18389+5221 STF 2368 AB (HD 172712)
18h 38m 51.27s +52° 20' 38.2" P.A. 321.00 sep 1.9 mag 7.63,7.77 Sp A3 dist. 263.16 pc (858.43 l.y.)
Coord 2000 |
18389+5221 |
|
Discov num |
STF2368 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 38 51.27 +52 20 38.2 |
|
Date first |
1831 |
|
Date last |
2017 |
|
Obs |
94 |
|
Pa first |
331 |
|
Pa last |
320.9 |
|
P.A. Now (θ) |
320.9° |
|
Sep first |
2.0 |
|
Sep last |
1.915 |
|
Sep. Now (ρ) |
1.915" |
|
Mag pri |
7.63 |
|
Mag sec |
7.77 |
|
delta mag (ΔM) |
0.14 |
|
Spectral class |
A3 (white) |
|
Pri motion ra |
+008 |
|
Sec motion ra |
+008 |
|
Pri motion dec |
-003 |
|
Sec motion dec |
-003 |
|
Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
18389+5221 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 172712 |
31086 |
18 38 51 +52 20 38 |
STF 2368 AB |
2017 |
94 |
321 |
1.9 |
7.63 |
7.77 |
0.14 |
|
<=== |
Show |
|
31086 |
18 38 51 +52 20 38 |
STF 2368 AC |
2015 |
11 |
125 |
36.6 |
7.63 |
12.33 |
4.70 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 172712 |
|
Constellation |
Draco |
|
SAO |
31086 |
|
HIP |
91436 |
|
Tycho2 |
3539-00897-1 |
|
Gaia DR2 |
2145517622427994624 |
|
HD |
172712 |
|
GC |
25534 |
|
BD |
BD+52 2258 |
|
Distance |
263.16 |
|
Distance ly |
858.43 |
|