15549+3422 STT 302 AB (HD 142742)
15h 54m 56.85s +34° 21' 45.0" P.A. 51.00 sep 27.9 mag 7.16,10.42 Sp A3V dist. 183.82 pc (599.62 l.y.)
Coord 2000 |
15549+3422 |
|
Discov num |
STT 302 |
|
Comp |
AB |
|
Coord arcsec 2000 |
15 54 56.85 +34 21 45.0 |
|
Date first |
1843 |
|
Date last |
2017 |
|
Obs |
29 |
|
Pa first |
54 |
|
Pa last |
50.5 |
|
P.A. Now (θ) |
50.5° |
|
Sep first |
28.6 |
|
Sep last |
27.9 |
|
Sep. Now (ρ) |
27.9" |
|
Mag pri |
7.16 |
|
Mag sec |
10.42 |
|
delta mag (ΔM) |
3.26 |
|
Spectral class |
A3V (white) |
|
Pri motion ra |
-006 |
|
Sec motion ra |
-015 |
|
Pri motion dec |
+005 |
|
Sec motion dec |
+009 |
|
Notes |
|
|
rPM=0.563
Nature of this double is uncertain.
15549+3422 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 142742 |
64970 |
15 54 57 +34 21 45 |
STT 302 AB |
2017 |
29 |
51 |
27.9 |
7.16 |
10.42 |
3.26 |
|
<=== |
Show |
|
64970 |
15 54 57 +34 21 45 |
WAL 68 AC |
2015 |
9 |
358 |
65.3 |
7.14 |
12.92 |
5.78 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 142742 |
|
Constellation |
Corona Borealis |
|
SAO |
64970 |
|
HIP |
77933 |
|
Tycho2 |
2575-01509-1 |
|
Gaia DR2 |
1371690959524666496 |
|
HD |
142742 |
|
GC |
21385 |
|
BD |
BD+34 2709 |
|
Distance |
183.82 |
|
Distance ly |
599.62 |
|