18024-2302 SNA  77Aa,Ab

 
 
18h 02m 23.55s -23 01' 50.9" P.A. 248 mag 7.40,9.80 Sp O7.5V
 
 
Coord 2000
18024-2302
Discov num
SNA  77
Comp
Aa,Ab
Coord arcsec 2000
18 02 23.55 -23 01 50.9
Date first
2012
Date last
2013
Obs
2
Pa first
262
Pa last
248
P.A. Now (θ)
248°
Sep first
0.0
Sep last
0.0
Sep. Now (ρ)
0"
Mag pri
7.40
Mag sec
9.80
delta mag (ΔM)
2.4
Spectral class
O7.5V (blue)
Pri motion ra
-000
Sec motion ra
Pri motion dec
-009
Sec motion dec
Notes
N V K (See Notes, Proper motion indicates physical, K-band or other infrared magnitudes)
This double is physical.
 
 
18024-2302 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18024-2302 SNA 77 Aa,Ab 2012 2013 2 248 0.0 7.40 9.80 2.40 <===
Show V3791 Sgr 18024-2302 H N 40 AB 1830 2017 23 20 6.2 7.59 10.40 2.81
Show 18024-2302 H N 6 AC 1823 2017 33 213 10.7 7.59 8.66 1.07
Show 18024-2302 H N 6 AE 1956 2017 6 205 16.2 7.59 12.60 5.01
Show 18024-2302 HLD 175 AF 1875 2017 8 108 22.1 7.59 14.30 6.71
Show 18024-2302 H N 6 AG 1890 2017 5 212 40.7 7.59 13.40 5.81
Show 18024-2302 TRN 26 AH 2002 2013 2 344 1.5 7.59 13.00 5.41
Show 18024-2302 SNA 77 AI 2013 2013 1 43 3.1 7.31 11.54 4.23
Show 18024-2302 SNA 77 AJ 1998 2015 3 165 6.5 7.31 12.86 5.55
Show 18024-2302 H N 6 CD 1866 1934 13 280 2.3 8.66 10.70 2.04
Show 18024-2302 H N 6 CE 1875 2015 6 191 6.0 8.66 12.60 3.94
Show 18024-2302 H N 6 CF 1875 2015 5 85 26.8 8.66 14.30 5.64
Show 18024-2302 H N 6 CG 1878 2017 5 212 30.0 8.66 13.40 4.74
11-fold system
10 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Spectr
G8III
SAO
230804
Tycho2
7989-00346-1
HD
206371
Dm number
-4314667
last precise pa
248.3
last precise sep
0.034
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18024-2302 SNA 77 Aa,Ab 2013 2 248 0.0 7.40 9.80 O7.5V NV K 180223.55-230150.9

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