21378+6402 HJ 1680 AC
21h 37m 40.62s +64° 03' 45.9" P.A. 222.00 sep 21.9 mag 10.50,12.92
| Coord 2000 |
21378+6402 |
|
Discov num |
HJ 1680 |
|
Comp |
AC |
|
Coord arcsec 2000 |
21 37 40.62 +64 03 45.9 |
|
| Date first |
1828 |
|
Date last |
2015 |
|
Obs |
9 |
|
| Pa first |
225 |
|
Pa last |
221.8 |
|
P.A. Now (θ) |
221.8° |
|
| Sep first |
10.0 |
|
Sep last |
21.893 |
|
Sep. Now (ρ) |
21.893" |
|
| Mag pri |
10.50 |
|
Mag sec |
12.92 |
|
delta mag (ΔM) |
2.42 |
|
Spectral class |
|
|
| Pri motion ra |
-006 |
|
Sec motion ra |
-009 |
|
| Pri motion dec |
-008 |
|
Sec motion dec |
-001 |
|
| Notes |
|
|
rPM=0.762
Nature of this double is uncertain.
21378+6402 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
21 37 41 +64 03 46 |
HJ 1680 AB |
2015 |
9 |
268 |
15.8 |
10.50 |
12.47 |
1.97 |
|
|
| Show |
|
|
21 37 41 +64 03 46 |
HJ 1680 AC |
2015 |
9 |
222 |
21.9 |
10.50 |
12.92 |
2.42 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cepheus |
|
Tycho2 |
4257-00881-1 |
|
Gaia DR2 |
2217536596123775104 |
|
