18581+3308 HLM  12

 
 
18h 57m 57.32s +33 08' 05.6" P.A. 357 sep 13.9 mag 11.66,12.70
 
 
Coord 2000
18581+3308
Discov num
HLM  12
Comp
Coord arcsec 2000
18 57 57.32 +33 08 05.6
Date first
1918
Date last
2015
Obs
9
Pa first
359
Pa last
357
P.A. Now (θ)
357°
Sep first
13.9
Sep last
13.9
Sep. Now (ρ)
13.9"
Mag pri
11.66
Mag sec
12.70
delta mag (ΔM)
1.04
Spectral class
Pri motion ra
-001
Sec motion ra
-006
Pri motion dec
-002
Sec motion dec
-008
Notes
rPM=0.781
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
356.8
Precise sep
13.923
Constellation
Lyra
Tycho2
2643-00806-1
Gaia DR2
2043917834585065088
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18581+3308 HLM 12 2004 6 357 14.0 11.66 12.70 D 185757.32+330805.6
18581+3308 HLM 12 2010 8 357 13.7 11.66 12.70 185757.32+330805.6
18581+3308 HLM 12 2015 9 357 13.9 11.66 12.70 185757.32+330805.6

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