04220+2818 ITO  21AB (V987 Tau)

 
 
04H 21M 58.84S +28 18' 06.6" P.A. 56 SEP 5.7 MAG 7.01,15.87 SP G5IV DIST. 127.88 PC (417.14 L.Y.)
 
 
Coord 2000
04220+2818
Discov num
ITO  21
Comp
AB
Coord arcsec 2000
04 21 58.84 +28 18 06.6
Date first
1997
Date last
2003
Obs
2
Pa first
57
Pa last
56
P.A. Now (θ)
56°
Sep first
5.6
Sep last
5.7
Sep. Now (ρ)
5.7"
Mag pri
7.01
Mag sec
15.87
delta mag (ΔM)
8.86
Spectral class
G5IV (yellow)
Pri motion ra
+007
Sec motion ra
Pri motion dec
-027
Sec motion dec
Notes
N K (See Notes, K-band or other infrared magnitudes)
Nature of this double is uncertain.
 
 
04220+2818 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show V987 Tau 76567 04220+2818 ITO 21 AB 1997 2003 2 56 5.7 7.01 15.87 8.86 <===
Show 76567 04220+2818 ITO 21 AC 1997 2011 3 152 8.1 7.01 16.73 9.72
Show 76567 04220+2818 ITO 21 AD 1997 2011 3 14 6.5 7.01 17.73 10.72
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name
V987 Tau
Constellation
Taurus
SAO
76567
HIP
20388
Tycho2
1828-00481-1
HD
283572
BD
BD+27 657
Distance
127.88
Distance ly
417.14
last precise pa
56
last precise sep
5.68