21109+3830 ES  254

 
 
21h 10m 57.08s +38 30' 33.4" P.A. 325 sep 2.2 mag 10.46,10.59 Sp A1IV
 
 
Coord 2000
21109+3830
Discov num
ES  254
Comp
Coord arcsec 2000
21 10 57.08 +38 30 33.4
Date first
1905
Date last
2012
Obs
11
Pa first
330
Pa last
325
P.A. Now (θ)
325°
Sep first
2.4
Sep last
2.2
Sep. Now (ρ)
2.2"
Mag pri
10.46
Mag sec
10.59
delta mag (ΔM)
0.13
Spectral class
A1IV (white)
Pri motion ra
-001
Sec motion ra
-001
Pri motion dec
-002
Sec motion dec
-002
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
325
Precise sep
2.2
Cdsa2 id
ES 254
Constellation
Cygnus
Tycho2
3169-01864-1
Ra deg
21.182522222222225
De deg
38.509277777777775
last precise pa
325
last precise sep
2.2
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21109+3830 ES 254 1999 10 326 2.2 10.46 10.59 A1IV 211057.08+383033.4
21109+3830 ES 254 2012 11 325 2.2 10.46 10.59 A1IV 211057.08+383033.4

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