21424+1750 BU 691 AE

21h 42m 25.22s +17° 50' 09.5" P.A. 80.00 sep 118.8 mag 8.90,12.30 Sp K0

Coord 2000 21424+1750 Discov num BU  691 Comp AE Coord arcsec 2000 21 42 25.22 +17 50 09.5
Date first 1900 Date last 2015 Obs 12
Pa first 68 Pa last 79.6 P.A. Now (θ) 79.6°
Sep first 90.3 Sep last 118.77 Sep. Now (ρ) 118.77"
Mag pri 8.90 Mag sec 12.30 delta mag (ΔM) 3.4 Spectral class K0 (yellow-orange)
Pri motion ra +024 Sec motion ra +264
Pri motion dec -006 Sec motion dec -112
Notes N U (See Notes, Proper motion indicates non-physical)




rPM=0.915

This double is not physical.



21424+1750 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 206556 107339 21 42 25 +17 50 10 HU 373 AB 2011 17 300 0.9 8.90 10.44 1.54
Show 107339 21 42 25 +17 50 10 BU 691 AC 2015 9 249 84.3 8.90 12.53 3.63
Show 107339 21 42 25 +17 50 10 BU 691 AE 2015 12 80 118.8 8.90 12.30 3.40 <===
Show 21 42 20 +17 49 39 FOX 9057 CD 2015 8 238 14.7 11.70 12.30 0.60


Quintuple system
5 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Constellation Pegasus SAO 107339 Tycho2 1669-00828-1 Gaia DR2 1774144371710713856
HD 206556