01398-2031 DON  21

 
 
01h 39m 50.42s -20 31' 03.4" P.A. 357 sep 2.7 mag 9.60,14.00 Sp F5 dist. 243.9 pc (795.6 l.y.)
 
 
Coord 2000
01398-2031
Discov num
DON  21
Comp
Coord arcsec 2000
01 39 50.42 -20 31 03.4
Date first
1929
Date last
1986
Obs
4
Pa first
346
Pa last
357
P.A. Now (θ)
357°
Sep first
2.0
Sep last
2.7
Sep. Now (ρ)
2.7"
Mag pri
9.60
Mag sec
14.00
delta mag (ΔM)
4.4
Spectral class
F5 (yellow-white)
Pri motion ra
+055
Sec motion ra
Pri motion dec
+000
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
357
Precise sep
2.71
Constellation
Cetus
SAO
167206
HIP
7754
Tycho2
5857-00109-1
HD
10246
BD
BD-21 274
Distance
243.9
Distance ly
795.6
last precise pa
357
last precise sep
2.71
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
01398-2031 DON 21 1986 4 357 2.7 9.60 14.00 F5 013950.42-203103.4

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