02502+7255 HJ 2157 AD
02h 50m 12.03s +72° 54' 51.6" P.A. 68.00 sep 33.7 mag 8.00,12.79 Sp B2.5V dist. 549.45 pc (1792.31 l.y.)
| Coord 2000 |
02502+7255 |
|
Discov num |
HJ 2157 |
|
Comp |
AD |
|
Coord arcsec 2000 |
02 50 12.03 +72 54 51.6 |
|
| Date first |
1893 |
|
Date last |
2015 |
|
Obs |
14 |
|
| Pa first |
67 |
|
Pa last |
67.6 |
|
P.A. Now (θ) |
67.6° |
|
| Sep first |
33.8 |
|
Sep last |
33.733 |
|
Sep. Now (ρ) |
33.733" |
|
| Mag pri |
8.00 |
|
Mag sec |
12.79 |
|
delta mag (ΔM) |
4.79 |
|
Spectral class |
B2.5V (blue-white) |
|
| Pri motion ra |
+000 |
|
Sec motion ra |
+001 |
|
| Pri motion dec |
+001 |
|
Sec motion dec |
+000 |
|
| Notes |
N
U
(See Notes, Proper motion indicates non-physical) |
|
rPM=1.414
This double is not physical.
02502+7255 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
V793 Cas |
4738 |
02 50 12 +72 54 52 |
HJ 2157 AB |
2015 |
15 |
287 |
11.2 |
8.00 |
11.40 |
3.40 |
|
|
| Show |
|
4738 |
02 50 12 +72 54 52 |
HJ 2157 AC |
2015 |
17 |
22 |
24.4 |
8.00 |
10.58 |
2.58 |
|
|
| Show |
|
4738 |
02 50 12 +72 54 52 |
HJ 2157 AD |
2015 |
14 |
68 |
33.7 |
8.00 |
12.79 |
4.79 |
|
<=== |
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
V793 Cas |
|
Constellation |
Cassiopeia |
|
SAO |
4738 |
|
HIP |
13221 |
|
| Tycho2 |
4321-02203-1 |
|
Gaia DR2 |
545771119327389952 |
|
HD |
17179 |
|
BD |
BD+72 145 |
|
| Distance |
549.45 |
|
Distance ly |
1792.31 |
|
