00457+7459 H N 122 (21 Cas)

 
 
00h 45m 39.08s +74 59' 17.1" P.A. 161 sep 35.9 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
2015
Obs
15
Pa first
160
Pa last
161
P.A. Now (θ)
161°
Sep first
36.6
Sep last
35.9
Sep. Now (ρ)
35.9"
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
160.6
Precise sep
35.882
Name
21 Cas
Other name
YZ Cas
Var name
YZ Cas
Constellation
Cassiopeia
SAO
4216
HIP
3572
Tycho2
4307-02167-1
Gaia DR2
5205648128
HD
4161
HR
192
GC
891
BD
BD+74 27
Flamsteed
21 Cassiopeiae
Flamsteed name
21 Cas
Distance
93.02
Distance ly
303.43
 
 
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
00457+7459 H N 122 2015 14 161 35.9 5.66 10.57 A2IV N 004539.08+745917.1

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