18138-2104 H 5 7 AB (Polis)
18h 13m 45.81s -21° 03' 31.8" P.A. 258.00 sep 16.9 mag 3.85,10.48 Sp B8Iape dist. 11111.11 pc (36244.44 l.y.)
| Coord 2000 |
18138-2104 |
|
Discov num |
H 5 7 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 13 45.81 -21 03 31.8 |
|
| Date first |
1830 |
|
Date last |
2013 |
|
Obs |
20 |
|
| Pa first |
263 |
|
Pa last |
257.8 |
|
P.A. Now (θ) |
257.8° |
|
| Sep first |
12.0 |
|
Sep last |
16.87 |
|
Sep. Now (ρ) |
16.87" |
|
| Mag pri |
3.85 |
|
Mag sec |
10.48 |
|
delta mag (ΔM) |
6.63 |
|
Spectral class |
B8Iape (blue-white) |
|
| Pri motion ra |
+000 |
|
Sec motion ra |
|
|
| Pri motion dec |
-001 |
|
Sec motion dec |
|
|
| Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
18138-2104 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
Polis |
186497 |
18 13 46 -21 03 32 |
H 5 7 AB |
2013 |
20 |
258 |
16.9 |
3.85 |
10.48 |
6.63 |
|
<=== |
| Show |
|
186497 |
18 13 46 -21 03 32 |
BU 292 AC |
2008 |
10 |
119 |
25.5 |
3.85 |
12.80 |
8.95 |
|
|
| Show |
|
186497 |
18 13 46 -21 03 32 |
HJ 2822 AD |
2013 |
25 |
312 |
48.2 |
3.85 |
9.96 |
6.11 |
|
|
| Show |
|
186497 |
18 13 46 -21 03 32 |
HJ 2822 AE |
2013 |
20 |
114 |
50.2 |
3.85 |
9.22 |
5.37 |
|
|
| Show |
|
|
18 13 45 -21 03 35 |
SLV 7 BD |
2020 |
13 |
331 |
40.8 |
10.48 |
9.96 |
0.52 |
|
|
| Show |
|
|
18 13 45 -21 03 35 |
SLV 7 BE |
2020 |
12 |
106 |
64.4 |
10.48 |
9.22 |
1.26 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Common name |
Polis |
|
Constellation |
Sagittarius |
|
SAO |
186497 |
|
HIP |
89341 |
|
| Tycho2 |
6276-03093-1 |
|
Gaia DR2 |
4093933487667449984 |
|
HD |
166937 |
|
HR |
6812 |
|
| GC |
24856 |
|
ADS |
11169 |
|
BD |
BD-21 4908 |
|
Bayer |
Mu Sagittarii |
|
| Bayer name |
Mu Sgr |
|
Flamsteed |
13 Sagittarii |
|
Flamsteed name |
13 Sgr |
|
FK5 |
682 |
|
| Distance |
11111.11 |
|
Distance ly |
36244.44 |
|
Bayer greek |
μ Sgr |
|
