16545-4148 SNA  56Aa,Ab

 
 
16h 54m 32.00s -41 48' 18.8" P.A. 63 mag 7.60,8.70 Sp O9.5IV
 
 
Coord 2000
16545-4148
Discov num
SNA  56
Comp
Aa,Ab
Coord arcsec 2000
16 54 32.00 -41 48 18.8
Date first
2010
Date last
2016
Obs
11
Pa first
291
Pa last
63
P.A. Now (θ)
63°
Sep first
0.0
Sep last
0.0
Sep. Now (ρ)
0"
Mag pri
7.60
Mag sec
8.70
delta mag (ΔM)
1.1
Spectral class
O9.5IV (blue)
Pri motion ra
-002
Sec motion ra
Pri motion dec
+000
Sec motion dec
Notes
N V K (See Notes, Proper motion indicates physical, K-band or other infrared magnitudes)
This double is physical.
 
 
16545-4148 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 227400 16545-4148 SNA 56 Aa,Ab 2010 2016 11 63 0.0 7.60 8.70 1.10 <===
Show 227400 16545-4148 SNA 56 AB 2011 2011 1 187 3.2 7.24 11.06 3.82
Show 227400 16545-4148 SNA 56 AC 2011 2011 1 141 3.5 7.24 14.88 7.64
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Scorpius
SAO
227400
Tycho2
7876-01997-1
HD
152314
last precise pa
62.6
last precise sep
0.004
 
 
ORBITAL ELEMENTS
 
 
Period (P)3749d (10.26y)± 13 Periastron (T)56886d (2014.624y)± 12 Semi-major axis (a)9.365m± 0.091
Eccentricity (e)0.4948± 0.0081 Inclination (i)105.55°± 0.66 Longitude of periastron (ω)310.5°± 1.8
Node (Ω)98.23°± 0.76 Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation
label rho theta
2000 0.011 290.4
2001 0.012 285.0
2002 0.011 279.5
2003 0.007 271.2
2004 0.001 188.5
2005 0.006 93.8
2006 0.004 66.6
2007 0.003 1.6
2008 0.005 315.7
2009 0.008 300.1
2010 0.011 292.0
2011 0.012 286.3
2012 0.011 281.1
2013 0.009 274.1
2014 0.003 247.0
2015 0.005 100.2
2016 0.005 75.9
2017 0.003 22.2
2018 0.005 323.1
2019 0.008 303.1
2020 0.010 293.8
2021 0.012 287.7
2022 0.012 282.5
2023 0.010 276.3
2024 0.005 261.7
2025 0.004 109.4
2026 0.005 83.1
2027 0.003 41.8
2028 0.004 333.3
2029 0.007 306.7
2030 0.009 295.8

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

grafico orbita





grafico misure orbit6
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
16545-4148 SNA 56 Aa,Ab 2012 1 277 0.0 7.60 8.70 O9.5IV V K 165432.00-414818.8

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