20588+1701 BPM2305

20h 58m 49.34s +17 00' 44.5" P.A. 249 sep 72.7 mag 11.31,15.69

Coord 2000
20588+1701
Discov num
BPM2305
Comp
Coord arcsec 2000
20 58 49.34 +17 00 44.5
Date first
1991
Date last
2010
Obs
4
Pa first
249
Pa last
249
P.A. Now (θ)
249°
Sep first
74.0
Sep last
72.7
Sep. Now (ρ)
72.7"
Mag pri
11.31
Mag sec
15.69
delta mag (ΔM)
4.38
Spectral class
Pri motion ra
-015
Sec motion ra
-016
Pri motion dec
-013
Sec motion dec
+024
Notes
N V (See Notes, Proper motion indicates physical)


rPM=1.283

This double is physical.



OTHER CATALOGS AND DESIGNATIONS

Precise pa
249.3
Precise sep
72.72
Constellation
Delphinus
last precise pa
249.3
last precise sep
72.72




WDS HISTORIC DATA

coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20588+1701 BPM2305 2000 2 249 74.1 11.31 15.82 NV 205849.34+170044.5
20588+1701 BPM2305 2001 3 249 74.1 11.31 15.82 NV 205849.34+170044.5
20588+1701 BPM2305 2010 4 249 72.7 11.31 15.69 NV 205849.34+170044.5

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