02557+3028 COU 555AB

 
 
02h 55m 38.99s +30 28' 03.2" P.A. 280 sep 1.7 mag 8.74,12.70 Sp F8
 
 
Coord 2000
02557+3028
Discov num
COU 555
Comp
AB
Coord arcsec 2000
02 55 38.99 +30 28 03.2
Date first
1971
Date last
2009
Obs
5
Pa first
281
Pa last
280
P.A. Now (θ)
280°
Sep first
1.2
Sep last
1.7
Sep. Now (ρ)
1.7"
Mag pri
8.74
Mag sec
12.70
delta mag (ΔM)
3.96
Spectral class
F8 (yellow-white)
Pri motion ra
+082
Sec motion ra
Pri motion dec
-017
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
02557+3028 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 56006 02557+3028 COU 555 AB 1971 2009 5 280 1.7 8.74 12.70 3.96 <===
Show 56006 02557+3028 GII 2 Ba,Bb 2008 2008 4 155 0.5 13.40 13.80 0.40
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
280.4
Precise sep
1.72
Constellation
Aries
SAO
56006
Tycho2
2326-01292-1
HD
18128
last precise pa
280.4
last precise sep
1.72
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02557+3028 COU 555 AB 1997 2 285 1.7 8.74 12.70 F8 025538.99+302803.2
02557+3028 COU 555 AB 2008 4 280 1.7 8.74 12.70 F8 025538.99+302803.2
02557+3028 COU 555 AB 2009 5 280 1.7 8.74 12.70 F8 025538.99+302803.2

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