04220+2818 ITO  21AD

 
 
04h 21m 58.84s +28 18' 06.6" P.A. 14 sep 6.5 mag 7.01,17.73 Sp G5IV dist. 127.88 pc (417.14 l.y.)
 
 
Coord 2000
04220+2818
Discov num
ITO  21
Comp
AD
Coord arcsec 2000
04 21 58.84 +28 18 06.6
Date first
1997
Date last
2011
Obs
3
Pa first
16
Pa last
14
P.A. Now (θ)
14°
Sep first
6.1
Sep last
6.5
Sep. Now (ρ)
6.5"
Mag pri
7.01
Mag sec
17.73
delta mag (ΔM)
10.72
Spectral class
G5IV (yellow)
Pri motion ra
+007
Sec motion ra
Pri motion dec
-027
Sec motion dec
Notes
N U W K (See Notes, Proper motion indicates non-physical, , K-band or other infrared magnitudes)
This double is not physical.
 
 
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
 
 
Precise pa
14.2
Precise sep
6.53
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
14.2
last precise sep
6.53
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
04220+2818 ITO 21 AD 2003 2 16 6.3 7.01 17.73 G5IV K 042158.84+281806.6
04220+2818 ITO 21 AD 2011 3 14 6.5 7.01 17.73 G5IV U K 042158.84+281806.6

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