18492+1813 SMA 81 AB
18h 49m 12.54s +18° 12' 50.8" P.A. 338.00 sep 21.9 mag 11.23,11.65 Sp G0
| Coord 2000 |
18492+1813 |
|
Discov num |
SMA 81 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 49 12.54 +18 12 50.8 |
|
| Date first |
1895 |
|
Date last |
2022 |
|
Obs |
14 |
|
| Pa first |
339 |
|
Pa last |
338.3 |
|
P.A. Now (θ) |
338.3° |
|
| Sep first |
19.9 |
|
Sep last |
21.87 |
|
Sep. Now (ρ) |
21.87" |
|
| Mag pri |
11.23 |
|
Mag sec |
11.65 |
|
delta mag (ΔM) |
0.42 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
+009 |
|
Sec motion ra |
+003 |
|
| Pri motion dec |
-011 |
|
Sec motion dec |
+003 |
|
| Notes |
|
|
rPM=1.072
This double is not physical.
18492+1813 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
18 49 13 +18 12 51 |
SMA 81 AB |
2022 |
14 |
338 |
21.9 |
11.23 |
11.65 |
0.42 |
|
<=== |
| Show |
|
|
18 49 13 +18 12 51 |
DAM 353 AC |
2015 |
5 |
118 |
6.3 |
11.23 |
14.00 |
2.77 |
|
|
| Show |
|
|
18 49 13 +18 12 51 |
DAM 353 AD |
2022 |
9 |
259 |
9.6 |
11.23 |
13.00 |
1.77 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Hercules |
|
Tycho2 |
1588-01017-1 |
|
Gaia DR2 |
4512246191125304320 |
|
