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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 
[ 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2083-Jul-24 23:26 < 00:01 Pallas 0.0383942822703334 0.0383933222761072 0.0383952459885578 10.3149677913985 10.3149675500324 2482065.476155774 0.817654465759182 818.610818726518 32.801415608338 87.5505846003647 174849.173692476 T 21 CATAB v2.0f-lin.ifort 2020-May-20 15:39:22 2020-May-20 15:39

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