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312588 (2009 HZ99)
Classification: Main-belt Asteroid          SPK-ID: 2312588
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1155796783610246 6.0413e-08  
a 2.525191797551301 2.6633e-08 au
q 2.233330941790423 1.5607e-07 au
i 14.82304996264627 6.2845e-06 deg
node 212.0128280806116 2.865e-05 deg
peri 197.7992243322408 4.8482e-05 deg
M 78.73878388977026 4.4792e-05 deg
tp 2458679.927559167573
(2019-Jul-15.42755917)
0.00018076 TDB
period 1465.682767735347
4.01
2.3187e-05
6.348e-08
d
yr
n .2456193167613224 3.8857e-09 deg/d
Q 2.817052653312177 2.9711e-08 au
  Orbit Determination Parameters
   # obs. used (total)      152  
   data-arc span      6418 days (17.57 yr)  
   first obs. used      2002-07-09  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4734  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:47:10  

Additional Information
 Earth MOID = 1.24598 au 
 Jupiter MOID = 2.59527 au 
 T_jup = 3.398 
[ 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 15.9   n/a MPO460290  

312588 (2009 HZ99)          Discovered 2009-Apr-26 by PMO NEO Survey Program at Purple Mountain
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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