16426+3113 SEI 540

 
 
16h 42m 35.18s +31 12' 58.3" P.A. 227 sep 11.5 mag 9.55,11.10 Sp F0 dist. 172.12 pc (561.46 l.y.)
 
 
Coord 2000
16426+3113
Discov num
SEI 540
Comp
Coord arcsec 2000
16 42 35.18 +31 12 58.3
Date first
1895
Date last
2013
Obs
16
Pa first
229
Pa last
227
P.A. Now (θ)
227°
Sep first
12.2
Sep last
11.5
Sep. Now (ρ)
11.5"
Mag pri
9.55
Mag sec
11.10
delta mag (ΔM)
1.55
Spectral class
F0 (yellow-white)
Pri motion ra
-025
Sec motion ra
-025
Pri motion dec
+034
Sec motion dec
+032
Notes
rPM=0.047 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
226.6
Precise sep
11.52
Constellation
Hercules
SAO
65498
HIP
81811
Tycho2
2582-02757-1
BD
BD+31 2891
Distance
172.12
Distance ly
561.46
last precise pa
226.6
last precise sep
11.52
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16426+3113 SEI 540 2001 11 227 11.6 9.55 11.10 F0 D 164235.18+311258.3
16426+3113 SEI 540 2002 12 227 11.5 9.55 11.10 F0 D 164235.18+311258.3
16426+3113 SEI 540 2013 13 227 11.5 9.55 11.10 F0 164235.18+311258.3

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