16054-1948 BU  947AB (Bet1 Sco)

 
 
16h 05m 26.23s -19 48' 19.4" P.A. 211 sep 0.3 mag 2.62,10.60 Sp B0.5V dist. 123.92 pc (404.23 l.y.)
 
 
Coord 2000
16054-1948
Discov num
BU  947
Comp
AB
Coord arcsec 2000
16 05 26.23 -19 48 19.4
Date first
1879
Date last
2017
Obs
43
Pa first
89
Pa last
211
P.A. Now (θ)
211°
Sep first
0.8
Sep last
0.3
Sep. Now (ρ)
0.3"
Mag pri
2.62
Mag sec
10.60
delta mag (ΔM)
7.98
Spectral class
B0.5V (blue-white)
Pri motion ra
-007
Sec motion ra
Pri motion dec
-025
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
16054-1948 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 159682 16054-1948 OCC9158 Aa,Ab 1976 1976 0 0.0 2.90 4.10 1.20 Y
Show Bet1 Sco 159682 16054-1948 BU 947 AB 1879 2017 43 211 0.3 2.62 10.60 7.98 Y <===
Show 159682 16054-1948 H 3 7 AC 1779 2017 137 20 13.7 2.59 4.52 1.93
Show 159682 16054-1948 PWL9001 AD 1860 2000 4 30 519.2 2.62 7.50 4.88
Show 159683 16054-1948 MCA 42 CE 1971 2017 24 18 0.1 4.52 6.60 2.08 Y
Sextuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
210.9
Precise sep
0.304
Name
Bet1 Sco
Cdsa2 id
BU 947 AB
Constellation
Scorpius
SAO
159682
HIP
78820
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
Ra deg
16.090619444444442
De deg
-19.80538888888889
Distance
123.92
Distance ly
404.23
last precise pa
210.9
last precise sep
0.304
 
 
ORBITAL ELEMENTS
 
 
Period (P)635y Periastron (T)2619.3y Semi-major axis (a)0.988a
Eccentricity (e)0.325 Inclination (i)66.2° Longitude of periastron (ω)62.8°
Node (Ω)96.4° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2017
label rho theta
2000 0.289 165.2
2001 0.285 167.8
2002 0.283 170.4
2003 0.280 173.1
2004 0.278 175.8
2005 0.277 178.5
2006 0.276 181.3
2007 0.276 184.1
2008 0.277 186.8
2009 0.278 189.6
2010 0.279 192.3
2011 0.281 195.0
2012 0.284 197.6
2013 0.287 200.2
2014 0.291 202.8
2015 0.295 205.2
2016 0.299 207.6
2017 0.304 209.9
2018 0.310 212.2
2019 0.315 214.3
2020 0.321 216.4
2021 0.328 218.4
2022 0.335 220.4
2023 0.342 222.2
2024 0.349 224.0
2025 0.356 225.7
2026 0.364 227.3
2027 0.372 228.9
2028 0.380 230.4
2029 0.388 231.8
2030 0.396 233.2

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





wds16054-1948f.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16054-1948 BU 947 AB 2000 40 171 0.3 2.62 10.60 B1V NOD 160526.23-194819.4
16054-1948 BU 947 AB 2017 43 211 0.3 2.62 10.60 B0.5V NO 160526.23-194819.4

If you need more information about this double, apply for a data request form to the WDS.