
31307 |
|
| ADS |
15902 |
|
BD |
BD-05 5780 |
|
Flamsteed |
51 Aquarii |
|
Flamsteed name |
51 Aqr |
|
| Distance |
124.38 |
|
Distance ly |
405.73 |
|
ORBITAL ELEMENTS
| Period (P) | 145.07y | ± 1.85 |
Periastron (T) | 1987.66y | ± 0.05 |
Semi-major axis (a) | 0.402a | ± 0.003 |
| Eccentricity (e) | 0.702 | ± 0.003 |
Inclination (i) | 161.4° | ± 0.7 |
Longitude of periastron (ω) | 296.9° | ± 3 |
| Node (Ω) | 113.5° | ± 3 |
Notes | n | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
61.8 |
0.286 |
| 2001 |
58.7 |
0.300 |
| 2002 |
55.8 |
0.313 |
| 2003 |
53.1 |
0.326 |
| 2004 |
50.7 |
0.339 |
| 2005 |
48.4 |
0.351 |
| 2006 |
46.3 |
0.363 |
| 2007 |
44.3 |
0.375 |
| 2008 |
42.4 |
0.386 |
| 2009 |
40.7 |
0.397 |
| 2010 |
39.0 |
0.408 |
| 2011 |
37.4 |
0.418 |
| 2012 |
35.9 |
0.429 |
| 2013 |
34.5 |
0.438 |
| 2014 |
33.1 |
0.448 |
| 2015 |
31.8 |
0.457 |
| 2016 |
30.5 |
0.466 |
| 2017 |
29.3 |
0.475 |
| 2018 |
28.1 |
0.483 |
| 2019 |
27.0 |
0.492 |
| 2020 |
25.9 |
0.500 |
| 2021 |
24.8 |
0.507 |
| 2022 |
23.8 |
0.515 |
| 2023 |
22.8 |
0.522 |
| 2024 |
21.8 |
0.529 |
| 2025 |
20.8 |
0.536 |
| 2026 |
19.9 |
0.543 |
| 2027 |
19.0 |
0.549 |
| 2028 |
18.1 |
0.555 |
| 2029 |
17.2 |
0.561 |
| 2030 |
16.4 |
0.567 |
| 2031 |
15.5 |
0.573 |
| 2032 |
14.7 |
0.578 |
| 2033 |
13.9 |
0.583 |
| 2034 |
13.1 |
0.589 |
| 2035 |
12.4 |
0.593 |
| 2036 |
11.6 |
0.598 |
| 2037 |
10.8 |
0.602 |
| 2038 |
10.1 |
0.607 |
| 2039 |
9.4 |
0.611 |
| 2040 |
8.7 |
0.615 |
| 2041 |
7.9 |
0.618 |
| 2042 |
7.2 |
0.622 |
| 2043 |
6.5 |
0.625 |
| 2044 |
5.9 |
0.628 |
| 2045 |
5.2 |
0.631 |
| 2046 |
4.5 |
0.634 |
| 2047 |
3.8 |
0.637 |
| 2048 |
3.2 |
0.639 |
| 2049 |
2.5 |
0.642 |
| 2050 |
1.8 |
0.644 |
|
|
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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