17364+6820 ENG  61AB

 
 
17h 36m 42.10s +68 22' 59.0" P.A. 210 sep 180.4 mag 8.09,9.33 Sp F5V+M3.5V dist. 88.81 pc (289.7 l.y.)
 
 
Coord 2000
17364+6820
Discov num
ENG  61
Comp
AB
Coord arcsec 2000
17 36 42.10 +68 22 59.0
Date first
1877
Date last
1999
Obs
15
Pa first
280
Pa last
210
P.A. Now (θ)
210°
Sep first
49.6
Sep last
180.4
Sep. Now (ρ)
180.4"
Mag pri
8.09
Mag sec
9.33
delta mag (ΔM)
1.24
Spectral class
F5V+M3.5V (yellow-white/red)
Pri motion ra
+000
Sec motion ra
-032
Pri motion dec
+008
Sec motion dec
-127
Notes
N L U P (See Notes, Linear solution, Proper motion indicates non-physical, 100-year proper motion)
rPM=1.059
This double is not physical.
 
 
17364+6820 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 17570 17364+6820 CHR 62 Aa,Ab 1984 1993 2 352 0.3 9.15 Y
Show 17570 17364+6820 ENG 61 AB 1877 1999 15 210 180.4 8.09 9.33 1.24 <===
Show 17570 17364+6820 STU 10 AC 1895 2004 7 95 177.4 8.09 11.38 3.29
Show 17568 17364+6820 STU 10 BC 1895 1999 6 62 301.6 9.33 11.38 2.05
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
209.7
Precise sep
180.39
Constellation
Draco
SAO
17570
HIP
86187
Tycho2
4428-01849-1
HD
160861
BD
BD+68 947
Distance
88.81
Distance ly
289.7
last precise pa
209.7
last precise sep
180.39
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17364+6820 ENG 61 AB 1999 15 210 180.3 8.09 9.33 NLDP 173642.10+682259.0

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