02507+5554 STF 307 AB (Miram)
02h 50m 41.81s +55° 53' 43.8" P.A. 301.00 sep 28.7 mag 3.76,8.50 Sp M3I+B9V dist. 269.54 pc (879.24 l.y.)
Coord 2000 |
02507+5554 |
|
Discov num |
STF 307 |
|
Comp |
AB |
|
Coord arcsec 2000 |
02 50 41.81 +55 53 43.8 |
|
Date first |
1779 |
|
Date last |
2018 |
|
Obs |
58 |
|
Pa first |
290 |
|
Pa last |
301 |
|
P.A. Now (θ) |
301° |
|
Sep first |
26.0 |
|
Sep last |
28.7 |
|
Sep. Now (ρ) |
28.7" |
|
Mag pri |
3.76 |
|
Mag sec |
8.50 |
|
delta mag (ΔM) |
4.74 |
|
Spectral class |
M3I+B9V (red/blue-white) |
|
Pri motion ra |
+016 |
|
Sec motion ra |
+016 |
|
Pri motion dec |
-014 |
|
Sec motion dec |
-014 |
|
Notes |
N
T
(See Notes, Parallax indicates physical) |
|
This double is physical.
02507+5554 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
Miram |
23655 |
02 50 42 +55 53 44 |
STF 307 AB |
2018 |
58 |
301 |
28.7 |
3.76 |
8.50 |
4.74 |
|
<=== |
Show |
|
23655 |
02 50 42 +55 53 44 |
STF 307 AC |
2014 |
14 |
269 |
64.0 |
3.76 |
11.61 |
7.85 |
|
|
Show |
|
23655 |
02 50 42 +55 53 44 |
SHJ 34 AE |
2012 |
8 |
297 |
242.9 |
3.76 |
9.24 |
5.48 |
|
|
Show |
|
23655 |
02 50 42 +55 53 44 |
WAL 19 AF |
2013 |
7 |
25 |
57.7 |
3.76 |
11.44 |
7.68 |
|
|
Show |
|
|
02 50 34 +55 53 44 |
WRD 1 CD |
2015 |
14 |
116 |
5.2 |
11.61 |
12.70 |
1.09 |
|
|
Show |
|
|
02 50 34 +55 53 44 |
FYM 161 CG |
2015 |
6 |
229 |
15.8 |
11.61 |
14.00 |
2.39 |
|
|
Septuple system
7 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Common name |
Miram |
|
Constellation |
Perseus |
|
SAO |
23655 |
|
HIP |
13268 |
|
Tycho2 |
3704-01332-1 |
|
Gaia DR2 |
454491381980370304 |
|
HD |
17506 |
|
HR |
834 |
|
GC |
3390 |
|
ADS |
2157 |
|
BD |
BD+55 714 |
|
Bayer |
Eta Persei |
|
Bayer name |
Eta Per |
|
Flamsteed |
15 Persei |
|
Flamsteed name |
15 Per |
|
FK5 |
99 |
|
Distance |
269.54 |
|
Distance ly |
879.24 |
|
Bayer greek |
η Per |
|