18301+0404 CHR  72Aa,Ab

 
 
18H 30M 05.12S +04 03' 55.3" P.A. 264 SEP 0.1 MAG 6.70,9.60 SP B2V DIST. 507.61 PC (1655.82 L.Y.)
 
 
Coord 2000
18301+0404
Discov num
CHR  72
Comp
Aa,Ab
Coord arcsec 2000
18 30 05.12 +04 03 55.3
Date first
1985
Date last
2015
Obs
13
Pa first
354
Pa last
264
P.A. Now (θ)
264°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
6.70
Mag sec
9.60
delta mag (ΔM)
2.9
Spectral class
B2V (blue-white)
Pri motion ra
+000
Sec motion ra
Pri motion dec
-009
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
18301+0404 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 123571 18301+0404 CHR 72 Aa,Ab 1985 2015 13 264 0.1 6.70 9.60 2.90 <===
Show 123571 18301+0404 STF2322 AB 1828 2012 28 316 1.8 6.67 11.28 4.61
Show 123571 18301+0404 STF2322 AC 1912 2009 9 295 67.7 6.67 12.79 6.12
Show 123571 18301+0404 STF2322 AD 1912 2009 7 197 85.3 6.67 13.39 6.72
Quintuple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Ophiuchus
SAO
123571
HIP
90676
Tycho2
0454-01662-1
HD
170580
HR
6941
BD
BD+03 3727
Distance
507.61
Distance ly
1655.82
last precise pa
264.1
last precise sep
0.091