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100826 (1998 HH2)
Classification: Main-belt Asteroid          SPK-ID: 2100826
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .154206793059417 4.9901e-08  
a 2.37290904601993 1.1626e-08 au
q 2.006990351811516 1.1531e-07 au
i 1.602215096866888 5.7935e-06 deg
node 186.5620928708267 0.00016915 deg
peri 273.3778070136322 0.0001702 deg
M 75.81836821955436 2.0329e-05 deg
tp 2458719.315098407336
(2019-Aug-23.81509841)
7.4838e-05 TDB
period 1335.119271892369
3.66
9.8122e-06
2.686e-08
d
yr
n .2696388312107456 1.9817e-09 deg/d
Q 2.738827740228344 1.3419e-08 au
  Orbit Determination Parameters
   # obs. used (total)      463  
   data-arc span      10605 days (29.03 yr)  
   first obs. used      1991-04-14  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52238  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 17:56:07  

Additional Information
 Earth MOID = 1.02462 au 
 Jupiter MOID = 2.4085 au 
 T_jup = 3.527 
[ 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 16.6   n/a MPO453462  

100826 (1998 HH2)          Discovered 1998-Apr-18 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 HH2 = 1998 DD32 = 2000 TW15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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