18309+3840 STF2338AB

 
 
18h 30m 54.75s +38 39' 33.8" P.A. 300 sep 12.1 mag 9.30,11.20 Sp K2
 
 
Coord 2000
18309+3840
Discov num
STF2338
Comp
AB
Coord arcsec 2000
18 30 54.75 +38 39 33.8
Date first
1828
Date last
2013
Obs
20
Pa first
302
Pa last
300
P.A. Now (θ)
300°
Sep first
10.0
Sep last
12.1
Sep. Now (ρ)
12.1"
Mag pri
9.30
Mag sec
11.20
delta mag (ΔM)
1.9
Spectral class
K2 (yellow-orange)
Pri motion ra
-011
Sec motion ra
+000
Pri motion dec
-007
Sec motion dec
-009
Notes
N (See Notes)
rPM=0.857
This double is not physical.
 
 
18309+3840 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18309+3840 STF2338 AB 1828 2013 20 300 12.1 9.30 11.20 1.90 <===
Show 18309+3840 STF2338 AC 1863 2013 20 206 76.4 9.30 9.62 0.32
Show 18309+3840 STF2338 AE 1982 2013 7 154 51.9 9.30 13.00 3.70
Show 67056 18309+3840 STF2338 CD 1904 2002 2 243 13.1 9.62 14.80 5.18
Show 67056 18309+3840 STF2338 CE 1982 2013 7 69 60.8 9.62 13.00 3.38
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
300.2
Precise sep
12.06
Cdsa2 id
STF 2338 AB
Constellation
Lyra
Tycho2
3105-00683-1
Ra deg
18.515208333333334
De deg
38.659388888888884
last precise pa
300.2
last precise sep
12.06
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18309+3840 STF2338 AB 2006 16 301 12.2 9.90 11.20 K2 N D 183054.75+383933.8
18309+3840 STF2338 AB 2012 19 300 12.2 9.30 11.20 K2 N D 183054.75+383933.8
18309+3840 STF2338 AB 2013 20 300 12.1 9.30 11.20 K2 N D 183054.75+383933.8

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