18239+5848 STF 2323 AC

 
 
18h 23m 54.65s +58° 48' 02.1" P.A. 20.00 sep 88.9 mag 5.06,7.95 Sp A1V dist. 56.47 pc (184.21 l.y.)
 
 
Coord 2000 18239+5848 Discov num STF2323 Comp AC Coord arcsec 2000 18 23 54.65 +58 48 02.1
Date first 1823 Date last 2020 Obs 67
Pa first 22 Pa last 19.5 P.A. Now (θ) 19.5°
Sep first 90.2 Sep last 88.86 Sep. Now (ρ) 88.86"
Mag pri 5.06 Mag sec 7.95 delta mag (ΔM) 2.89 Spectral class A1V (white)
Pri motion ra -038 Sec motion ra -041
Pri motion dec +062 Sec motion dec +061
Notes N V (See Notes, Proper motion indicates physical)
rPM=0.043 (< 0.3, Physical double)
This double is physical.
 
 
18239+5848 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 39 Dra 30949 18 23 55 +58 48 02 STF 2323 AB 2020 146 348 3.6 5.06 8.07 3.01 Y
Show 30949 18 23 55 +58 48 02 STF 2323 AC 2020 67 20 88.9 5.06 7.95 2.89 <===
Show 30949 18 23 55 +58 48 02 STF 2323 AF 2008 3 80 150.5 5.06 12.90 7.84
Show 30949 18 23 55 +58 48 02 STF 2323 AG 2003 3 244 35.8 5.06 13.30 8.24
Show 30949 18 23 55 +58 48 02 STF 2323 AH 2000 2 93 44.2 5.06 14.40 9.34
Show 30950 18 23 55 +58 48 06 STF 2323 BC 2017 36 20 86.5 8.07 7.95 0.12
Show 30950 18 23 58 +58 49 26 STF 2323 CD 2015 10 68 198.2 7.90 11.00 3.10
Septuple system
7 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Draco SAO 30949 HIP 90156 Tycho2 3916-01982-1
Gaia DR2 2157548616097840000 HD 170073 HR 6923 GC 25151
ADS 11336 BD BD+58 1809 Flamsteed 39 Draconis Flamsteed name 39 Dra
Distance 56.47 Distance ly 184.21