00220+4213 HJ 1021

 
 
00h 21m 57.78s +42 12' 34.8" P.A. 247 sep 6 mag 9.68,10.10 Sp A2
 
 
Coord 2000
00220+4213
Discov num
HJ 1021
Comp
Coord arcsec 2000
00 21 57.78 +42 12 34.8
Date first
1828
Date last
2015
Obs
13
Pa first
247
Pa last
247
P.A. Now (θ)
247°
Sep first
4.0
Sep last
6.0
Sep. Now (ρ)
6"
Mag pri
9.68
Mag sec
10.10
delta mag (ΔM)
0.42
Spectral class
A2 (white)
Pri motion ra
+009
Sec motion ra
+009
Pri motion dec
-003
Sec motion dec
-006
Notes
rPM=0.277 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
247.1
Precise sep
6.016
Constellation
Andromeda
SAO
36300
Tycho2
2791-02276-1
last precise pa
247.1
last precise sep
6.016
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
00220+4213 HJ 1021 2001 8 246 6.1 9.68 10.10 A2 D 002157.78+421234.8
00220+4213 HJ 1021 2002 10 246 6.2 9.68 10.10 A2 D 002157.78+421234.8
00220+4213 HJ 1021 2015 12 247 6.0 9.68 10.10 A2 002157.78+421234.8

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