02181+5731 S   409AD

 
 
02h 18m 04.58s +57 30' 58.7" P.A. 136 sep 123.4 mag 6.11,9.62 Sp G7III dist. 251.26 pc (819.61 l.y.)
 
 
Coord 2000
02181+5731
Discov num
S   409
Comp
AD
Coord arcsec 2000
02 18 04.58 +57 30 58.7
Date first
1824
Date last
2011
Obs
20
Pa first
136
Pa last
136
P.A. Now (θ)
136°
Sep first
124.5
Sep last
123.4
Sep. Now (ρ)
123.4"
Mag pri
6.11
Mag sec
9.62
delta mag (ΔM)
3.51
Spectral class
G7III (yellow)
Pri motion ra
-013
Sec motion ra
-007
Pri motion dec
-002
Sec motion dec
+004
Notes
N (See Notes)
rPM=0.645
Nature of this double is uncertain.
 
 
02181+5731 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Chi Per 23149 02181+5731 BU 1170 A,BC 1835 2013 12 358 68.7 6.11 12.29 6.18
Show 23149 02181+5731 S 409 AD 1824 2011 20 136 123.4 6.11 9.62 3.51 <===
Show 23149 02181+5731 BU 1170 AE 1880 2003 7 12 207.5 6.11 12.39 6.28
Show 23149 02181+5731 BU 1170 BC 1890 1958 4 313 0.3 11.50 11.70 0.20
Quintuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
136.4
Precise sep
123.44
Constellation
Perseus
SAO
23149
HIP
10729
Tycho2
3694-02581-1
HD
13994
HR
662
GC
2752
BD
BD+56 486
Bayer
Chi Persei
Bayer name
Chi Per
Flamsteed
7 Persei
Flamsteed name
7 Per
Distance
251.26
Distance ly
819.61
last precise pa
136.4
last precise sep
123.44
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02181+5731 S 409 AD 2002 16 138 123.4 6.11 9.62 G7III D 021804.60+573058.8
02181+5731 S 409 AD 2010 17 137 125.8 6.11 9.62 G7III N D 021804.58+573058.7
02181+5731 S 409 AD 2011 19 136 123.4 6.11 9.62 G7III N D 021804.58+573058.7

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