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85983 (1999 HX7)
Classification: Main-belt Asteroid          SPK-ID: 2085983
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .296155734445142 4.0603e-08  
a 2.614697836351803 1.5866e-08 au
q 1.840340078274911 1.1178e-07 au
i 9.825789104628228 6.1272e-06 deg
node 211.8702013758365 2.3259e-05 deg
peri 104.9407602297573 2.6011e-05 deg
M 289.9891731441805 1.4641e-05 deg
tp 2459300.826319773134
(2021-Mar-27.32631977)
6.485e-05 TDB
period 1544.296503467754
4.23
1.4056e-05
3.848e-08
d
yr
n .2331158551428508 2.1218e-09 deg/d
Q 3.389055594428694 2.0564e-08 au
  Orbit Determination Parameters
   # obs. used (total)      638  
   data-arc span      7683 days (21.03 yr)  
   first obs. used      1999-04-15  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55784  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:42:03  

Additional Information
 Earth MOID = .857294 au 
 Jupiter MOID = 2.07519 au 
 T_jup = 3.324 
[ 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 15.2   n/a MPO385352  

85983 (1999 HX7)          Discovered 1999-Apr-19 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 HX7 = 2000 VC18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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