18546+3020 HDS2681

 
 
18h 54m 38.15s +30 19' 45.7" P.A. 282 sep 4.4 mag 9.16,13.30 Sp A2 dist. 263.85 pc (860.68 l.y.)
 
 
Coord 2000
18546+3020
Discov num
HDS2681
Comp
Coord arcsec 2000
18 54 38.15 +30 19 45.7
Date first
1991
Date last
1991
Obs
2
Pa first
282
Pa last
282
P.A. Now (θ)
282°
Sep first
4.3
Sep last
4.4
Sep. Now (ρ)
4.4"
Mag pri
9.16
Mag sec
13.30
delta mag (ΔM)
4.14
Spectral class
A2 (white)
Pri motion ra
-005
Sec motion ra
-007
Pri motion dec
+000
Sec motion dec
-003
Notes
rPM=0.473
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
281.8
Precise sep
4.36
Constellation
Lyra
SAO
67557
HIP
92809
Tycho2
2639-01577-1
BD
BD+30 3342
Distance
263.85
Distance ly
860.68
last precise pa
281.8
last precise sep
4.36
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18546+3020 HDS2681 1991 2 282 4.4 9.16 13.30 A2 185438.15+301945.7

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