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120814 (1998 HW37)
Classification: Main-belt Asteroid          SPK-ID: 2120814
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1954654694366388 7.0009e-08  
a 2.598246799112094 1.4975e-08 au
q 2.090379268811404 1.7891e-07 au
i 3.100208288421882 4.8055e-06 deg
node 300.2330984522351 0.00013738 deg
peri 287.886155527747 0.00013815 deg
M 85.56851547660611 1.2645e-05 deg
tp 2458636.894432062561
(2019-Jun-02.39443206)
5.4641e-05 TDB
period 1529.744950328893
4.19
1.3225e-05
3.621e-08
d
yr
n .2353333475116884 2.0345e-09 deg/d
Q 3.106114329412783 1.7902e-08 au
  Orbit Determination Parameters
   # obs. used (total)      359  
   data-arc span      9107 days (24.93 yr)  
   first obs. used      1995-08-22  
   last obs. used      2020-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60828  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:11:00  

Additional Information
 Earth MOID = 1.08301 au 
 Jupiter MOID = 1.9029 au 
 T_jup = 3.387 
[ 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 16.3   n/a MPO432708  

120814 (1998 HW37)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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