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JPL Small-Body Database Browser
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100843 (1998 HH21)
Classification: Main-belt Asteroid          SPK-ID: 2100843
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1550070389500205 4.3598e-08  
a 2.375416370249775 1.1735e-08 au
q 2.007210112423952 1.0421e-07 au
i 1.477230750142816 4.0408e-06 deg
node 59.55612273928205 0.00022089 deg
peri 153.948081653242 0.00022159 deg
M 1.826885855701484 1.9539e-05 deg
tp 2458993.713951532965
(2020-May-24.21395153)		 7.2558e-05 TDB
period 1337.235952924124
3.66		 9.9093e-06
2.713e-08		 d
yr
n .2692120259052194 1.9949e-09 deg/d
Q 2.743622628075598 1.3554e-08 au
   Orbit Determination Parameters
   # obs. used (total)      379  
   data-arc span      8481 days (23.22 yr)  
   first obs. used      1996-11-08  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59872  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:12:10  

Additional Information
 Earth MOID = 1.00099 au 
 Jupiter MOID = 2.22133 au 
 T_jup = 3.525 
[ 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 16.6   n/a MPO422320  

100843 (1998 HH21)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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