18578+0409 HJ  873

 
 
18h 57m 47.51s +04 09' 15.2" P.A. 73 sep 21.7 mag 9.70,11.72 Sp F0
 
 
Coord 2000
18578+0409
Discov num
HJ  873
Comp
Coord arcsec 2000
18 57 47.51 +04 09 15.2
Date first
1827
Date last
2015
Obs
10
Pa first
75
Pa last
73
P.A. Now (θ)
73°
Sep first
15.0
Sep last
21.7
Sep. Now (ρ)
21.7"
Mag pri
9.70
Mag sec
11.72
delta mag (ΔM)
2.02
Spectral class
F0 (yellow-white)
Pri motion ra
+000
Sec motion ra
+001
Pri motion dec
+005
Sec motion dec
+007
Notes
rPM=0.316
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
72.8
Precise sep
21.65
Constellation
Serpens
last precise pa
72.8
last precise sep
21.65
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18578+0409 HJ 873 2002 6 73 21.4 9.40 11.20 F0 D 185747.51+040915.2
18578+0409 HJ 873 2015 9 73 21.7 9.70 11.72 F0 185747.51+040915.2

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