16054-1948 MCA 42 CE
16h 05m 26.55s -19° 48' 06.6" P.A. 91.00 sep 0.1 mag 4.52,6.60 Sp B2V dist. 122.1 pc (398.29 l.y.)
| Coord 2000 |
16054-1948 |
|
Discov num |
MCA 42 |
|
Comp |
CE |
|
Coord arcsec 2000 |
16 05 26.55 -19 48 06.6 |
|
| Date first |
1971 |
|
Date last |
2023 |
|
Obs |
31 |
|
| Pa first |
308 |
|
Pa last |
90.8 |
|
P.A. Now (θ) |
148.5° |
|
| Sep first |
0.1 |
|
Sep last |
0.075 |
|
Sep. Now (ρ) |
0.034" |
|
| Mag pri |
4.52 |
|
Mag sec |
6.60 |
|
delta mag (ΔM) |
2.08 |
|
Spectral class |
B2V (blue-white) |
|
| Pri motion ra |
-035 |
|
Sec motion ra |
|
|
| Pri motion dec |
-007 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
16054-1948 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
159682 |
16 05 26 -19 48 19 |
OCC 9158 Aa,Ab |
1976 |
0 |
-1 |
0.0 |
2.90 |
4.10 |
1.20 |
Y |
|
| Show |
|
159682 |
16 05 26 -19 48 19 |
BU 947 AB |
2023 |
49 |
224 |
0.3 |
2.62 |
10.60 |
7.98 |
Y |
|
| Show |
Acrab |
159682 |
16 05 26 -19 48 19 |
H 3 7 AC |
2021 |
144 |
19 |
13.7 |
2.59 |
4.52 |
1.93 |
|
|
| Show |
|
159682 |
16 05 26 -19 48 19 |
PWL 9001 AD |
2016 |
4 |
30 |
519.2 |
2.62 |
7.50 |
4.88 |
|
|
| Show |
|
159683 |
16 05 27 -19 48 07 |
MCA 42 CE |
2023 |
31 |
91 |
0.1 |
4.52 |
6.60 |
2.08 |
Y |
<=== |
Sextuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
NSV7424 Sco |
|
Constellation |
Scorpius |
|
SAO |
159683 |
|
HIP |
78821 |
|
| Tycho2 |
6208-01622-1 |
|
Gaia DR2 |
6247207266944651648 |
|
HD |
144218 |
|
HR |
5985 |
|
| GC |
21610 |
|
ADS |
9913 |
|
BD |
BD-19 4308 |
|
Bayer |
Beta 2 Scorpii |
|
| Bayer name |
Bet2 Sco |
|
Flamsteed |
8 Scorpii |
|
Flamsteed name |
8 Sco |
|
Distance |
122.1 |
|
| Distance ly |
398.29 |
|
Bayer greek |
β2 Sco |
|
ORBITAL ELEMENTS
| Period (P) | 18.953y | ± 0.064 |
Periastron (T) | 2006y | ± 0.12 |
Semi-major axis (a) | 0.1047a | ± 0.0016 |
| Eccentricity (e) | 0.61 | ± 0.01 |
Inclination (i) | 45.4° | ± 1.3 |
Longitude of periastron (ω) | 80.8° | ± 1.7 |
| Node (Ω) | 108° | ± 2.9 |
Notes | n | |
Reference | Tok2024c | |
| Equinox | | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
35.4 |
0.109 |
| 2001 |
45.6 |
0.104 |
| 2002 |
56.8 |
0.098 |
| 2003 |
69.8 |
0.090 |
| 2004 |
85.9 |
0.078 |
| 2005 |
110.7 |
0.058 |
| 2006 |
185.0 |
0.029 |
| 2007 |
271.9 |
0.056 |
| 2008 |
296.2 |
0.083 |
| 2009 |
310.0 |
0.100 |
| 2010 |
320.4 |
0.110 |
| 2011 |
329.4 |
0.117 |
| 2012 |
337.6 |
0.120 |
| 2013 |
345.5 |
0.122 |
| 2014 |
353.3 |
0.122 |
| 2015 |
1.2 |
0.121 |
| 2016 |
9.3 |
0.119 |
| 2017 |
17.7 |
0.116 |
| 2018 |
26.5 |
0.113 |
| 2019 |
35.9 |
0.109 |
| 2020 |
46.1 |
0.104 |
| 2021 |
57.4 |
0.098 |
| 2022 |
70.4 |
0.090 |
| 2023 |
86.8 |
0.078 |
| 2024 |
112.4 |
0.056 |
| 2025 |
191.5 |
0.029 |
| 2026 |
273.6 |
0.057 |
| 2027 |
297.0 |
0.084 |
| 2028 |
310.5 |
0.100 |
| 2029 |
320.9 |
0.111 |
| 2030 |
329.8 |
0.117 |
| 2031 |
338.0 |
0.120 |
| 2032 |
345.9 |
0.122 |
| 2033 |
353.7 |
0.122 |
| 2034 |
1.6 |
0.121 |
| 2035 |
9.7 |
0.119 |
| 2036 |
18.1 |
0.116 |
| 2037 |
26.9 |
0.113 |
| 2038 |
36.4 |
0.109 |
| 2039 |
46.6 |
0.104 |
| 2040 |
58.0 |
0.098 |
| 2041 |
71.1 |
0.090 |
| 2042 |
87.7 |
0.077 |
| 2043 |
114.2 |
0.055 |
| 2044 |
198.1 |
0.029 |
| 2045 |
275.3 |
0.059 |
| 2046 |
297.8 |
0.085 |
| 2047 |
311.1 |
0.101 |
| 2048 |
321.3 |
0.111 |
| 2049 |
330.2 |
0.117 |
| 2050 |
338.4 |
0.120 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
