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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1046879846559196 3.6306e-08  
a 2.399896476955251 1.009e-08 au
q 2.148656151399964 8.6046e-08 au
i 6.46695096631337 4.9485e-06 deg
node 159.1792911278203 3.0972e-05 deg
peri 310.7333024936068 3.7729e-05 deg
M 62.35413908085093 2.1447e-05 deg
tp 2458765.293144563849
(2019-Oct-08.79314456)
8.0701e-05 TDB
period 1357.960661556438
3.72
8.5644e-06
2.345e-08
d
yr
n .2651034085091854 1.672e-09 deg/d
Q 2.651136802510538 1.1147e-08 au
  Orbit Determination Parameters
   # obs. used (total)      829  
   data-arc span      8093 days (22.16 yr)  
   first obs. used      1998-03-25  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56494  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:20  

Additional Information
 Earth MOID = 1.17144 au 
 Jupiter MOID = 2.43717 au 
 T_jup = 3.510 
[ 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 15.9   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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