05387-0236 BU 1032 AB

 
 
05h 38m 44.77s -02° 36' 00.2" P.A. 70.00 sep 0.3 mag 4.07,5.27 Sp +B? dist. 328.95 pc (1073.03 l.y.)
 
 
Coord 2000 05387-0236 Discov num BU 1032 Comp AB Coord arcsec 2000 05 38 44.77 -02 36 00.2
Date first 1888 Date last 2018 Obs 179
Pa first 358 Pa last 69.8 P.A. Now (θ) 58.6°
Sep first 0.2 Sep last 0.258 Sep. Now (ρ) 0.257"
Mag pri 4.07 Mag sec 5.27 delta mag (ΔM) 1.2 Spectral class +B?
Pri motion ra +004 Sec motion ra
Pri motion dec -000 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
05387-0236 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 132406 05 38 45 -02 36 00 NOI 6 Aa,Ab 2013 26 164 0.0 4.07 Y
Show 132406 05 38 45 -02 36 00 BU 1032 AB 2018 179 70 0.3 4.07 5.27 1.20 Y <===
Show Sig Ori 132406 05 38 45 -02 36 00 STF 762 AB,C 2019 46 239 11.4 3.76 8.79 5.03
Show 132406 05 38 45 -02 36 00 STF 762 AB,D 2019 91 83 12.9 3.76 6.56 2.80
Show 132406 05 38 45 -02 36 00 STF 762 AB,E 2019 82 62 41.4 3.76 6.34 2.58
Show 132406 05 38 45 -02 36 00 STF 3135 AB,F 2016 13 324 208.0 3.76 7.86 4.10
Show 132406 05 38 45 -02 36 00 TRN 19 AB,G 2008 4 20 3.2 3.76 12.00 8.24
Show 132406 05 38 45 -02 36 00 SHJ 65 AB,H 2016 7 125 306.9 3.76 8.06 4.30
Show 132406 05 38 45 -02 36 00 SHJ 65 AB,I 2016 6 60 524.7 3.76 8.44 4.68
Show 05 38 44 -02 36 06 CAB 26 Ca,Cb 2007 2 12 2.0 9.10 14.50 5.40
Show 05 38 46 -02 35 59 STF 762 DC 2019 34 252 23.8 6.56 8.79 2.23
Show 132408 05 38 47 -02 35 40 RAS 22 Ea,Eb 2010 3 303 0.3 6.60 11.30 4.70
Show 132408 05 38 47 -02 35 40 STF 762 EC 2019 26 241 52.9 6.34 8.79 2.45
Show 132408 05 38 47 -02 35 40 STF 762 ED 2019 56 232 29.8 6.34 6.56 0.22
Show 05 39 01 -02 38 56 CAB 26 Ha,Hb 2003 0 -1 0.5 13.34
Show 05 38 45 -02 37 57 BOY 24 Ja,Jb 2007 2 317 0.2 10.60 12.80 2.20
16-fold system
10 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name V1030 Ori Constellation Orion SAO 132406 HIP 26549
Tycho2 4771-01196-1 Gaia DR2 3216486439446556544 HD 37468 HR 1931
GC 7031 ADS 4241 BD BD-02 1326 Bayer Sigma Orionis
Bayer name Sig Ori Flamsteed 48 Orionis Flamsteed name 48 Ori Distance 328.95
Distance ly 1073.03 Bayer greek σ Ori
 
 
ORBITAL ELEMENTS
 
 
Period (P)58402d (159.9y)± 2 Periastron (T)51255d (1999.207y)± 39 Semi-major axis (a)0.2629a± 0.0022
Eccentricity (e)0.024± 0.005 Inclination (i)172.1°± 4.6 Longitude of periastron (ω)187.4°± 9.9
Node (Ω)301.6°± 10.4 Notesn ReferenceNOI2016b
Equinox2000 Last observation2011 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 112.4 0.257
2001 110.1 0.257
2002 107.7 0.256
2003 105.4 0.256
2004 103.0 0.256
2005 100.7 0.256
2006 98.4 0.256
2007 96.0 0.256
2008 93.7 0.256
2009 91.3 0.256
2010 89.0 0.256
2011 86.6 0.256
2012 84.3 0.257
2013 82.0 0.257
2014 79.6 0.257
2015 77.3 0.257
2016 74.9 0.257
2017 72.6 0.257
2018 70.3 0.257
2019 67.9 0.257
2020 65.6 0.257
2021 63.3 0.257
2022 60.9 0.257
2023 58.6 0.257
2024 56.3 0.257
2025 53.9 0.258
2026 51.6 0.258
2027 49.3 0.258
2028 47.0 0.258
2029 44.7 0.258
2030 42.4 0.258


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



 
 


wds05387-0236b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic