18428+5938 STF 2398 AC
18h 42m 46.69s +59° 37' 49.4" P.A. 158.00 sep 216.8 mag 9.11,12.24 Sp M3V dist. 3.57 pc (11.65 l.y.)
| Coord 2000 |
18428+5938 |
|
Discov num |
STF2398 |
|
Comp |
AC |
|
Coord arcsec 2000 |
18 42 46.69 +59 37 49.4 |
|
| Date first |
1904 |
|
Date last |
2013 |
|
Obs |
21 |
|
| Pa first |
243 |
|
Pa last |
157.9 |
|
P.A. Now (θ) |
157.9° |
|
| Sep first |
50.9 |
|
Sep last |
216.821 |
|
Sep. Now (ρ) |
216.821" |
|
| Mag pri |
9.11 |
|
Mag sec |
12.24 |
|
delta mag (ΔM) |
3.13 |
|
Spectral class |
M3V (red) |
|
| Pri motion ra |
-133 |
|
Sec motion ra |
-001 |
|
| Pri motion dec |
+180 |
|
Sec motion dec |
-001 |
|
| Notes |
N
L
P
(See Notes, Linear solution, 100-year proper motion) |
|
rPM=1.001
This double is not physical.
18428+5938 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 173739 |
31128 |
18 42 47 +59 37 49 |
STF 2398 AB |
2020 |
641 |
181 |
11.4 |
9.11 |
9.96 |
0.85 |
Y |
|
| Show |
|
31128 |
18 42 47 +59 37 49 |
STF 2398 AC |
2013 |
21 |
158 |
216.8 |
9.11 |
12.24 |
3.13 |
|
<=== |
| Show |
|
31128 |
18 42 47 +59 37 49 |
POP 1224 AD |
2008 |
3 |
110 |
100.0 |
9.11 |
13.50 |
4.39 |
|
|
| Show |
|
31129 |
18 42 47 +59 37 37 |
STF 2398 BC |
2000 |
18 |
157 |
202.7 |
9.96 |
12.24 |
2.28 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Draco |
|
SAO |
31128 |
|
HIP |
91768 |
|
Tycho2 |
3930-01791-1 |
|
| HD |
173739 |
|
GL |
Gl 725A |
|
BD |
BD+59 1915 |
|
Distance |
3.57 |
|
| Distance ly |
11.65 |
|
