18156+3842 ALI 871

 
 
18h 15m 37.62s +38 42' 19.4" P.A. 182 sep 12.9 mag 10.92,11.97
 
 
Coord 2000
18156+3842
Discov num
ALI 871
Comp
Coord arcsec 2000
18 15 37.62 +38 42 19.4
Date first
1930
Date last
2017
Obs
8
Pa first
178
Pa last
182
P.A. Now (θ)
182°
Sep first
14.4
Sep last
12.9
Sep. Now (ρ)
12.9"
Mag pri
10.92
Mag sec
11.97
delta mag (ΔM)
1.05
Spectral class
Pri motion ra
+016
Sec motion ra
+003
Pri motion dec
+004
Sec motion dec
+015
Notes
rPM=1.033
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
181.9
Precise sep
12.946
Constellation
Lyra
Tycho2
3103-01781-1
last precise pa
181.9
last precise sep
12.946
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18156+3842 ALI 871 2006 5 181 13.1 10.92 11.97 D 181537.62+384219.4
18156+3842 ALI 871 2010 7 181 12.8 10.92 11.97 181537.62+384219.4
18156+3842 ALI 871 2017 8 182 12.9 10.92 11.97 181537.62+384219.4

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