20137+4050 DOO  13

 
 
20h 13m 44.60s +40 50' 19.2" P.A. 258 sep 3 mag 9.94,10.39 Sp B2I: dist. 4166.67 pc (13591.68 l.y.)
 
 
Coord 2000
20137+4050
Discov num
DOO  13
Comp
Coord arcsec 2000
20 13 44.60 +40 50 19.2
Date first
1900
Date last
2018
Obs
24
Pa first
258
Pa last
258
P.A. Now (θ)
258°
Sep first
2.8
Sep last
3.0
Sep. Now (ρ)
3"
Mag pri
9.94
Mag sec
10.39
delta mag (ΔM)
0.45
Spectral class
B2I: (blue-white)
Pri motion ra
-002
Sec motion ra
-003
Pri motion dec
-006
Sec motion dec
-006
Notes
N (See Notes)
rPM=0.149 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
258.2
Precise sep
3.021
Constellation
Cygnus
HIP
99688
Tycho2
3155-01471-1
Gaia DR2
44472384512
HD
228446
BD
BD+40 4068
Distance
4166.67
Distance ly
13591.68
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20137+4050 DOO 13 2001 20 258 3.0 9.94 10.39 D 201344.60+405019.2
20137+4050 DOO 13 2009 21 258 2.9 9.94 10.39 D 201344.60+405019.2
20137+4050 DOO 13 2015 23 258 2.9 9.94 10.39 B2I: N 201344.60+405019.2

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