16408-7218 HDO 255

 
 
16h 40m 47.44s -72 17' 58.6" P.A. 253 sep 2.4 mag 6.67,10.60 Sp G8III dist. 124.53 pc (406.22 l.y.)
 
 
Coord 2000
16408-7218
Discov num
HDO 255
Comp
Coord arcsec 2000
16 40 47.44 -72 17 58.6
Date first
1897
Date last
1991
Obs
5
Pa first
235
Pa last
253
P.A. Now (θ)
253°
Sep first
2.8
Sep last
2.4
Sep. Now (ρ)
2.4"
Mag pri
6.67
Mag sec
10.60
delta mag (ΔM)
3.93
Spectral class
G8III (yellow)
Pri motion ra
+020
Sec motion ra
+018
Pri motion dec
+030
Sec motion dec
+028
Notes
rPM=0.078 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
252.7
Precise sep
2.37
Constellation
Apus
SAO
257421
HIP
81653
Tycho2
9282-02463-1
Gaia DR2
36959859072
HD
149392
CP
CP-72 1971
Distance
124.53
Distance ly
406.22
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16408-7218 HDO 255 1991 5 253 2.4 6.67 10.60 G8III D 164047.44-721758.6

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