20298+1712 J   510

 
 
20h 29m 45.69s +17 11' 55.7" P.A. 248 sep 4.9 mag 9.80,13.10 Sp A2
 
 
Coord 2000
20298+1712
Discov num
J   510
Comp
Coord arcsec 2000
20 29 45.69 +17 11 55.7
Date first
1911
Date last
2015
Obs
5
Pa first
239
Pa last
248
P.A. Now (θ)
248°
Sep first
3.3
Sep last
4.9
Sep. Now (ρ)
4.9"
Mag pri
9.80
Mag sec
13.10
delta mag (ΔM)
3.3
Spectral class
A2 (white)
Pri motion ra
+011
Sec motion ra
Pri motion dec
-004
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
248.1
Precise sep
4.876
Constellation
Delphinus
SAO
106162
Tycho2
1636-01976-1
Gaia DR2
27864976640
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20298+1712 J 510 1911 2 242 3.5 9.91 13.70 A2 202945.69+171155.7
20298+1712 J 510 2000 3 248 4.8 9.80 13.10 A2 202945.69+171155.7
20298+1712 J 510 2015 4 248 4.9 9.80 13.10 A2 202945.69+171155.7

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