00457+7459 H N 122 (21 Cas)

 
 
00h 45m 39.08s +74 59' 17.1" P.A. 161 sep 36 mag 5.66,10.57 Sp A2IV dist. 93.02 pc (303.43 l.y.)
 
 
Coord 2000
00457+7459
Discov num
H N 122
Comp
Coord arcsec 2000
00 45 39.08 +74 59 17.1
Date first
1896
Date last
2010
Obs
13
Pa first
160
Pa last
161
P.A. Now (θ)
161°
Sep first
36.6
Sep last
36.0
Sep. Now (ρ)
36"
Mag pri
5.66
Mag sec
10.57
delta mag (ΔM)
4.91
Spectral class
A2IV (white)
Pri motion ra
-015
Sec motion ra
-012
Pri motion dec
-022
Sec motion dec
-025
Notes
N (See Notes)
rPM=0.153 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
160.7
Precise sep
36
Name
21 Cas
Other name
YZ Cas
Var name
YZ Cas
Cdsa2 id
H N 122
Constellation
Cassiopeia
SAO
4216
HIP
3572
Tycho2
4307-02167-1
HD
4161
HR
192
GC
891
BD
BD+74 27
Flamsteed
21 Cassiopeiae
Flamsteed name
21 Cas
Ra deg
0.7608555555555555
De deg
74.98808333333334
Distance
93.02
Distance ly
303.43
last precise pa
160.7
last precise sep
36
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
00457+7459 H N 122 1999 11 160 35.9 5.66 10.57 A2IV N D 004539.08+745917.1
00457+7459 H N 122 2003 12 160 35.3 5.66 10.57 A2IV N D 004539.08+745917.1
00457+7459 H N 122 2010 13 161 36.0 5.66 10.57 A2IV N 004539.08+745917.1

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