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
Cdsa2 id
STT 523
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
Ra deg
10.287369444444444
De deg
23.106194444444444
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.