16540-4148 SNA 51 Fa,Fb

16h 54m 03.58s -41° 47' 29.9" P.A. 54.00 sep 0.0 mag 6.30,8.30 Sp O6Ib

Coord 2000 16540-4148 Discov num SNA  51 Comp Fa,Fb Coord arcsec 2000 16 54 03.58 -41 47 29.9
Date first 2011 Date last 2014 Obs 16
Pa first 46 Pa last 54.2 P.A. Now (θ) 54.2°
Sep first 0.0 Sep last 0.004 Sep. Now (ρ) 0.004"
Mag pri 6.30 Mag sec 8.30 delta mag (ΔM) 2 Spectral class O6Ib (blue)
Pri motion ra -002 Sec motion ra
Pri motion dec -009 Sec motion dec
Notes N V K (See Notes, Proper motion indicates physical, K-band or other infrared magnitudes)


Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes

This double is physical.



16540-4148 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 227377 16 54 02 -41 48 23 SNA 51 Aa,Ab 2011 1 153 0.0 5.10 7.00 1.90
Show HD 152234 227377 16 54 02 -41 48 23 B 1833 AB 2006 8 75 0.5 5.65 7.92 2.27
Show 227377 16 54 02 -41 48 23 B 1833 AC 2015 2 99 5.4 5.65 13.80 8.15
Show 227377 16 54 02 -41 48 23 SEE 293 AD 1999 4 127 19.1 5.66 13.70 8.04
Show 227377 16 54 02 -41 48 23 SEE 293 AE 1999 5 281 20.5 5.66 13.00 7.34
Show 227377 16 54 02 -41 48 23 JC 23 AF 2018 15 19 56.7 5.65 6.56 0.91
Show 227380 16 54 04 -41 47 30 SNA 51 Fa,Fb 2014 16 54 0.0 6.30 8.30 2.00 Y <===
Show 227380 16 54 04 -41 47 30 SEE 294 FG 2015 5 47 6.7 6.59 13.00 6.41
Show 227380 16 54 04 -41 47 30 HJ 4892 FH 2015 13 300 8.8 6.59 9.60 3.01


Decuple system
8 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Constellation Scorpius SAO 227380 Tycho2 7876-02254-1 Gaia DR2 5966510229078336768
HD 152233




ORBITAL ELEMENTS

Period (P)871.3d (2.39y)± 4.6 Periastron (T)56276d (2012.954y)± 11 Semi-major axis (a)4.15m± 0.09
Eccentricity (e)0.543± 0.011 Inclination (i)84.7°± 1.5 Longitude of periastron (ω)192°± 5.1
Node (Ω)49.4°± 1 Notesn ReferenceLeB2017
Equinox Last observation Grade5(1=Definitive, 9=Indet.)

label theta rho
2000-01-01 51.4 0.006
2001-01-01 229.0 0.002
2002-01-01 49.4 0.006
2003-01-01 61.4 0.002
2004-01-01 46.9 0.005
2005-01-01 53.0 0.005
2006-01-01 24.6 0.001
2007-01-01 50.6 0.006
2008-01-01 213.6 0.001
2009-01-01 48.6 0.006
2010-01-01 55.9 0.003
2011-01-01 44.9 0.003
2012-01-01 51.9 0.006
2013-01-01 233.7 0.002
2014-01-01 49.8 0.006
2015-01-01 69.8 0.001
2016-01-01 47.5 0.005
2017-01-01 53.7 0.004
2018-01-01 39.2 0.002
2019-01-01 51.0 0.006
2020-01-01 223.8 0.002
2021-01-01 49.0 0.006
2022-01-01 57.6 0.003
2023-01-01 46.0 0.004
2024-01-01 52.3 0.005
2025-01-01 247.3 0.001
2026-01-01 50.1 0.006
2027-01-01 121.2
2028-01-01 48.0 0.006
2029-01-01 54.5 0.004
2030-01-01 42.9 0.002


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



 
 


wds16540-4148a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic