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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457256.5 (2015-Aug-22.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2949922302276811 4.0635e-08  
q 1.845207003525099 1.1183e-07 au
tp 2457755.832073764464
(2017-Jan-02.33207376)
5.5259e-05 TDB
node 211.9001901080056 2.327e-05 deg
peri 104.8038719781424 2.6037e-05 deg
i 9.818288830862128 6.1235e-06 deg
  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
 Jupiter MOID = 2.07519 au 
 T_jup = 3.324 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.651181130805282E-15 -4.525910260815319E-15 -6.790463148873457E-13 3.523589962572554E-15 -6.739658792676158E-14 -3.202821774310446E-15
q -4.525910260815319E-15 1.25052858537216E-14 2.167648806053141E-12 -8.369901829158134E-15 2.401790374315129E-13 9.950720574958826E-15
tp -6.790463148873457E-13 2.167648806053141E-12 3.053597725921072E-9 -8.947970731604582E-14 6.454101774715968E-10 7.898346591740669E-13
node 3.523589962572554E-15 -8.369901829158134E-15 -8.947970731604582E-14 5.414979670416797E-10 -5.328226370908141E-10 8.696176271435498E-12
peri -6.739658792676158E-14 2.401790374315129E-13 6.454101774715968E-10 -5.328226370908141E-10 6.779030055071785E-10 -8.304482559556798E-12
i -3.202821774310446E-15 9.950720574958826E-15 7.898346591740669E-13 8.696176271435498E-12 -8.304482559556798E-12 3.749717618014255E-11

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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