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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 ]

[ hide orbit diagram ]

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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457198.5 (2015-Jun-25.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02925755910233922 5.1722e-08  
q 2.82265214300816 1.5118e-07 au
tp 2456779.520068702244
(2014-May-02.02006870)		 0.00044924 TDB
node 42.72287776711764 0.0001029 deg
peri 326.8031208054624 0.00013598 deg
i 2.558455518286643 5.458e-06 deg
   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
 Jupiter MOID = 2.13392 au 
 T_jup = 3.282 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.675115000668991E-15 -7.733144809429143E-15 4.069424699536167E-12 9.535268973749086E-15 6.99856450089309E-13 7.541684964134178E-16
q -7.733144809429143E-15 2.285659971586674E-14 -1.440411603070294E-11 -2.699894570008228E-14 -2.526855622131239E-12 -1.69287697412458E-15
tp 4.069424699536167E-12 -1.440411603070294E-11 2.01816700166486E-7 1.923018859976457E-11 3.994565712460768E-8 -7.540974533396371E-12
node 9.535268973749086E-15 -2.699894570008228E-14 1.923018859976457E-11 1.058839129473742E-8 -1.057402827000832E-8 4.669585536070918E-11
peri 6.99856450089309E-13 -2.526855622131239E-12 3.994565712460768E-8 -1.057402827000832E-8 1.849089054430696E-8 -4.814961403193108E-11
i 7.541684964134178E-16 -1.69287697412458E-15 -7.540974533396371E-12 4.669585536070918E-11 -4.814961403193108E-11 2.978922939351785E-11

[ 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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