18020-2731 STN  40AB

 
 
18h 02m 02.85s -27 30' 53.4" P.A. 161 sep 2.4 mag 8.49,9.31 Sp B2V
 
 
Coord 2000
18020-2731
Discov num
STN  40
Comp
AB
Coord arcsec 2000
18 02 02.85 -27 30 53.4
Date first
1876
Date last
1999
Obs
19
Pa first
163
Pa last
161
P.A. Now (θ)
161°
Sep first
3.0
Sep last
2.4
Sep. Now (ρ)
2.4"
Mag pri
8.49
Mag sec
9.31
delta mag (ΔM)
0.82
Spectral class
B2V (blue-white)
Pri motion ra
-011
Sec motion ra
+000
Pri motion dec
+026
Sec motion dec
+000
Notes
rPM=1
This double is not physical.
 
 
18020-2731 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18020-2731 STN 40 AB 1876 1999 19 161 2.4 8.49 9.31 0.82 <===
Show 18020-2731 B 2850 AC 1927 1999 3 50 5.8 8.49 14.10 5.61
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
160.8
Precise sep
2.41
Constellation
Sagittarius
Tycho2
6850-02107-1
HD
164404
last precise pa
160.8
last precise sep
2.41
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18020-2731 STN 40 AB 1999 18 161 2.4 8.49 9.31 B2V D 180202.85-273053.4

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