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213041 (1998 HJ22)
Classification: Main-belt Asteroid          SPK-ID: 2213041
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .167117328520869 1.1649e-07  
a 2.35040425514626 1.4918e-08 au
q 1.957610975082134 2.7297e-07 au
i 6.237146846123783 1.1976e-05 deg
node 24.2256222449248 4.8534e-05 deg
peri 172.0606976654088 5.075e-05 deg
M 106.2183443261594 1.3925e-05 deg
tp 2458812.162526560731
(2019-Nov-24.66252656)
5.0039e-05 TDB
period 1316.170867895052
3.60
1.253e-05
3.431e-08
d
yr
n .2735207173941989 2.604e-09 deg/d
Q 2.743197535210386 1.7411e-08 au
  Orbit Determination Parameters
   # obs. used (total)      241  
   data-arc span      7593 days (20.79 yr)  
   first obs. used      1998-03-22  
   last obs. used      2019-01-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .64773  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:41:06  

Additional Information
 Earth MOID = .955461 au 
 Jupiter MOID = 2.21082 au 
 T_jup = 3.531 
[ 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 17.0   n/a MPO418141  

213041 (1998 HJ22)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1998 HJ22 = 2005 EU156 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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