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JPL Small-Body Database Browser
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56220 (1999 HC11)
Classification: Main-belt Asteroid          SPK-ID: 2056220
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09465440212355666 4.5908e-08  
a 2.994972771375688 2.1122e-08 au
q 2.711485414324791 1.438e-07 au
i 9.871881727448796 5.701e-06 deg
node 29.1607240829936 2.7125e-05 deg
peri 285.8311679468512 4.0101e-05 deg
M 213.4359455317584 3.0311e-05 deg
tp 2459371.248546241267
(2021-Jun-05.74854624)
0.00016032 TDB
period 1893.16185099792
5.18
2.0028e-05
5.483e-08
d
yr
n .1901580680015486 2.0117e-09 deg/d
Q 3.278460128426585 2.3122e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1281  
   data-arc span      16396 days (44.89 yr)  
   first obs. used      1974-06-17  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5923  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:09:02  

Additional Information
 Earth MOID = 1.71908 au 
 Jupiter MOID = 2.02422 au 
 T_jup = 3.226 
[ 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 13.6   n/a MPO474444  

56220 (1999 HC11)          Discovered 1999-Apr-17 by LINEAR at Socorro
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 HC11 = 2001 QQ76 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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