09144+0219 HJ 2489AB (The Hya)

 
 
09h 14m 21.86s +02 18' 51.3" P.A. 247 sep 20 mag 3.85,9.90 Sp B9.5V dist. 34.79 pc (113.48 l.y.)
 
 
Coord 2000
09144+0219
Discov num
HJ 2489
Comp
AB
Coord arcsec 2000
09 14 21.86 +02 18 51.3
Date first
1782
Date last
2013
Obs
24
Pa first
165
Pa last
247
P.A. Now (θ)
247°
Sep first
60.0
Sep last
20.0
Sep. Now (ρ)
20"
Mag pri
3.85
Mag sec
9.90
delta mag (ΔM)
6.05
Spectral class
B9.5V (blue-white)
Pri motion ra
+129
Sec motion ra
-033
Pri motion dec
-310
Sec motion dec
+026
Notes
N L U (See Notes, Linear solution, Proper motion indicates non-physical)
rPM=1.111
This double is not physical.
 
 
09144+0219 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show The Hya 117527 09144+0219 HJ 2489 AB 1782 2013 24 247 20.0 3.85 9.90 6.05 <===
Show 09144+0219 HJ 2489 AC 1924 2008 5 298 101.0 3.85 12.61 8.76
Show 09144+0219 B 2674 AD 1962 2008 5 145 82.4 3.85 11.60 7.75
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
246.5
Precise sep
20.04
Name
The Hya
Constellation
Hydra
SAO
117527
HIP
45336
Tycho2
0227-02544-1
HD
79469
HR
3665
GC
12743
BD
BD+02 2167
Bayer
Theta Hydrae
Bayer name
The Hya
Flamsteed
22 Hydrae
Flamsteed name
22 Hya
Distance
34.79
Distance ly
113.48
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
09144+0219 HJ 2489 AB 2000 20 234 20.7 3.85 9.90 B9.5V NLD 091421.86+021851.3
09144+0219 HJ 2489 AB 2008 21 241 20.3 3.85 9.90 B9.5V NLD 091421.86+021851.3
09144+0219 HJ 2489 AB 2011 22 243 20.4 3.85 9.90 B9.5V NLD 091421.86+021851.3
09144+0219 HJ 2489 AB 2013 23 247 20.0 3.85 9.90 B9.5V NLD 091421.86+021851.3

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