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312572 (2009 HB42)
Classification: Main-belt Asteroid          SPK-ID: 2312572
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 .05690883900554573 4.3638e-08  
a 2.710626371915374 2.6455e-08 au
q 2.556367772111856 1.1603e-07 au
i 4.953514873305396 4.4528e-06 deg
node 95.47853739044366 7.7632e-05 deg
peri 181.537882637482 9.9869e-05 deg
M 119.3635554199597 6.214e-05 deg
tp 2458460.029291880835
(2018-Dec-07.52929188)
0.00028335 TDB
period 1630.057468029842
4.46
2.3863e-05
6.533e-08
d
yr
n .2208511092772156 3.2332e-09 deg/d
Q 2.864884971718893 2.7961e-08 au
  Orbit Determination Parameters
   # obs. used (total)      211  
   data-arc span      4740 days (12.98 yr)  
   first obs. used      2006-10-22  
   last obs. used      2019-10-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58154  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 08:11:34  

Additional Information
 Earth MOID = 1.53995 au 
 Jupiter MOID = 2.19598 au 
 T_jup = 3.355 
[ 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 16.5   n/a MPO450244  

312572 (2009 HB42)          Discovered 2009-Apr-20 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

Alternate Designations
 2009 HB42 = 2008 AT50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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