02542+6039 ES 1815AB

 
 
02h 54m 10.67s +60 39' 03.5" P.A. 233 sep 6.8 mag 8.52,10.20 Sp O7
 
 
Coord 2000
02542+6039
Discov num
ES 1815
Comp
AB
Coord arcsec 2000
02 54 10.67 +60 39 03.5
Date first
1908
Date last
2011
Obs
5
Pa first
240
Pa last
233
P.A. Now (θ)
233°
Sep first
7.3
Sep last
6.8
Sep. Now (ρ)
6.8"
Mag pri
8.52
Mag sec
10.20
delta mag (ΔM)
1.68
Spectral class
O7 (blue)
Pri motion ra
+001
Sec motion ra
Pri motion dec
+003
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
02542+6039 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 12499 02542+6039 ES 1815 AB 1908 2011 5 233 6.8 8.52 10.20 1.68 <===
Show 12499 02542+6039 ES 1815 AC 1899 2016 9 53 16.0 8.52 13.20 4.68
Show 12499 02542+6039 MZA 13 AD 1999 2008 2 105 7.0 8.52 15.60 7.08
Show 12499 02542+6039 MZA 13 AE 1999 2008 2 64 19.3 8.52 15.60 7.08
Show 12499 02542+6039 MZA 13 AG 1999 2008 2 20 9.3 8.52 17.10 8.58
Show 12499 02542+6039 MZA 13 AH 1999 2008 2 343 10.0 8.52 17.30 8.78
Show 12499 02542+6039 MZA 13 CF 2008 2008 1 172 1.8 13.20 18.00 4.80
Octuple system
8 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
232.8
Precise sep
6.77
Constellation
Cassiopeia
SAO
12499
Tycho2
4048-00991-1
last precise pa
232.8
last precise sep
6.77
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02542+6039 ES 1815 AB 1999 3 233 7.2 8.52 10.20 O7 D 025410.67+603903.5
02542+6039 ES 1815 AB 2008 4 234 7.1 8.52 10.20 O7 D 025410.67+603903.5
02542+6039 ES 1815 AB 2011 5 233 6.8 8.52 10.20 O7 D 025410.67+603903.5

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