16054-1948 OCC 9158 Aa,Ab
16h 05m 26.23s -19° 48' 19.4" P.A. -1.00 sep 0.0 mag 2.90,4.10 Sp B0.5V dist. 123.92 pc (404.23 l.y.)
| Coord 2000 |
16054-1948 |
|
Discov num |
OCC9158 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
16 05 26.23 -19 48 19.4 |
|
| Date first |
1976 |
|
Date last |
1976 |
|
Obs |
0 |
|
| Pa first |
-1 |
|
Pa last |
-1 |
|
P.A. Now (θ) |
-1 |
|
| Sep first |
0.0 |
|
Sep last |
0.001 |
|
Sep. Now (ρ) |
0.001" |
|
| Mag pri |
2.90 |
|
Mag sec |
4.10 |
|
delta mag (ΔM) |
1.2 |
|
Spectral class |
B0.5V (blue-white) |
|
| Pri motion ra |
-007 |
|
Sec motion ra |
|
|
| Pri motion dec |
-025 |
|
Sec motion dec |
|
|
| Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
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
| Common name |
Acrab |
|
Var name |
NSV7424 Sco |
|
Constellation |
Scorpius |
|
SAO |
159682 |
|
| HIP |
78820 |
|
Tycho2 |
6208-01623-1 |
|
Gaia DR2 |
6247207266936828288 |
|
HD |
144217 |
|
| HR |
5984 |
|
GC |
21609 |
|
ADS |
9913 |
|
BD |
BD-19 4307 |
|
| CP |
CP-19 5945 |
|
Bayer |
Beta 1 Scorpii |
|
Bayer name |
Bet1 Sco |
|
Flamsteed |
8 Scorpii |
|
| Flamsteed name |
8 Sco |
|
FK5 |
597 |
|
Distance |
123.92 |
|
Distance ly |
404.23 |
|
| Bayer greek |
β1 Sco |
|
| Other names |
Graffias, Grafias, Akrab, Elacrab |
|
SUSPECTED ORBITAL ELEMENTS
| Identifier | 16054-1948 |
| coord_arcsec_2000 | 160526.23-194819.4 |
| Period (P) | 6.82825d | |
Periastron (T) | 49788.509d (1995.192y) | ± 0.019 |
Semi-major axis (a) | 1.42m | ± 0.02 |
| Eccentricity (e) | 0.291 | ± 0.006 |
Inclination (i) | 111.8° | ± 0.7 |
Longitude of periastron (ω) | 54.8° | ± 1.3 |
| Node (Ω) | 294.2° | ± 0.8 |
Notes | n | |
Reference | Hol1997 | |
| Equinox | | |
Last observation | | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
125.0 |
0.001 |
| 2001-01-01 |
19.7 |
0.001 |
| 2002-01-01 |
128.8 |
0.001 |
| 2003-01-01 |
32.6 |
0.001 |
| 2004-01-01 |
133.8 |
0.001 |
| 2005-01-01 |
44.5 |
0.001 |
| 2006-01-01 |
140.6 |
0.001 |
| 2007-01-01 |
54.7 |
0.001 |
| 2008-01-01 |
151.0 |
0.001 |
| 2009-01-01 |
63.2 |
0.001 |
| 2010-01-01 |
168.0 |
|
| 2011-01-01 |
70.2 |
0.001 |
| 2012-01-01 |
196.1 |
|
| 2013-01-01 |
76.1 |
0.001 |
| 2014-01-01 |
229.4 |
|
| 2015-01-01 |
81.0 |
0.001 |
| 2016-01-01 |
253.6 |
0.001 |
| 2017-01-01 |
85.1 |
0.001 |
| 2018-01-01 |
268.2 |
0.001 |
| 2019-01-01 |
88.7 |
0.001 |
| 2020-01-01 |
277.5 |
0.001 |
| 2021-01-01 |
91.9 |
0.001 |
| 2022-01-01 |
284.1 |
0.001 |
| 2023-01-01 |
94.7 |
0.001 |
| 2024-01-01 |
289.4 |
0.001 |
| 2025-01-01 |
97.3 |
0.001 |
| 2026-01-01 |
293.9 |
0.001 |
| 2027-01-01 |
99.6 |
0.002 |
| 2028-01-01 |
298.0 |
0.001 |
| 2029-01-01 |
101.8 |
0.002 |
| 2030-01-01 |
302.0 |
0.001 |
|
|
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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