16054-1948 BU  947AB (Bet1 Sco)

 
 
16h 05m 26.23s -19 48' 19.4" P.A. 171 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
2000
Obs
41
Pa first
89
Pa last
171
P.A. Now (θ)
171°
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 Bet1 Sco 159682 16054-1948 BU 947 AB 1879 2000 41 171 0.3 2.62 10.60 7.98 Y <===
Show 159682 16054-1948 H 3 7 AC 1779 2016 136 20 13.9 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 2014 22 12 0.1 4.52 6.60 2.08 Y
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
170.5
Precise sep
0.292
Name
Bet1 Sco
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
Distance
123.92
Distance ly
404.23
last precise pa
170.5
last precise sep
0.292
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
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 Note Grade9(1=Definitive, 9=Indet.)
Equinox Last observation
label rho theta
2000-01-01 0.001 125.0
2001-01-01 0.001 19.7
2002-01-01 0.001 128.8
2003-01-01 0.001 32.6
2004-01-01 0.001 133.8
2005-01-01 0.001 44.5
2006-01-01 0.001 140.6
2007-01-01 0.001 54.7
2008-01-01 0.001 151.0
2009-01-01 0.001 63.2
2010-01-01 168.0
2011-01-01 0.001 70.2
2012-01-01 196.1
2013-01-01 0.001 76.1
2014-01-01 229.4
2015-01-01 0.001 81.0
2016-01-01 0.001 253.6
2017-01-01 0.001 85.1
2018-01-01 0.001 268.2
2019-01-01 0.001 88.7
2020-01-01 0.001 277.5
2021-01-01 0.001 91.9
2022-01-01 0.001 284.1
2023-01-01 0.001 94.7
2024-01-01 0.001 289.4
2025-01-01 0.001 97.3
2026-01-01 0.001 293.9
2027-01-01 0.002 99.6
2028-01-01 0.001 298.0
2029-01-01 0.002 101.8
2030-01-01 0.001 302.0

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

grafico orbita





wds16054-1948r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
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

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