18462+4408 HDS 2662 AB (HD 173978)
18h 46m 12.21s +44° 08' 08.3" P.A. 257.00 sep 0.8 mag 8.19,11.28 Sp A5 dist. 292.4 pc (953.81 l.y.)
Coord 2000 |
18462+4408 |
|
Discov num |
HDS2662 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 46 12.21 +44 08 08.3 |
|
Date first |
1991 |
|
Date last |
2012 |
|
Obs |
3 |
|
Pa first |
259 |
|
Pa last |
256.6 |
|
P.A. Now (θ) |
256.6° |
|
Sep first |
0.7 |
|
Sep last |
0.77 |
|
Sep. Now (ρ) |
0.77" |
|
Mag pri |
8.19 |
|
Mag sec |
11.28 |
|
delta mag (ΔM) |
3.09 |
|
Spectral class |
A5 (white) |
|
Pri motion ra |
+001 |
|
Sec motion ra |
|
|
Pri motion dec |
+012 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
18462+4408 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 173978 |
47781 |
18 46 12 +44 08 08 |
HDS 2662 AB |
2012 |
3 |
257 |
0.8 |
8.19 |
11.28 |
3.09 |
|
<=== |
Show |
|
47781 |
18 46 12 +44 08 08 |
ARY 54 AC |
2015 |
17 |
47 |
76.0 |
8.11 |
8.90 |
0.79 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 173978 |
|
Constellation |
Lyra |
|
SAO |
47781 |
|
HIP |
92096 |
|
Tycho2 |
3130-01670-1 |
|
Gaia DR2 |
2117303428207967488 |
|
HD |
173978 |
|
BD |
BD+43 3066 |
|
Distance |
292.4 |
|
Distance ly |
953.81 |
|