19218+7708 HDS2740

 
 
19h 21m 45.04s +77 07' 41.6" P.A. 21.00 sep 0.3 mag 9.78,13.01 Sp K0 dist. 56.75 pc (185.12 l.y.)
 
 
Coord 2000
19218+7708
Discov num
HDS2740
Comp
Coord arcsec 2000
19 21 45.04 +77 07 41.6
Date first
1991
Date last
2011
Obs
8
Pa first
349
Pa last
21
P.A. Now (θ)
21°
Sep first
0.5
Sep last
0.3
Sep. Now (ρ)
0.3"
Mag pri
9.78
Mag sec
13.01
delta mag (ΔM)
3.23
Spectral class
K0 (yellow-orange)
Pri motion ra
+137
Sec motion ra
Pri motion dec
+385
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
21.1
Precise sep
0.274
Constellation
Draco
SAO
9407
HIP
95178
Tycho2
4588-01023-1
HD
183678
BD
BD+76 735
Distance
56.75
Distance ly
185.12
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19218+7708 HDS2740 1999 2 356 0.4 9.78 13.01 K0 D 192144.70+770738.2
19218+7708 HDS2740 2004 3 2 0.3 9.78 13.01 K0 D 192144.70+770738.2
19218+7708 HDS2740 2007 5 10 0.3 9.78 13.01 K0 D 192144.70+770738.2
19218+7708 HDS2740 2008 6 14 0.2 9.78 13.01 K0 D 192144.70+770738.2

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