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227965 (2007 HC22)
Classification: Main-belt Asteroid          SPK-ID: 2227965
[ 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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0837028764476451 5.0913e-08  
a 3.112454583969154 3.4836e-08 au
q 2.851933182478277 1.5401e-07 au
i 10.57123920961722 5.4661e-06 deg
node 50.79263500573723 2.9335e-05 deg
peri 258.8312292029399 4.4534e-05 deg
M 97.19962765345051 3.3956e-05 deg
tp 2458658.979300677301
(2019-Jun-24.47930068)		 0.00018929 TDB
period 2005.639902770256
5.49		 3.3672e-05
9.219e-08		 d
yr
n .1794938361082446 3.0134e-09 deg/d
Q 3.372975985460031 3.7752e-08 au
   Orbit Determination Parameters
   # obs. used (total)      287  
   data-arc span      8127 days (22.25 yr)  
   first obs. used      1998-10-12  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51029  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 13:12:31  

Additional Information
 Earth MOID = 1.86022 au 
 Jupiter MOID = 1.85101 au 
 T_jup = 3.187 
[ 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 15.3   n/a MPO413104  

227965 (2007 HC22)          Discovered 2007-Apr-18 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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