12171+0143 A  2487

 
 
12h 17m 07.63s +01 42' 45.1" P.A. 176 sep 1.9 mag 8.94,12.46 Sp A2
 
 
Coord 2000
12171+0143
Discov num
A  2487
Comp
Coord arcsec 2000
12 17 07.63 +01 42 45.1
Date first
1912
Date last
2015
Obs
10
Pa first
176
Pa last
176
P.A. Now (θ)
176°
Sep first
1.8
Sep last
1.9
Sep. Now (ρ)
1.9"
Mag pri
8.94
Mag sec
12.46
delta mag (ΔM)
3.52
Spectral class
A2 (white)
Pri motion ra
-007
Sec motion ra
-005
Pri motion dec
+009
Sec motion dec
+009
Notes
rPM=0.011 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Spectr
M2+M5
last precise pa
176.3
last precise sep
1.89
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12171+0143 A 2487 1991 9 176 1.9 8.94 12.46 A2 121707.63+014245.1
12171+0143 A 2487 2015 10 176 1.9 8.94 12.46 A2 121707.63+014245.1

If you need more information about this double, apply for a data request form to the WDS.