15155+3319 SMR  31AC

 
 
15h 15m 30.16s +33 18' 53.4" P.A. 5 sep 93.5 mag 3.56,14.30 Sp G8IIICN-1 dist. 37.34 pc (121.8 l.y.)
 
 
Coord 2000
15155+3319
Discov num
SMR  31
Comp
AC
Coord arcsec 2000
15 15 30.16 +33 18 53.4
Date first
2002
Date last
2017
Obs
4
Pa first
5
Pa last
5
P.A. Now (θ)
Sep first
92.4
Sep last
93.5
Sep. Now (ρ)
93.5"
Mag pri
3.56
Mag sec
14.30
delta mag (ΔM)
10.74
Spectral class
G8IIICN-1 (yellow)
Pri motion ra
+085
Sec motion ra
+023
Pri motion dec
-111
Sec motion dec
-031
Notes
N (See Notes)
rPM=0.724
Nature of this double is uncertain.
 
 
15155+3319 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Del Boo 64589 15155+3319 STFA 27 AB 1780 2017 117 78 105.0 3.56 7.89 4.33 Y
Show 15155+3319 SMR 31 AC 2002 2017 4 5 93.5 3.56 14.30 10.74 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
4.5
Precise sep
93.46
Constellation
Bootes
SAO
64589
HIP
74666
Tycho2
2566-01639-1
Gaia DR2
75716738560
HD
135722
HR
5681
GC
20523
BD
BD+33 2561
Bayer
Delta Bootis
Bayer name
Del Boo
Flamsteed
49 Bootis
Flamsteed name
49 Boo
Distance
37.34
Distance ly
121.8
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15155+3319 SMR 31 AC 2012 1 5 91.6 3.56 14.30 G8IIICN-1 151530.16+331853.4
15155+3319 SMR 31 AC 2013 2 5 92.4 3.56 14.30 G8IIICN-1 151530.16+331853.4
15155+3319 SMR 31 AC 2017 4 5 93.5 3.56 14.30 G8IIICN-1 N 151530.16+331853.4

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