15498+4431 BU  621

 
 
15h 49m 49.96s +44 31' 19.5" P.A. 26 sep 0.7 mag 7.94,9.37 Sp A2V dist. 411.52 pc (1342.38 l.y.)
 
 
Coord 2000
15498+4431
Discov num
BU  621
Comp
Coord arcsec 2000
15 49 49.96 +44 31 19.5
Date first
1878
Date last
2014
Obs
65
Pa first
75
Pa last
26
P.A. Now (θ)
26°
Sep first
0.5
Sep last
0.7
Sep. Now (ρ)
0.7"
Mag pri
7.94
Mag sec
9.37
delta mag (ΔM)
1.43
Spectral class
A2V (white)
Pri motion ra
-012
Sec motion ra
-012
Pri motion dec
+003
Sec motion dec
+003
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
25.9
Precise sep
0.69
Constellation
Hercules
SAO
45752
HIP
77529
Tycho2
3060-01220-1
HD
141930
BD
BD+44 2511
Distance
411.52
Distance ly
1342.38
last precise pa
25.9
last precise sep
0.69
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15498+4431 BU 621 1998 57 28 0.8 7.94 9.37 A2V D 154949.96+443119.5
15498+4431 BU 621 2010 60 28 0.7 7.94 9.37 A2V D 154949.96+443119.5
15498+4431 BU 621 2014 65 26 0.7 7.94 9.37 A2V 154949.96+443119.5

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