01550+4012 ALI1021

 
 
01h 54m 58.52s +40 11' 57.0" P.A. 297 sep 3.7 mag 12.50,12.80
 
 
Coord 2000
01550+4012
Discov num
ALI1021
Comp
Coord arcsec 2000
01 54 58.52 +40 11 57.0
Date first
1928
Date last
2011
Obs
4
Pa first
316
Pa last
297
P.A. Now (θ)
297°
Sep first
8.9
Sep last
3.7
Sep. Now (ρ)
3.7"
Mag pri
12.50
Mag sec
12.80
delta mag (ΔM)
0.3
Spectral class
Pri motion ra
-007
Sec motion ra
+014
Pri motion dec
-006
Sec motion dec
-058
Notes
U (Proper motion indicates non-physical)
rPM=0.94
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
296.9
Precise sep
3.65
Constellation
Andromeda
Tycho2
2820-00898-1
last precise pa
296.9
last precise sep
3.65
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
01550+4012 ALI1021 1928 1 316 8.9 12.50 12.80 015458.52+401157.0
01550+4012 ALI1021 2003 3 300 4.5 12.50 12.80 U 015458.52+401157.0
01550+4012 ALI1021 2011 5 297 3.7 12.50 12.80 U 015458.52+401157.0

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