17480+5707 MLB1077AB

 
 
17h 47m 57.47s +57 06' 40.0" P.A. 212 sep 4.6 mag 9.24,11.10 Sp G5
 
 
Coord 2000
17480+5707
Discov num
MLB1077
Comp
AB
Coord arcsec 2000
17 47 57.47 +57 06 40.0
Date first
1918
Date last
2015
Obs
8
Pa first
182
Pa last
212
P.A. Now (θ)
212°
Sep first
11.3
Sep last
4.6
Sep. Now (ρ)
4.6"
Mag pri
9.24
Mag sec
11.10
delta mag (ΔM)
1.86
Spectral class
G5 (yellow)
Pri motion ra
+020
Sec motion ra
Pri motion dec
-080
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
17480+5707 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 30580 17480+5707 MLB1077 AB 1918 2015 8 212 4.6 9.24 11.10 1.86 <===
Show 30580 17480+5707 MLB1077 AC 1918 2015 4 29 23.4 9.24 13.90 4.66
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
212.4
Precise sep
4.55
Cdsa2 id
MLB 1077 AB
Constellation
Draco
SAO
30580
Tycho2
3910-00595-1
HD
238759
Ra deg
17.799297222222222
De deg
57.111111111111114
last precise pa
212.4
last precise sep
4.55
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17480+5707 MLB1077 AB 1999 6 199 5.2 9.24 11.10 G5 D 174757.47+570639.9
17480+5707 MLB1077 AB 2011 7 209 5.2 9.24 11.10 G5 D 174757.47+570640.0
17480+5707 MLB1077 AB 2015 8 212 4.6 9.24 11.10 G5 174757.47+570640.0

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