18284+4444 HDS2616

 
 
18h 28m 25.85s +44 44' 22.2" P.A. 62 sep 0.1 mag 9.24,10.33 Sp F0 dist. 193.42 pc (630.94 l.y.)
 
 
Coord 2000
18284+4444
Discov num
HDS2616
Comp
Coord arcsec 2000
18 28 25.85 +44 44 22.2
Date first
1991
Date last
2006
Obs
2
Pa first
78
Pa last
62
P.A. Now (θ)
62°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
9.24
Mag sec
10.33
delta mag (ΔM)
1.09
Spectral class
F0 (yellow-white)
Pri motion ra
-013
Sec motion ra
Pri motion dec
+011
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
61.5
Precise sep
0.117
Constellation
Lyra
SAO
47522
HIP
90540
Tycho2
3116-00254-1
HD
170646
BD
BD+44 2908
Distance
193.42
Distance ly
630.94
last precise pa
61.5
last precise sep
0.117
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18284+4444 HDS2616 1991 1 78 0.1 9.24 10.33 F0 182825.85+444422.2
18284+4444 HDS2616 2006 2 62 0.1 9.24 10.33 F0 182825.85+444422.2

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