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
11
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
Tycho2
0457-00503-1
Gaia DR2
4281143140601463296
HD
175963
 
 
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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