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85624 (1998 HU138)
Classification: Main-belt Asteroid          SPK-ID: 2085624
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1046879812009043 3.6464e-08  
a 2.399896478470064 1.0188e-08 au
q 2.148656161047873 8.6557e-08 au
i 6.46695104719471 4.9601e-06 deg
node 159.1792896656313 3.1374e-05 deg
peri 310.7333053064257 3.8095e-05 deg
M 62.35413686390306 2.1547e-05 deg
tp 2458765.293152703733
(2019-Oct-08.79315270)
8.1057e-05 TDB
period 1357.960662842153
3.72
8.6469e-06
2.367e-08
d
yr
n .2651034082581858 1.6881e-09 deg/d
Q 2.651136795892254 1.1254e-08 au
  Orbit Determination Parameters
   # obs. used (total)      818  
   data-arc span      8067 days (22.09 yr)  
   first obs. used      1998-03-25  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56113  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:39:00  

Additional Information
 Earth MOID = 1.17144 au 
 Jupiter MOID = 2.43717 au 
 T_jup = 3.510 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457062.5 (2015-Feb-09.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1040874871898276 3.665e-08  
q 2.150441923907721 8.6971e-08 au
tp 2457408.595194161085
(2016-Jan-21.09519416)
8.0648e-05 TDB
node 159.2031092057617 3.1356e-05 deg
peri 311.1378633605963 3.8111e-05 deg
i 6.467769571795639 4.9615e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      818  
   data-arc span      8067 days (22.09 yr)  
   first obs. used      1998-03-25  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56113  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:39:00  

Additional Information
 Jupiter MOID = 2.43717 au 
 T_jup = 3.510 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.343220634408854E-15 -3.170354306214735E-15 8.977264676950793E-13 -1.901486452721424E-15 2.38758517947473E-13 -6.087882650153746E-16
q -3.170354306214735E-15 7.563980357283991E-15 -2.137759592311033E-12 3.450116738977905E-15 -5.742535028400704E-13 1.603795637056223E-15
tp 8.977264676950793E-13 -2.137759592311033E-12 6.504132027153013E-9 -5.25664779225475E-12 1.7549682354668E-9 -1.34059113842273E-12
node -1.901486452721424E-15 3.450116738977905E-15 -5.25664779225475E-12 9.832054573207663E-10 -9.778094271294001E-10 6.11491924826936E-12
peri 2.38758517947473E-13 -5.742535028400704E-13 1.7549682354668E-9 -9.778094271294001E-10 1.452410692883933E-9 -6.420021540573099E-12
i -6.087882650153746E-16 1.603795637056223E-15 -1.34059113842273E-12 6.11491924826936E-12 -6.420021540573099E-12 2.461695940107236E-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 15.9   n/a MPO502666  

85624 (1998 HU138)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 HU138 = 2000 WN39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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