17471+6455 LDS2741

 
 
17h 46m 56.25s +64 56' 07.9" P.A. 144 sep 23.1 mag 15.31,15.74 Sp M1+M1
 
 
Coord 2000
17471+6455
Discov num
LDS2741
Comp
Coord arcsec 2000
17 46 56.25 +64 56 07.9
Date first
1968
Date last
2015
Obs
6
Pa first
145
Pa last
144
P.A. Now (θ)
144°
Sep first
23.0
Sep last
23.1
Sep. Now (ρ)
23.1"
Mag pri
15.31
Mag sec
15.74
delta mag (ΔM)
0.43
Spectral class
M1+M1 (red/red)
Pri motion ra
-082
Sec motion ra
-077
Pri motion dec
+097
Sec motion dec
+107
Notes
V (Proper motion indicates physical)
rPM=0.085 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
144.4
Precise sep
23.092
Cdsa2 id
LDS 2741
Constellation
Draco
Ra deg
17.782291666666666
De deg
64.93552777777778
last precise pa
144.4
last precise sep
23.092
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17471+6455 LDS2741 1999 2 144 23.1 15.80 16.20 D 174656.25+645607.9
17471+6455 LDS2741 2004 3 144 22.9 15.80 16.20 D 174656.25+645607.9
17471+6455 LDS2741 2006 4 144 23.1 15.31 15.74 M1+M1 V 174656.25+645607.9
17471+6455 LDS2741 2010 5 144 23.1 15.31 15.74 M1+M1 V 174656.25+645607.9
17471+6455 LDS2741 2015 6 144 23.1 15.31 15.74 M1+M1 V 174656.25+645607.9

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