15394+3638 STF 1965 (Zet1 CrB)
15h 39m 22.68s +36° 38' 09.0" P.A. 306.00 sep 6.3 mag 4.96,5.91 Sp B7V+B9V dist. 145.14 pc (473.45 l.y.)
| Coord 2000 |
15394+3638 |
|
Discov num |
STF1965 |
|
Comp |
|
|
Coord arcsec 2000 |
15 39 22.68 +36 38 09.0 |
|
| Date first |
1779 |
|
Date last |
2024 |
|
Obs |
345 |
|
| Pa first |
296 |
|
Pa last |
305.7 |
|
P.A. Now (θ) |
305.7° |
|
| Sep first |
5.5 |
|
Sep last |
6.3 |
|
Sep. Now (ρ) |
6.3" |
|
| Mag pri |
4.96 |
|
Mag sec |
5.91 |
|
delta mag (ΔM) |
0.95 |
|
Spectral class |
B7V+B9V (blue-white/blue-white) |
|
| Pri motion ra |
-017 |
|
Sec motion ra |
-015 |
|
| Pri motion dec |
-004 |
|
Sec motion dec |
-007 |
|
| Notes |
N
(See Notes) |
|
rPM=0.206 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
Zet1 CrB |
|
Constellation |
Corona Borealis |
|
SAO |
64834 |
|
HIP |
76669 |
|
| Tycho2 |
2577-01754-1 |
|
Gaia DR2 |
1374695306328813568 |
|
HD |
139891 |
|
HR |
5833 |
|
| GC |
21063 |
|
ADS |
9737 |
|
BD |
BD+37 2665 |
|
Bayer |
Zeta 1 Coronae Borealis |
|
| Bayer name |
Zet1 CrB |
|
Flamsteed |
7 Coronae Borealis |
|
Flamsteed name |
7 CrB |
|
Distance |
145.14 |
|
| Distance ly |
473.45 |
|
Bayer greek |
ζ1 CrB |
|
