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46771 (1998 HM7)
Classification: Mars-crossing Asteroid          SPK-ID: 2046771
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2992075956097154 5.368e-08  
a 2.307538500133099 1.3343e-08 au
q 1.617105453731425 1.2665e-07 au
i 23.55559071789782 5.8166e-06 deg
node 56.48092385928037 1.1822e-05 deg
peri 280.5994077141323 1.4901e-05 deg
M 18.29305620663723 1.4126e-05 deg
tp 2458935.441262920648
(2020-Mar-26.94126292)
4.9898e-05 TDB
period 1280.32981935893
3.51
1.1105e-05
3.04e-08
d
yr
n .2811775485946696 2.4388e-09 deg/d
Q 2.997971546534772 1.7335e-08 au
  Orbit Determination Parameters
   # obs. used (total)      941  
   data-arc span      12842 days (35.16 yr)  
   first obs. used      1984-05-30  
   last obs. used      2019-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51358  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:34:33  

Additional Information
 Earth MOID = .776835 au 
 Jupiter MOID = 2.83886 au 
 T_jup = 3.420 
[ 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 14.6   n/a MPO385115  

46771 (1998 HM7)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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