17240-1142 BU 242 AD

17h 24m 02.80s -11° 42' 06.9" P.A. 61.00 sep 48.3 mag 8.71,10.53 Sp A2

Coord 2000 17240-1142 Discov num BU  242 Comp AD Coord arcsec 2000 17 24 02.80 -11 42 06.9
Date first 1876 Date last 2017 Obs 19
Pa first 64 Pa last 61.1 P.A. Now (θ) 61.1°
Sep first 47.5 Sep last 48.292 Sep. Now (ρ) 48.292"
Mag pri 8.71 Mag sec 10.53 delta mag (ΔM) 1.82 Spectral class A2 (white)
Pri motion ra -004 Sec motion ra +001
Pri motion dec -008 Sec motion dec +005
Notes




rPM=1.557

This double is not physical.



17240-1142 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 157499 160518 17 24 03 -11 42 07 BU 242 AB 2019 29 79 1.2 8.69 9.48 0.79
Show 160518 17 24 03 -11 42 07 BU 242 AC 2017 18 64 9.1 8.71 11.12 2.41
Show 160518 17 24 03 -11 42 07 BU 242 AD 2017 19 61 48.3 8.71 10.53 1.82 <===


Quadruple system
4 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Constellation Serpens SAO 160518 Tycho2 5666-00757-1 Gaia DR2 4141883292802888832