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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1043294620003936 3.6262e-08  
a 2.400226660705437 9.9493e-09 au
q 2.149812304515037 8.5833e-08 au
i 6.467260937677027 4.9487e-06 deg
node 159.1748693882251 3.0966e-05 deg
peri 310.7107540983513 3.7787e-05 deg
M 167.3876870287319 2.1656e-05 deg
tp 2458764.964428343857
(2019-Oct-08.46442834)
8.1053e-05 TDB
period 1358.240918623761
3.72
8.4452e-06
2.312e-08
d
yr
n .2650487075332484 1.648e-09 deg/d
Q 2.650641016895836 1.0987e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56493  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:10:14  

Additional Information
 Earth MOID = 1.17297 au 
 Jupiter MOID = 2.43659 au 
 T_jup = 3.510 
[ 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 15.93   n/a E2021B10  

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

Alternate Designations
 1998 HU138 = 2000 WN39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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