18042-2230 S 698 AB (HD 164863)
18h 04m 12.64s -22° 30' 03.2" P.A. 316.00 sep 29.7 mag 7.22,8.52 Sp O
| Coord 2000 |
18042-2230 |
|
Discov num |
S 698 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 04 12.64 -22 30 03.2 |
|
| Date first |
1825 |
|
Date last |
2015 |
|
Obs |
19 |
|
| Pa first |
317 |
|
Pa last |
315.6 |
|
P.A. Now (θ) |
315.6° |
|
| Sep first |
30.9 |
|
Sep last |
29.745 |
|
Sep. Now (ρ) |
29.745" |
|
| Mag pri |
7.22 |
|
Mag sec |
8.52 |
|
delta mag (ΔM) |
1.3 |
|
Spectral class |
O (blue) |
|
| Pri motion ra |
+000 |
|
Sec motion ra |
-001 |
|
| Pri motion dec |
-004 |
|
Sec motion dec |
-001 |
|
| Notes |
|
|
rPM=0.791
Nature of this double is uncertain.
18042-2230 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 164863 |
|
18 04 13 -22 30 03 |
S 698 AB |
2015 |
19 |
316 |
29.7 |
7.22 |
8.52 |
1.30 |
|
<=== |
| Show |
|
|
18 04 13 -22 30 03 |
WFC 289 AD |
2015 |
5 |
13 |
39.2 |
7.22 |
10.74 |
3.52 |
|
|
| Show |
|
|
18 04 11 -22 29 42 |
B 1875 BC |
2002 |
3 |
236 |
0.5 |
8.52 |
13.20 |
4.68 |
|
|
| Show |
|
|
18 04 13 -22 29 25 |
ARA 1842 DE |
2020 |
8 |
110 |
12.6 |
10.60 |
12.90 |
2.30 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 164863 |
|
Constellation |
Sagittarius |
|
Tycho2 |
6842-00246-1 |
|
Gaia DR2 |
4069668567378351616 |
|
| HD |
164863 |
|
