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
Cdsa2 id
ITO 21 AD
Constellation
Taurus
SAO
76567
HIP
20388
Tycho2
1828-00481-1
HD
283572
BD
BD+27 657
Ra deg
4.366344444444444
De deg
28.301833333333335
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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