15569-3358 PZ 4 (Xi1 Lup)

15h 56m 53.49s -33° 57' 58.0" P.A. 50.00 sep 10.2 mag 5.09,5.56 Sp A3V+B9V dist. 42.37 pc (138.21 l.y.)

Coord 2000 15569-3358 Discov num PZ    4 Comp Coord arcsec 2000 15 56 53.49 -33 57 58.0
Date first 1826 Date last 2020 Obs 51
Pa first 53 Pa last 49.5 P.A. Now (θ) 49.5°
Sep first 11.7 Sep last 10.15 Sep. Now (ρ) 10.15"
Mag pri 5.09 Mag sec 5.56 delta mag (ΔM) 0.47 Spectral class A3V+B9V (white/blue-white)
Pri motion ra +024 Sec motion ra +020
Pri motion dec -046 Sec motion dec -050
Notes N Z (See Notes, Parallax indicates components are physical)




rPM=0.105 (< 0.3, Physical double)

This double is physical.



OTHER CATALOGS AND DESIGNATIONS

Name Xi1 Lup Constellation Lupus SAO 207144 HIP 78105
Tycho2 7337-01461-1 Gaia DR2 6012174802400278016 HD 142629 HR 5925
GC 21395 CD CD-3310826 Bayer Xi 1 Lupi Bayer name Xi1 Lup
Distance 42.37 Distance ly 138.21 Bayer greek ξ1 Lup