00084+2905 H 5  32AB (Sirrah)

 
 
00h 08m 23.17s +29 05' 27.0" P.A. 285 sep 91.2 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
2016
Obs
48
Pa first
259
Pa last
285
P.A. Now (θ)
285°
Sep first
55.5
Sep last
91.2
Sep. Now (ρ)
91.2"
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=0.938
This double is not physical.
 
 
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 2016 48 285 91.2 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
 
 
Precise pa
285.3
Precise sep
91.22
Common name
Sirrah
Meaning
navel (the stallion)
Other names
ALPHERATZ
Cdsa2 id
H 5 32 AB
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
Ra deg
0.13976944444444445
De deg
29.090833333333332
Distance
29.74
Distance ly
97.01
last precise pa
285.3
last precise sep
91.22
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
00084+2905 H 5 32 AB 2007 42 284 90.8 2.22 11.11 B8IVpMnHg NLD 000823.17+290527.0
00084+2905 H 5 32 AB 2008 43 284 89.6 2.22 11.11 B8IVpMnHg NLD 000823.17+290527.0
00084+2905 H 5 32 AB 2011 46 285 90.8 2.22 11.11 B8IVpMnHg NLD 000823.17+290527.0
00084+2905 H 5 32 AB 2016 48 285 91.2 2.22 11.11 B8IVpMnHg NL U 000823.17+290527.0

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