20418+1231 STF2715

 
 
20h 41m 46.01s +12 31' 07.1" P.A. 3 sep 12.3 mag 7.80,10.22 Sp F8 dist. 92.42 pc (301.47 l.y.)
 
 
Coord 2000
20418+1231
Discov num
STF2715
Comp
Coord arcsec 2000
20 41 46.01 +12 31 07.1
Date first
1830
Date last
2013
Obs
25
Pa first
2
Pa last
3
P.A. Now (θ)
Sep first
12.0
Sep last
12.3
Sep. Now (ρ)
12.3"
Mag pri
7.80
Mag sec
10.22
delta mag (ΔM)
2.42
Spectral class
F8 (yellow-white)
Pri motion ra
+050
Sec motion ra
+046
Pri motion dec
-033
Sec motion dec
-027
Notes
rPM=0.12 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
2.8
Precise sep
12.3
Constellation
Delphinus
SAO
106390
HIP
102131
Tycho2
1097-02967-1
HD
197179
BD
BD+12 4431
Distance
92.42
Distance ly
301.47
last precise pa
2.8
last precise sep
12.3
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20418+1231 STF2715 2007 19 2 12.3 7.80 10.22 F8 D 204146.01+123107.1
20418+1231 STF2715 2009 20 3 12.3 7.80 10.22 F8 D 204146.01+123107.1
20418+1231 STF2715 2013 24 3 12.3 7.80 10.22 F8 204146.01+123107.1

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