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JPL Small-Body Database Browser
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185864 (2000 HJ9)
Classification: Main-belt Asteroid          SPK-ID: 2185864
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1935533504099075 5.3513e-08  
a 2.576743718741316 1.8309e-08 au
q 2.07800633883125 1.3417e-07 au
i 12.86558593512107 5.7611e-06 deg
node 215.3539306326198 3.0906e-05 deg
peri 52.05114214165746 3.6515e-05 deg
M 277.0584669618429 2.3869e-05 deg
tp 2459348.576596289721
(2021-May-14.07659629)
0.00010238 TDB
period 1510.79405063145
4.14
1.6102e-05
4.408e-08
d
yr
n .2382852910027907 2.5396e-09 deg/d
Q 3.075481098651382 2.1852e-08 au
  Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      8634 days (23.64 yr)  
   first obs. used      1996-06-09  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .69436  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 20:11:09  

Additional Information
 Earth MOID = 1.08974 au 
 Jupiter MOID = 2.05313 au 
 T_jup = 3.365 
[ 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 MPO422724  

185864 (2000 HJ9)          Discovered 2000-Apr-27 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

Alternate Designations
 2000 HJ9 = 2001 TC185 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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