20302+1925 S   752AC

 
 
20h 30m 14.44s +19 25' 15.7" P.A. 288 sep 106.3 mag 6.80,7.30 Sp B7IV dist. 386.1 pc (1259.46 l.y.)
 
 
Coord 2000
20302+1925
Discov num
S   752
Comp
AC
Coord arcsec 2000
20 30 14.44 +19 25 15.7
Date first
1824
Date last
2015
Obs
31
Pa first
288
Pa last
288
P.A. Now (θ)
288°
Sep first
105.9
Sep last
106.3
Sep. Now (ρ)
106.3"
Mag pri
6.80
Mag sec
7.30
delta mag (ΔM)
0.5
Spectral class
B7IV (blue-white)
Pri motion ra
+003
Sec motion ra
+003
Pri motion dec
-005
Sec motion dec
-005
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
20302+1925 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20302+1925 BU 987 AB 1880 2018 12 128 2.5 6.80 11.10 4.30
Show 20302+1925 S 752 AC 1824 2015 31 288 106.3 6.80 7.30 0.50 <===
Show 20302+1925 FOX 254 AE 1913 2013 8 70 21.2 6.80 13.00 6.20
Show 20302+1925 FOX 254 CD 1913 2013 4 301 34.2 7.30 15.30 8.00
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
287.9
Precise sep
106.32
Constellation
Delphinus
SAO
106177
HIP
101154
Tycho2
1640-01818-1
Gaia DR2
92083365120
HD
195358
BD
BD+18 4517
Distance
386.1
Distance ly
1259.46
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20302+1925 S 752 AC 2001 25 288 106.7 6.80 7.30 B7IV N D 203014.44+192515.8
20302+1925 S 752 AC 2011 26 288 106.7 6.80 7.30 B7IV N D 203014.44+192515.7
20302+1925 S 752 AC 2012 28 288 106.5 6.80 7.30 B7IV N 203014.44+192515.7
20302+1925 S 752 AC 2015 31 288 106.3 6.80 7.30 B7IV N 203014.44+192515.7

If you need more information about this double, apply for a data request form to the WDS.