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 117527 09144+0219 HJ 2489 AC 1924 2008 5 298 101.0 3.85 12.61 8.76
Show 117527 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
last precise pa
246.5
last precise sep
20.04
 
 
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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