18291+0408 A 581 AB
18h 29m 03.59s +04° 08' 02.3" P.A. 140.00 sep 0.4 mag 8.90,9.40 Sp B8
| Coord 2000 |
18291+0408 |
|
Discov num |
A 581 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 29 03.59 +04 08 02.3 |
|
| Date first |
1903 |
|
Date last |
2016 |
|
Obs |
24 |
|
| Pa first |
80 |
|
Pa last |
140 |
|
P.A. Now (θ) |
140° |
|
| Sep first |
0.3 |
|
Sep last |
0.377 |
|
Sep. Now (ρ) |
0.377" |
|
| Mag pri |
8.90 |
|
Mag sec |
9.40 |
|
delta mag (ΔM) |
0.5 |
|
Spectral class |
B8 (blue-white) |
|
| Pri motion ra |
+006 |
|
Sec motion ra |
|
|
| Pri motion dec |
-013 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
18291+0408 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
18 29 04 +04 08 02 |
A 581 AB |
2016 |
24 |
140 |
0.4 |
8.90 |
9.40 |
0.50 |
|
<=== |
| Show |
|
|
18 29 04 +04 08 02 |
A 581 AB,C |
2015 |
8 |
227 |
10.2 |
8.54 |
15.40 |
6.86 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Ophiuchus |
|
Tycho2 |
0441-01364-1 |
|
Gaia DR2 |
4284104400298787968 |
|
