00084+2905 H 5  32AB (Sirrah)

 
 
00H 08M 23.17S +29 05' 27.0" P.A. 285 SEP 90.8 MAG 2.22,11.11 SP B8IVPMNHG DIST. 29.74 PC (97.01 L.Y.)
 
 
Coord 2000
00084+2905
Discov num
H 5  32
Comp
AB
Coord arcsec 2000
00 08 23.17 +29 05 27.0
Date first
1781
Date last
2011
Obs
47
Pa first
259
Pa last
285
P.A. Now (θ)
285°
Sep first
55.5
Sep last
90.8
Sep. Now (ρ)
90.8"
Mag pri
2.22
Mag sec
11.11
delta mag (ΔM)
8.89
Spectral class
B8IVpMnHg (blue-white)
Pri motion ra
+138
Sec motion ra
+003
Pri motion dec
-163
Sec motion dec
-015
Notes
N L U (See Notes, Linear solution, Proper motion indicates non-physical)
rPM=0.94 (> 0.8, Optical double)
 
 
00084+2905 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 73765 00084+2905 MKT 11 Aa,Ab 1988 1989 42 241 0.0 2.22 4.21 1.99 Y
Show Sirrah 73765 00084+2905 H 5 32 AB 1781 2011 47 285 90.8 2.22 11.11 8.89 <===
Show 73765 00084+2905 JNN 1 AC 2008 2009 2 5 6.7 2.29 19.60 17.31
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name
Sirrah
Meaning
navel (the stallion)
Other names
ALPHERATZ
Constellation
Andromeda
SAO
73765
HIP
677
HD
358
HR
15
GC
127
BD
BD+28 4
Bayer
Alpha Andromedae
Bayer name
Alp And
Flamsteed
21 Andromedae
Flamsteed name
21 And
Distance
29.74
Distance ly
97.01
last precise pa
285.3
last precise sep
90.81