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312583 (2009 HH81)
Classification: Main-belt Asteroid          SPK-ID: 2312583
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1218514971315762 4.2586e-08  
a 2.620342599061154 2.6015e-08 au
q 2.301049930367906 1.2035e-07 au
i 13.15038192011629 4.7104e-06 deg
node 132.5605109006122 2.0286e-05 deg
peri 88.9687225258736 3.1164e-05 deg
M 216.3254413324968 2.8184e-05 deg
tp 2459618.819458213570
(2022-Feb-08.31945821)		 0.0001271 TDB
period 1549.30007804668
4.24		 2.3073e-05
6.317e-08		 d
yr
n .2323629909409669 3.4604e-09 deg/d
Q 2.939635267754401 2.9185e-08 au
   Orbit Determination Parameters
   # obs. used (total)      393  
   data-arc span      8175 days (22.38 yr)  
   first obs. used      1997-07-06  
   last obs. used      2019-11-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57906  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 21:32:49  

Additional Information
 Earth MOID = 1.33879 au 
 Jupiter MOID = 2.16692 au 
 T_jup = 3.358 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO503319  

312583 (2009 HH81)          Discovered 2009-Apr-28 by Tozzi, F. at Skylive
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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Alternate Designations
 2009 HH81 = 1997 NY3 = 2000 CW124 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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