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249460 (2009 HZ84)
Classification: Main-belt Asteroid          SPK-ID: 2249460
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2276498510308717 5.701e-08  
a 2.435400332901433 2.0208e-08 au
q 1.880981809915886 1.3276e-07 au
i 2.162549407266587 5.4849e-06 deg
node 179.6823444183681 0.00011819 deg
peri 166.4802880639264 0.00011882 deg
M 198.6602466448186 1.6661e-05 deg
tp 2459622.646778095488
(2022-Feb-12.14677810)
7.0106e-05 TDB
period 1388.206164052518
3.80
1.7278e-05
4.73e-08
d
yr
n .2593274755019606 3.2277e-09 deg/d
Q 2.989818855886979 2.4808e-08 au
  Orbit Determination Parameters
   # obs. used (total)      434  
   data-arc span      6922 days (18.95 yr)  
   first obs. used      2001-02-20  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51177  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:23:48  

Additional Information
 Earth MOID = .874034 au 
 Jupiter MOID = 2.43328 au 
 T_jup = 3.468 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.6   n/a MPO413153  
rotation period rot_per 3.50 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

249460 (2009 HZ84)          Discovered 2009-Apr-28 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

Alternate Designations
 2009 HZ84 = 2005 ED158 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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