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JPL Small-Body Database Browser
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136854 (1998 DM28)
Classification: Main-belt Asteroid          SPK-ID: 2136854
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06311785510277973 3.5665e-08  
a 2.226848035466392 1.0724e-08 au
q 2.086294163827914 8.0966e-08 au
i 5.996861903969736 4.4663e-06 deg
node 150.2312780989466 4.4854e-05 deg
peri 304.8669550728264 6.5225e-05 deg
M 318.7890764324107 4.9993e-05 deg
tp 2459139.445390921063
(2020-Oct-16.94539092)
0.00016899 TDB
period 1213.764128570069
3.32
8.7675e-06
2.4e-08
d
yr
n .2965979892848823 2.1424e-09 deg/d
Q 2.367401907104869 1.14e-08 au
  Orbit Determination Parameters
   # obs. used (total)      452  
   data-arc span      7871 days (21.55 yr)  
   first obs. used      1998-02-26  
   last obs. used      2019-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60458  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 16:05:34  

Additional Information
 Earth MOID = 1.10961 au 
 Jupiter MOID = 2.71075 au 
 T_jup = 3.635 
[ 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 16.7   n/a MPO493781  

136854 (1998 DM28)          Discovered 1998-Feb-26 by Spacewatch at Kitt Peak
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

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