20045+1638 BPM1972AB

 
 
20h 04m 27.13s +16 38' 10.9" P.A. 206.00 sep 37.6 mag 15.08,15.74
 
 
Coord 2000
20045+1638
Discov num
BPM1972
Comp
AB
Coord arcsec 2000
20 04 27.13 +16 38 10.9
Date first
1994
Date last
2015
Obs
8
Pa first
206
Pa last
206
P.A. Now (θ)
206°
Sep first
37.6
Sep last
37.6
Sep. Now (ρ)
37.6"
Mag pri
15.08
Mag sec
15.74
delta mag (ΔM)
0.66
Spectral class
Pri motion ra
-013
Sec motion ra
-009
Pri motion dec
-003
Sec motion dec
-013
Notes
N U (See Notes, Proper motion indicates non-physical)
rPM=0.681
This double is not physical.
 
 
20045+1638 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 105639 20045+1638 BPM1972 AB 1994 2015 8 206 37.6 15.08 15.74 0.66 <===
Show 105639 20045+1638 BPM1973 AC 1991 2015 8 330 98.3 15.08 15.39 0.31
Show 105639 20045+1638 BPM1974 AD 1994 2015 8 297 102.2 15.08 15.45 0.37
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
206.1
Precise sep
37.601
Constellation
Sagitta
SAO
105639
Gaia DR2
1808171031090574976
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20045+1638 BPM1972 AB 2000 2 206 37.4 15.08 15.74 NV 200427.13+163810.9
20045+1638 BPM1972 AB 2001 3 206 37.3 15.08 15.74 NV 200427.13+163810.9
20045+1638 BPM1972 AB 2015 4 207 37.7 15.08 15.74 NU 200427.13+163810.9

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