18028-2705 HLD  32AB

 
 
18h 02m 45.04s -27 04' 42.4" P.A. 101 sep 5.3 mag 8.44,9.40 Sp F7V
 
 
Coord 2000
18028-2705
Discov num
HLD  32
Comp
AB
Coord arcsec 2000
18 02 45.04 -27 04 42.4
Date first
1881
Date last
2015
Obs
17
Pa first
102
Pa last
101
P.A. Now (θ)
101°
Sep first
4.5
Sep last
5.3
Sep. Now (ρ)
5.3"
Mag pri
8.44
Mag sec
9.40
delta mag (ΔM)
0.96
Spectral class
F7V (yellow-white)
Pri motion ra
-033
Sec motion ra
Pri motion dec
+005
Sec motion dec
Notes
V (Proper motion indicates physical)
This double is physical.
 
 
18028-2705 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18028-2705 HLD 32 AB 1881 2015 17 101 5.3 8.44 9.40 0.96 <===
Show 18028-2705 FOX 218 AC 1909 1998 3 67 41.9 8.44 11.50 3.06
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
100.6
Precise sep
5.265
Constellation
Sagittarius
Tycho2
6850-00972-1
Gaia DR2
18272738816
HD
164538
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18028-2705 HLD 32 AB 2001 16 100 5.2 8.40 9.40 F7V DV 180245.05-270442.5
18028-2705 HLD 32 AB 2015 17 101 5.3 8.44 9.40 F7V V 180245.04-270442.4

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