18180-1842 HWE  42

 
 
18h 18m 03.20s -18 45' 44.7" P.A. 192 sep 21.2 mag 8.73,11.55 Sp F6Iab/b
 
 
Coord 2000
18180-1842
Discov num
HWE  42
Comp
Coord arcsec 2000
18 18 03.20 -18 45 44.7
Date first
1879
Date last
2016
Obs
9
Pa first
195
Pa last
192
P.A. Now (θ)
192°
Sep first
20.2
Sep last
21.2
Sep. Now (ρ)
21.2"
Mag pri
8.73
Mag sec
11.55
delta mag (ΔM)
2.82
Spectral class
F6Iab/b (yellow-white)
Pri motion ra
-013
Sec motion ra
+001
Pri motion dec
+007
Sec motion dec
+001
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Sagittarius
SAO
161288
Tycho2
6273-00046-1
HD
167885
last precise pa
191.6
last precise sep
21.199
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18180-1842 HWE 42 1999 6 192 21.2 8.73 11.55 F6Iab/b D 181803.20-184544.7
18180-1842 HWE 42 2000 8 194 21.7 8.73 11.55 F6Iab/b D 181803.20-184544.7
18180-1842 HWE 42 2016 9 192 21.2 8.73 11.55 F6Iab/b 181803.20-184544.7

If you need more information about this double, apply for a data request form to the WDS.