20186+1905 J   835

 
 
20h 18m 30.61s +19 01' 51.7" P.A. 45 sep 3.4 mag 12.05,13.46 dist. 78.19 pc (255.06 l.y.)
 
 
Coord 2000
20186+1905
Discov num
J   835
Comp
Coord arcsec 2000
20 18 30.61 +19 01 51.7
Date first
1895
Date last
2015
Obs
8
Pa first
46
Pa last
45
P.A. Now (θ)
45°
Sep first
3.2
Sep last
3.4
Sep. Now (ρ)
3.4"
Mag pri
12.05
Mag sec
13.46
delta mag (ΔM)
1.41
Spectral class
Pri motion ra
-010
Sec motion ra
-030
Pri motion dec
+007
Sec motion dec
-004
Notes
B (Blue magnitudes)
rPM=0.754
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
45.2
Precise sep
3.383
Spectr
F2
Constellation
Sagitta
HIP
100111
Tycho2
1639-00673-1
Gaia DR2
28194936704
HD
351880
Distance
78.19
Distance ly
255.06
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20186+1905 J 835 1957 6 46 2.9 12.05 13.46 B 201830.61+190151.7
20186+1905 J 835 2001 7 46 3.4 12.05 13.46 B 201830.61+190151.7
20186+1905 J 835 2015 8 45 3.4 12.05 13.46 B 201830.61+190151.7

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