18238+5139 ES 187 AB (HD 169816)
18h 23m 45.03s +51° 38' 55.8" P.A. 206.00 sep 2.5 mag 9.32,9.43 Sp G5 dist. 61.31 pc (199.99 l.y.)
| Coord 2000 |
18238+5139 |
|
Discov num |
ES 187 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 23 45.03 +51 38 55.8 |
|
| Date first |
1903 |
|
Date last |
2018 |
|
Obs |
31 |
|
| Pa first |
199 |
|
Pa last |
206.3 |
|
P.A. Now (θ) |
206.3° |
|
| Sep first |
2.7 |
|
Sep last |
2.542 |
|
Sep. Now (ρ) |
2.542" |
|
| Mag pri |
9.32 |
|
Mag sec |
9.43 |
|
delta mag (ΔM) |
0.11 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
+057 |
|
Sec motion ra |
+047 |
|
| Pri motion dec |
+147 |
|
Sec motion dec |
+132 |
|
| Notes |
N
(See Notes) |
|
rPM=0.114 (< 0.3, Physical double)
This double is physical.
18238+5139 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 169816 |
30942 |
18 23 45 +51 38 56 |
ES 187 AB |
2018 |
31 |
206 |
2.5 |
9.32 |
9.43 |
0.11 |
|
<=== |
| Show |
|
30942 |
18 23 45 +51 38 56 |
ES 187 AC |
2016 |
19 |
124 |
91.3 |
9.32 |
10.33 |
1.01 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 169816 |
|
Constellation |
Draco |
|
SAO |
30942 |
|
HIP |
90141 |
|
| Tycho2 |
3538-02027-1 |
|
Gaia DR2 |
2124268868729815936 |
|
HD |
169816 |
|
GC |
25136 |
|
| BD |
BD+51 2372 |
|
Distance |
61.31 |
|
Distance ly |
199.99 |
|
