18402+3822 HDS 2644 (HD 172741)
18h 40m 12.19s +38° 22' 01.8" P.A. 76.00 sep 0.1 mag 6.87,8.06 Sp A6m dist. 146.2 pc (476.9 l.y.)
Coord 2000 |
18402+3822 |
|
Discov num |
HDS2644 |
|
Comp |
|
|
Coord arcsec 2000 |
18 40 12.19 +38 22 01.8 |
|
Date first |
1991 |
|
Date last |
2016 |
|
Obs |
4 |
|
Pa first |
275 |
|
Pa last |
76.4 |
|
P.A. Now (θ) |
76.4° |
|
Sep first |
0.1 |
|
Sep last |
0.095 |
|
Sep. Now (ρ) |
0.095" |
|
Mag pri |
6.87 |
|
Mag sec |
8.06 |
|
delta mag (ΔM) |
1.19 |
|
Spectral class |
A6m (white) |
|
Pri motion ra |
+019 |
|
Sec motion ra |
|
|
Pri motion dec |
+007 |
|
Sec motion dec |
|
|
Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 172741 |
|
Constellation |
Lyra |
|
SAO |
67233 |
|
HIP |
91552 |
|
Tycho2 |
3118-01380-1 |
|
Gaia DR2 |
2097673095503916288 |
|
HD |
172741 |
|
HR |
7019 |
|
GC |
25553 |
|
BD |
BD+38 3254 |
|
Distance |
146.2 |
|
Distance ly |
476.9 |
|