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120701 (1997 HR16)
Classification: Main-belt Asteroid          SPK-ID: 2120701
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0303718447637069 5.248e-08  
a 2.909026956622916 2.3264e-08 au
q 2.820674441482927 1.5442e-07 au
i 2.557850733344908 5.4656e-06 deg
node 42.67880842390067 0.00010276 deg
peri 332.5598664576324 0.00013276 deg
M 75.4276793346136 8.2941e-05 deg
tp 2458620.793273525018
(2019-May-17.29327352)		 0.00041859 TDB
period 1812.258082667338
4.96		 2.1739e-05
5.952e-08		 d
yr
n .1986472034215682 2.3829e-09 deg/d
Q 2.997379471762906 2.397e-08 au
   Orbit Determination Parameters
   # obs. used (total)      326  
   data-arc span      8741 days (23.93 yr)  
   first obs. used      1996-02-16  
   last obs. used      2020-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57445  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 06:22:17  

Additional Information
 Earth MOID = 1.82111 au 
 Jupiter MOID = 2.13392 au 
 T_jup = 3.282 
[ 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 16.1   n/a MPO453677  

120701 (1997 HR16)          Discovered 1997-Apr-30 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1997 HR16 = 2004 VF55 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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