18316-0353 A 87 CD
18h 31m 32.93s -03° 53' 21.5" sep 4.0 mag 10.10,14.50 Sp A0IV
Coord 2000 |
18316-0353 |
|
Discov num |
A 87 |
|
Comp |
CD |
|
Coord arcsec 2000 |
18 31 32.93 -03 53 21.5 |
|
Date first |
1900 |
|
Date last |
2015 |
|
Obs |
9 |
|
Pa first |
358 |
|
Pa last |
359.5 |
|
P.A. Now (θ) |
359.5° |
|
Sep first |
4.1 |
|
Sep last |
3.99 |
|
Sep. Now (ρ) |
3.99" |
|
Mag pri |
10.10 |
|
Mag sec |
14.50 |
|
delta mag (ΔM) |
4.4 |
|
Spectral class |
A0IV (white) |
|
Pri motion ra |
-063 |
|
Sec motion ra |
|
|
Pri motion dec |
+056 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
18316-0353 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
|
18 31 33 -03 53 24 |
A 87 AB |
2013 |
8 |
294 |
1.8 |
10.10 |
13.10 |
3.00 |
|
|
Show |
|
|
18 31 33 -03 53 24 |
A 87 AC |
2015 |
17 |
316 |
4.2 |
10.10 |
10.10 |
0.00 |
|
|
Show |
|
|
18 31 33 -03 53 22 |
A 87 CD |
2015 |
9 |
0 |
4.0 |
10.10 |
14.50 |
4.40 |
|
<=== |
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Serpens |
|
Gaia DR2 |
4257885858334520448 |
|