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100827 (1998 HU2)
Classification: Main-belt Asteroid          SPK-ID: 2100827
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2432828800519892 4.4405e-08  
a 2.608136834585888 1.2007e-08 au
q 1.973621793898155 1.1515e-07 au
i 5.013681010478422 4.6521e-06 deg
node 109.9247366921755 6.339e-05 deg
peri 249.107978122695 6.4203e-05 deg
M 341.1662341753723 1.2485e-05 deg
tp 2459080.987539518742
(2020-Aug-19.48753952)
5.3639e-05 TDB
period 1538.487549253563
4.21
1.0624e-05
2.909e-08
d
yr
n .2339960438254202 1.6159e-09 deg/d
Q 3.242651875273622 1.4929e-08 au
  Orbit Determination Parameters
   # obs. used (total)      349  
   data-arc span      8952 days (24.51 yr)  
   first obs. used      1996-01-27  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56065  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 09:04:26  

Additional Information
 Earth MOID = .976607 au 
 Jupiter MOID = 2.22155 au 
 T_jup = 3.363 
[ 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 16.0   n/a MPO436469  

100827 (1998 HU2)          Discovered 1998-Apr-20 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 HU2 = 1999 SF11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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