18178+4351 A 578 AB
18h 17m 49.51s +43° 50' 32.0" P.A. 167.00 sep 1.8 mag 9.13,12.24 Sp F8 dist. 129.03 pc (420.9 l.y.)
| Coord 2000 |
18178+4351 |
|
Discov num |
A 578 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 17 49.51 +43 50 32.0 |
|
| Date first |
1903 |
|
Date last |
2014 |
|
Obs |
26 |
|
| Pa first |
176 |
|
Pa last |
167.1 |
|
P.A. Now (θ) |
167.1° |
|
| Sep first |
1.7 |
|
Sep last |
1.839 |
|
Sep. Now (ρ) |
1.839" |
|
| Mag pri |
9.13 |
|
Mag sec |
12.24 |
|
delta mag (ΔM) |
3.11 |
|
Spectral class |
F8 (yellow-white) |
|
| Pri motion ra |
-019 |
|
Sec motion ra |
-020 |
|
| Pri motion dec |
-010 |
|
Sec motion dec |
-010 |
|
| Notes |
V
(Proper motion indicates physical) |
|
rPM=0.045 (< 0.3, Physical double)
This double is physical.
18178+4351 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
18 17 50 +43 50 32 |
A 578 Aa,Ab |
2014 |
42 |
244 |
0.3 |
9.55 |
10.64 |
1.09 |
Y |
|
| Show |
|
|
18 17 50 +43 50 32 |
A 578 AB |
2014 |
26 |
167 |
1.8 |
9.13 |
12.24 |
3.11 |
|
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Lyra |
|
HIP |
89655 |
|
Tycho2 |
3115-00363-1 |
|
Gaia DR2 |
2114710062530870912 |
|
| BD |
BD+43 2938 |
|
Distance |
129.03 |
|
Distance ly |
420.9 |
|
