21072+3841 MLB1018

 
 
21h 07m 17.04s +38 41' 10.9" P.A. 250 sep 4.6 mag 12.30,13.70
 
 
Coord 2000
21072+3841
Discov num
MLB1018
Comp
Coord arcsec 2000
21 07 17.04 +38 41 10.9
Date first
1936
Date last
2016
Obs
9
Pa first
248
Pa last
250
P.A. Now (θ)
250°
Sep first
5.2
Sep last
4.6
Sep. Now (ρ)
4.6"
Mag pri
12.30
Mag sec
13.70
delta mag (ΔM)
1.4
Spectral class
Pri motion ra
-001
Sec motion ra
Pri motion dec
-009
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
249.8
Precise sep
4.64
Constellation
Cygnus
Tycho2
3168-01052-1
Gaia DR2
35534016512
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21072+3841 MLB1018 1937 2 248 5.1 11.22 12.20 210712.03+384147.3
21072+3841 MLB1018 2008 3 249 4.7 11.22 12.20 210712.03+384147.3
21072+3841 MLB1018 2013 4 251 4.6 11.22 12.20 210730.00+384100.0
21072+3841 MLB1018 2016 7 249 4.6 12.10 13.50 210717.04+384110.9

If you need more information about this double, apply for a data request form to the WDS.