18405+3139 HO 437 AB
18h 40m 29.71s +31° 38' 36.4" P.A. 140.00 sep 0.3 mag 9.00,7.71 Sp A5 dist. 168.07 pc (548.24 l.y.)
Coord 2000 |
18405+3139 |
|
Discov num |
HO 437 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 40 29.71 +31 38 36.4 |
|
Date first |
1892 |
|
Date last |
2016 |
|
Obs |
41 |
|
Pa first |
116 |
|
Pa last |
140.4 |
|
P.A. Now (θ) |
140.4° |
|
Sep first |
0.4 |
|
Sep last |
0.27 |
|
Sep. Now (ρ) |
0.27" |
|
Mag pri |
9.00 |
|
Mag sec |
7.71 |
|
delta mag (ΔM) |
1.29 |
|
Spectral class |
A5 (white) |
|
Pri motion ra |
-006 |
|
Sec motion ra |
-006 |
|
Pri motion dec |
+002 |
|
Sec motion dec |
+002 |
|
Notes |
|
|
Nature of this double is uncertain.
18405+3139 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
67238 |
18 40 30 +31 38 36 |
HO 437 AB |
2016 |
41 |
140 |
0.3 |
9.00 |
7.71 |
1.29 |
|
<=== |
Show |
|
67238 |
18 40 30 +31 38 36 |
HO 437 AC |
2014 |
8 |
272 |
39.9 |
9.00 |
11.30 |
2.30 |
|
|
Show |
|
67238 |
18 40 30 +31 38 36 |
HO 437 AE |
2006 |
5 |
288 |
22.1 |
9.00 |
15.20 |
6.20 |
|
|
Show |
|
|
18 40 27 +31 38 37 |
HO 437 CD |
2015 |
16 |
347 |
4.5 |
11.30 |
11.70 |
0.40 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Lyra |
|
SAO |
67238 |
|
HIP |
91579 |
|
Tycho2 |
2637-01136-1 |
|
HD |
172729 |
|
BD |
BD+31 3327 |
|
Distance |
168.07 |
|
Distance ly |
548.24 |
|