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