11507+3312 SKF 8 AB

11h 50m 43.04s +33° 12' 18.1" P.A. 109.00 sep 7.1 mag 12.30,12.20 Sp M1+M1

Coord 2000 11507+3312 Discov num SKF   8 Comp AB Coord arcsec 2000 11 50 43.04 +33 12 18.1
Date first 1981 Date last 2019 Obs 19
Pa first 107 Pa last 108.5 P.A. Now (θ) 108.5°
Sep first 7.4 Sep last 7.097 Sep. Now (ρ) 7.097"
Mag pri 12.30 Mag sec 12.20 delta mag (ΔM) 0.1 Spectral class M1+M1 (red/red)
Pri motion ra -333 Sec motion ra -210
Pri motion dec -069 Sec motion dec +008
Notes V (Proper motion indicates physical)




rPM=0.427

This double is physical.



11507+3312 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 11 50 43 +33 12 18 RAO 579 Aa,Ab 2015 3 120 0.6 11.80 14.80 3.00
Show 11 50 43 +33 12 18 RAO 579 Aa,Ac 2014 1 357 0.5 11.80 15.00 3.20
Show 11 50 43 +33 12 18 SKF 8 AB 2019 19 109 7.1 12.30 12.20 0.10 <===
Show 11 50 43 +33 12 18 RAO 579 AC 2014 1 91 2.6 11.80 16.10 4.30


Quintuple system
3 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Constellation Ursa Major