18575+2741 A   259

 
 
18h 57m 31.25s +27 40' 53.4" P.A. 62 sep 2.7 mag 9.83,12.64 Sp M2
 
 
Coord 2000
18575+2741
Discov num
A   259
Comp
Coord arcsec 2000
18 57 31.25 +27 40 53.4
Date first
1901
Date last
2009
Obs
10
Pa first
74
Pa last
62
P.A. Now (θ)
62°
Sep first
2.1
Sep last
2.7
Sep. Now (ρ)
2.7"
Mag pri
9.83
Mag sec
12.64
delta mag (ΔM)
2.81
Spectral class
M2 (red)
Pri motion ra
-003
Sec motion ra
-003
Pri motion dec
-005
Sec motion dec
-005
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
61.6
Precise sep
2.734
Constellation
Lyra
Tycho2
2117-01215-1
HD
337170
last precise pa
61.6
last precise sep
2.734
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18575+2741 A 259 1991 9 69 2.6 9.83 12.64 M2 185731.25+274053.4
18575+2741 A 259 2009 10 62 2.7 9.83 12.64 M2 185731.25+274053.4

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