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JPL Small-Body Database Browser
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305982 (2009 HM103)
Classification: Main-belt Asteroid          SPK-ID: 2305982
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1946399017895751 5.1841e-08  
a 2.633788661974285 2.0154e-08 au
q 2.121148295473114 1.3678e-07 au
i 6.658321141183592 1.065e-05 deg
node 197.6185025173324 4.128e-05 deg
peri 283.4883923016007 4.8952e-05 deg
M 300.0645888048123 2.457e-05 deg
tp 2459260.426644875539
(2021-Feb-14.92664488)
0.00010746 TDB
period 1561.240513566496
4.27
1.792e-05
4.906e-08
d
yr
n .2305858686549302 2.6466e-09 deg/d
Q 3.146429028475456 2.4076e-08 au
  Orbit Determination Parameters
   # obs. used (total)      208  
   data-arc span      7658 days (20.97 yr)  
   first obs. used      1998-10-14  
   last obs. used      2019-10-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64093  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 07:41:51  

Additional Information
 Earth MOID = 1.14852 au 
 Jupiter MOID = 1.9896 au 
 T_jup = 3.362 
[ 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 16.8   n/a MPO494624  

305982 (2009 HM103)          Discovered 2009-Apr-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2009 HM103 = 1998 UF12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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