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118220 (1996 HA21)
Classification: Main-belt Asteroid          SPK-ID: 2118220
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1456307677960886 3.3437e-08  
a 2.439718411204033 1.0869e-08 au
q 2.084420345774136 7.7794e-08 au
i 2.240274630973957 3.859e-06 deg
node 187.9301676936486 8.0958e-05 deg
peri 332.8805673260343 8.239e-05 deg
M 213.3992077504894 1.741e-05 deg
tp 2459767.315605619554
(2022-Jul-06.81560562)
6.9964e-05 TDB
period 1391.899831453473
3.81
9.301e-06
2.546e-08
d
yr
n .2586393013813895 1.7283e-09 deg/d
Q 2.79501647663393 1.2451e-08 au
  Orbit Determination Parameters
   # obs. used (total)      753  
   data-arc span      9007 days (24.66 yr)  
   first obs. used      1996-04-18  
   last obs. used      2020-12-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51617  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:56:15  

Additional Information
 Earth MOID = 1.09286 au 
 Jupiter MOID = 2.18564 au 
 T_jup = 3.487 
[ 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 16.3   n/a MPO432685  

118220 (1996 HA21)          Discovered 1996-Apr-18 by Elst, E. W. at La Silla
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

Alternate Designations
 1996 HA21 = 2001 QG146 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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