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JPL Small-Body Database Browser
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100846 (1998 HW25)
Classification: Main-belt Asteroid          SPK-ID: 2100846
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1358652035839376 3.9518e-08  
a 2.226298684475654 7.3233e-09 au
q 1.923822160470717 9.0243e-08 au
i 6.414794967108587 4.4185e-06 deg
node 40.97605742453597 2.688e-05 deg
peri 323.2821178119066 3.029e-05 deg
M 71.52595602790828 1.2253e-05 deg
tp 2458759.434677031823
(2019-Oct-02.93467703)
4.1671e-05 TDB
period 1213.315013009852
3.32
5.9867e-06
1.639e-08
d
yr
n .2967077767437769 1.464e-09 deg/d
Q 2.528775208480591 8.3182e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1119  
   data-arc span      7972 days (21.83 yr)  
   first obs. used      1998-03-29  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48758  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:12:10  

Additional Information
 Earth MOID = .926824 au 
 Jupiter MOID = 2.93355 au 
 T_jup = 3.625 
[ 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 15.6   n/a MPO439690  

100846 (1998 HW25)          Discovered 1998-Apr-20 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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