10172+2306 STT 523 (39 Leo)

 
 
10h 17m 14.53s +23 06' 22.3" P.A. 300 sep 7.9 mag 5.80,11.30 Sp F6V+M1.5 dist. 22.81 pc (74.41 l.y.)
 
 
Coord 2000
10172+2306
Discov num
STT 523
Comp
Coord arcsec 2000
10 17 14.53 +23 06 22.3
Date first
1851
Date last
2017
Obs
34
Pa first
294
Pa last
300
P.A. Now (θ)
300°
Sep first
6.8
Sep last
7.9
Sep. Now (ρ)
7.9"
Mag pri
5.80
Mag sec
11.30
delta mag (ΔM)
5.5
Spectral class
F6V+M1.5 (yellow-white/red)
Pri motion ra
-413
Sec motion ra
-398
Pri motion dec
-096
Sec motion dec
-118
Notes
N V (See Notes, Proper motion indicates physical)
rPM=0.063 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
300.2
Precise sep
7.91
Name
39 Leo
Constellation
Leo
SAO
81270
HIP
50384
Tycho2
1969-01262-1
HD
89125
HR
4039
GC
14124
GL
Gl 387A
BD
BD+23 2207
Flamsteed
39 Leonis
Flamsteed name
39 Leo
Distance
22.81
Distance ly
74.41
last precise pa
300.2
last precise sep
7.91
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
10172+2306 STT 523 2005 30 299 7.7 5.80 11.40 F7V N D 101714.80+230623.2
10172+2306 STT 523 2015 32 307 6.7 5.80 11.30 F6V+M1.5 NV 101714.80+230623.2
10172+2306 STT 523 2017 34 300 7.9 5.80 11.30 F6V+M1.5 NV 101714.53+230622.3

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