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
Constellation
Draco
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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