18398+2800 COU 640 AB (HD 336549)
18h 39m 47.11s +27° 59' 55.9" P.A. 90.00 sep 0.4 mag 10.30,10.60 Sp F2
Coord 2000 |
18398+2800 |
|
Discov num |
COU 640 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 39 47.11 +27 59 55.9 |
|
Date first |
1971 |
|
Date last |
2014 |
|
Obs |
5 |
|
Pa first |
96 |
|
Pa last |
89.8 |
|
P.A. Now (θ) |
89.8° |
|
Sep first |
0.4 |
|
Sep last |
0.432 |
|
Sep. Now (ρ) |
0.432" |
|
Mag pri |
10.30 |
|
Mag sec |
10.60 |
|
delta mag (ΔM) |
0.3 |
|
Spectral class |
F2 (yellow-white) |
|
Pri motion ra |
-005 |
|
Sec motion ra |
|
|
Pri motion dec |
+002 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
18398+2800 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 336549 |
|
18 39 47 +27 59 56 |
COU 640 AB |
2014 |
5 |
90 |
0.4 |
10.30 |
10.60 |
0.30 |
|
<=== |
Show |
|
|
18 39 47 +27 59 56 |
SLE 97 AC |
2015 |
7 |
60 |
10.1 |
10.42 |
12.50 |
2.08 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 336549 |
|
Constellation |
Lyra |
|
Tycho2 |
2115-00458-1 |
|
HD |
336549 |
|