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385516 (2004 HC3)
Classification: Main-belt Asteroid          SPK-ID: 2385516
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1613959806679504 9.9388e-08  
a 2.278674417404033 1.5194e-08 au
q 1.910905525184138 2.3507e-07 au
i 4.87974550680988 5.7959e-06 deg
node 93.78879101056333 9.1266e-05 deg
peri 118.4363722815818 9.3335e-05 deg
M 302.1163479880616 2.0901e-05 deg
tp 2459402.511114598540
(2021-Jul-07.01111460)
7.4112e-05 TDB
period 1256.382393434247
3.44
1.2566e-05
3.44e-08
d
yr
n .2865369666761736 2.8659e-09 deg/d
Q 2.646443309623927 1.7646e-08 au
  Orbit Determination Parameters
   # obs. used (total)      179  
   data-arc span      7208 days (19.73 yr)  
   first obs. used      2001-07-12  
   last obs. used      2021-04-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51837  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 12:29:53  

Additional Information
 Earth MOID = .909359 au 
 Jupiter MOID = 2.32508 au 
 T_jup = 3.585 
[ 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 17.68   n/a MPCxxxxx  

385516 (2004 HC3)          Discovered 2004-Mar-31 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-02-19

Alternate Designations
 2004 HC3 = 2011 KK2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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