12154+5702 BLL 29 AB (Megrez)
12h 15m 25.45s +57° 01' 57.4" P.A. 75.00 sep 181.9 mag 3.30,10.21 Sp A2V dist. 24.69 pc (80.54 l.y.)
Coord 2000 |
12154+5702 |
|
Discov num |
BLL 29 |
|
Comp |
AB |
|
Coord arcsec 2000 |
12 15 25.45 +57 01 57.4 |
|
Date first |
1878 |
|
Date last |
2020 |
|
Obs |
17 |
|
Pa first |
73 |
|
Pa last |
74.9 |
|
P.A. Now (θ) |
74.9° |
|
Sep first |
192.4 |
|
Sep last |
181.938 |
|
Sep. Now (ρ) |
181.938" |
|
Mag pri |
3.30 |
|
Mag sec |
10.21 |
|
delta mag (ΔM) |
6.91 |
|
Spectral class |
A2V (white) |
|
Pri motion ra |
+104 |
|
Sec motion ra |
+020 |
|
Pri motion dec |
+007 |
|
Sec motion dec |
-018 |
|
Notes |
N
S
(See Notes, Parallax indidates non-physical) |
|
rPM=0.841
This double is not physical.
12154+5702 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
Megrez |
28315 |
12 15 25 +57 01 57 |
BLL 29 AB |
2020 |
17 |
75 |
181.9 |
3.30 |
10.21 |
6.91 |
|
<=== |
Show |
|
28315 |
12 15 25 +57 01 57 |
BUP 140 AC |
2020 |
9 |
130 |
174.8 |
3.30 |
11.62 |
8.32 |
|
|
Show |
|
28315 |
12 15 25 +57 01 57 |
JNN 240 AD |
2011 |
2 |
113 |
3.3 |
3.31 |
18.40 |
15.09 |
|
|
Show |
|
28315 |
12 15 25 +57 01 57 |
JNN 240 AE |
2011 |
2 |
169 |
5.7 |
3.31 |
19.30 |
15.99 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Common name |
Megrez |
|
Var name |
NSV5513 UMa |
|
Constellation |
Ursa Major |
|
SAO |
28315 |
|
HIP |
59774 |
|
Tycho2 |
3837-01070-1 |
|
Gaia DR2 |
1575287046603149056 |
|
HD |
106591 |
|
HR |
4660 |
|
GC |
16736 |
|
GL |
Gl 459 |
|
BD |
BD+57 1363 |
|
Bayer |
Delta Ursae Majoris |
|
Bayer name |
Del UMa |
|
Flamsteed |
69 Ursae Majoris |
|
Flamsteed name |
69 UMa |
|
FK5 |
456 |
|
Distance |
24.69 |
|
Distance ly |
80.54 |
|
Bayer greek |
δ UMa |
|