16054-1948 MCA 42 CE
16h 05m 26.55s -19° 48' 06.6" P.A. 61.00 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 |
2021 |
|
Obs |
30 |
|
| Pa first |
308 |
|
Pa last |
61 |
|
P.A. Now (θ) |
81.7° |
|
| Sep first |
0.1 |
|
Sep last |
0.096 |
|
Sep. Now (ρ) |
0.086" |
|
| 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 |
2021 |
46 |
219 |
0.3 |
2.62 |
10.60 |
7.98 |
Y |
|
| Show |
Acrab |
159682 |
16 05 26 -19 48 19 |
H 3 7 AC |
2019 |
142 |
20 |
13.4 |
2.59 |
4.52 |
1.93 |
|
|
| Show |
|
159682 |
16 05 26 -19 48 19 |
PWL 9001 AD |
1998 |
3 |
30 |
518.2 |
2.62 |
7.50 |
4.88 |
|
|
| Show |
|
159683 |
16 05 27 -19 48 07 |
MCA 42 CE |
2021 |
30 |
61 |
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) | 19y | |
Periastron (T) | 2006.285y | |
Semi-major axis (a) | 0.111a | |
| Eccentricity (e) | 0.638 | |
Inclination (i) | 49.5° | |
Longitude of periastron (ω) | 262.1° | |
| Node (Ω) | 289.2° | |
Notes | | |
Reference | Tok2018e | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
35.3 |
0.111 |
| 2001 |
45.2 |
0.107 |
| 2002 |
55.8 |
0.102 |
| 2003 |
67.7 |
0.096 |
| 2004 |
81.7 |
0.086 |
| 2005 |
101.1 |
0.068 |
| 2006 |
148.5 |
0.034 |
| 2007 |
267.2 |
0.048 |
| 2008 |
295.8 |
0.081 |
| 2009 |
309.9 |
0.100 |
| 2010 |
320.2 |
0.111 |
| 2011 |
329.1 |
0.118 |
| 2012 |
337.3 |
0.121 |
| 2013 |
345.1 |
0.122 |
| 2014 |
352.9 |
0.122 |
| 2015 |
0.8 |
0.121 |
| 2016 |
8.9 |
0.119 |
| 2017 |
17.3 |
0.117 |
| 2018 |
26.1 |
0.114 |
| 2019 |
35.3 |
0.111 |
| 2020 |
45.2 |
0.107 |
| 2021 |
55.8 |
0.102 |
| 2022 |
67.7 |
0.096 |
| 2023 |
81.7 |
0.086 |
| 2024 |
101.1 |
0.068 |
| 2025 |
148.5 |
0.034 |
| 2026 |
267.2 |
0.048 |
| 2027 |
295.8 |
0.081 |
| 2028 |
309.9 |
0.100 |
| 2029 |
320.2 |
0.111 |
| 2030 |
329.1 |
0.118 |
|
|
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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