18147-1847 TOB 272BC

 
 
18h 14m 43.57s -18 46' 34.3" P.A. 324 sep 18.4 mag 10.12,11.10
 
 
Coord 2000
18147-1847
Discov num
TOB 272
Comp
BC
Coord arcsec 2000
18 14 43.57 -18 46 34.3
Date first
1917
Date last
2015
Obs
7
Pa first
325
Pa last
324
P.A. Now (θ)
324°
Sep first
18.3
Sep last
18.4
Sep. Now (ρ)
18.4"
Mag pri
10.12
Mag sec
11.10
delta mag (ΔM)
0.98
Spectral class
Pri motion ra
-004
Sec motion ra
+000
Pri motion dec
-006
Sec motion dec
+001
Notes
rPM=1.118
This double is not physical.
 
 
18147-1847 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18147-1847 TOB 272 AB 1916 2015 8 330 28.8 8.28 10.12 1.84
Show 18147-1847 TOB 272 BC 1917 2015 7 324 18.4 10.12 11.10 0.98 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
324.1
Precise sep
18.368
Constellation
Sagittarius
Tycho2
6272-00764-1
Gaia DR2
67079907584
HD
167144
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18147-1847 TOB 272 BC 1987 3 325 18.6 10.00 11.10 181443.57-184634.3
18147-1847 TOB 272 BC 1999 4 324 18.3 10.00 11.10 181443.57-184634.3
18147-1847 TOB 272 BC 2011 5 324 18.2 10.00 11.10 181443.57-184634.3
18147-1847 TOB 272 BC 2015 7 324 18.4 10.12 11.10 181443.57-184634.3

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