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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2431670934131223 4.3938e-08  
a 2.607765515194116 9.2659e-09 au
q 1.973642754561389 1.1368e-07 au
i 5.013675145142951 3.2657e-06 deg
node 109.9247999606335 5.9806e-05 deg
peri 249.1349198014539 6.0302e-05 deg
M 27.95542114832532 7.8796e-06 deg
tp 2459081.055880771310
(2020-Aug-19.55588077)
3.3637e-05 TDB
period 1538.159010167672
4.21
8.1981e-06
2.245e-08
d
yr
n .2340460236037346 1.2474e-09 deg/d
Q 3.241888275826843 1.1519e-08 au
  Orbit Determination Parameters
   # obs. used (total)      640  
   data-arc span      9117 days (24.96 yr)  
   first obs. used      1996-01-27  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47563  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:26:18  

Additional Information
 Earth MOID = .974996 au 
 Jupiter MOID = 2.22324 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 16.07   n/a E2021B55  

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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