18153-1900 BU  284BR

 
 
18h 15m 16.74s -18 59' 15.8" P.A. 326 sep 5.2 mag 11.50,12.00
 
 
Coord 2000
18153-1900
Discov num
BU  284
Comp
BR
Coord arcsec 2000
18 15 16.74 -18 59 15.8
Date first
1891
Date last
2000
Obs
7
Pa first
329
Pa last
326
P.A. Now (θ)
326°
Sep first
5.0
Sep last
5.2
Sep. Now (ρ)
5.2"
Mag pri
11.50
Mag sec
12.00
delta mag (ΔM)
0.5
Spectral class
Pri motion ra
+002
Sec motion ra
-068
Pri motion dec
-022
Sec motion dec
+070
Notes
rPM=1.185
This double is not physical.
 
 
18153-1900 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 161217 18153-1900 BU 284 AB 1890 2017 12 359 18.1 7.09 11.50 4.41
Show 161217 18153-1900 BU 284 AC 1891 2000 10 86 31.2 7.09 12.20 5.11
Show 161217 18153-1900 BU 284 AD 1890 2017 11 192 57.7 7.09 9.70 2.61
Show 161217 18153-1900 BU 284 AE 1890 2017 12 189 75.3 7.09 10.34 3.25
Show 161217 18153-1900 BU 284 AF 1890 2000 7 267 138.7 7.09 9.50 2.41
Show 161217 18153-1900 BU 284 AG 1891 2017 11 201 12.4 7.09 11.00 3.91
Show 161217 18153-1900 BU 284 AH 1891 2017 11 68 21.0 7.09 10.70 3.61
Show 161217 18153-1900 BU 284 AS 1898 2000 4 102 19.1 7.09 13.00 5.91
Show 161217 18153-1900 BU 284 BR 1891 2000 7 326 5.2 11.50 12.00 0.50 <===
Show 18153-1900 ARA 743 CQ 1916 2000 6 299 13.1 12.20 12.70 0.50
11-fold system
11 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
325.9
Precise sep
5.175
Constellation
Sagittarius
SAO
161217
Tycho2
6272-00830-1
HD
167287
last precise pa
325.9
last precise sep
5.175
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18153-1900 BU 284 BR 1999 4 326 5.1 11.00 12.00 D 181516.74-185915.8
18153-1900 BU 284 BR 2000 6 326 5.2 11.50 12.00 D 181516.74-185915.8

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