20273-1813 BU 60 AB (Pi Cap)

 
 
20h 27m 19.20s -18 12' 42.1" P.A. 148.00 sep 3.5 mag 5.13,8.53 Sp B8II-III dist. 167.22 pc (545.47 l.y.)
 
 
Coord 2000 20273-1813 Discov num BU   60 Comp AB Coord arcsec 2000 20 27 19.20 -18 12 42.1
Date first 1846 Date last 2019 Obs 69
Pa first 145 Pa last 147.8 P.A. Now (θ) 147.8°
Sep first 2.9 Sep last 3.459 Sep. Now (ρ) 3.459"
Mag pri 5.13 Mag sec 8.53 delta mag (ΔM) 3.4 Spectral class B8II-III (blue-white)
Pri motion ra +011 Sec motion ra +010
Pri motion dec -012 Sec motion dec -011
Notes N (See Notes)
rPM=0.087 (< 0.3, Physical double)
This double is physical.
 
 
20273-1813 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 163592 20 27 19 -18 12 42 CHR 184 Aa,Ab 2009 2 50 0.1 5.30 7.90 2.60
Show Pi Cap 163592 20 27 19 -18 12 42 BU 60 AB 2019 69 148 3.5 5.13 8.53 3.40 <===
Show 163592 20 27 19 -18 12 42 BU 296 AC 1999 4 40 37.9 5.13 14.10 8.97
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Pi Cap Constellation Capricornus SAO 163592 HIP 100881
Tycho2 6333-02129-2 Gaia DR2 6860902873140593152 HD 194636 HR 7814
GC 28442 ADS 13860 BD BD-18 5685 Bayer Pi Capricorni
Bayer name Pi Cap Flamsteed 10 Capricorni Flamsteed name 10 Cap Distance 167.22
Distance ly 545.47 Bayer greek π Cap