02507+5554 WAL  19AF

 
 
02h 50m 41.81s +55 53' 43.8" P.A. 24 sep 57.4 mag 3.76,11.44 Sp M3Ib-IIa dist. 269.54 pc (879.24 l.y.)
 
 
Coord 2000
02507+5554
Discov num
WAL  19
Comp
AF
Coord arcsec 2000
02 50 41.81 +55 53 43.8
Date first
1904
Date last
2012
Obs
6
Pa first
29
Pa last
24
P.A. Now (θ)
24°
Sep first
58.0
Sep last
57.4
Sep. Now (ρ)
57.4"
Mag pri
3.76
Mag sec
11.44
delta mag (ΔM)
7.68
Spectral class
M3Ib-IIa (red)
Pri motion ra
+016
Sec motion ra
+000
Pri motion dec
-014
Sec motion dec
-004
Notes
N (See Notes)
rPM=0.887
This double is not physical.
 
 
02507+5554 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Miram 23655 02507+5554 STF 307 AB 1779 2012 53 295 31.4 3.76 8.50 4.74
Show 23655 02507+5554 STF 307 AC 1878 2014 13 269 64.0 3.76 11.61 7.85
Show 23655 02507+5554 SHJ 34 AE 1925 2012 8 297 242.9 3.76 9.24 5.48
Show 23655 02507+5554 WAL 19 AF 1904 2012 6 24 57.4 3.76 11.44 7.68 <===
Show 02507+5554 WRD 1 CD 1878 2012 10 116 5.1 11.61 12.70 1.09
Show 02507+5554 FYM 161 CG 2003 2012 2 230 15.3 11.61 14.00 2.39
Septuple system
7 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
24.4
Precise sep
57.4
Constellation
Perseus
SAO
23655
HIP
13268
Tycho2
3704-01332-1
HD
17506
HR
834
GC
3390
BD
BD+55 714
Bayer
Eta Persei
Bayer name
Eta Per
Flamsteed
15 Persei
Flamsteed name
15 Per
Distance
269.54
Distance ly
879.24
last precise pa
24.4
last precise sep
57.4
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02507+5554 WAL 19 AF 2007 2 25 57.5 3.76 11.44 M3Ib-IIa D 025041.79+555343.9
02507+5554 WAL 19 AF 2012 6 24 57.4 3.76 11.44 M3Ib-IIa N D 025041.79+555343.9

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