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139244 (2001 HM30)
Classification: Main-belt Asteroid          SPK-ID: 2139244
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 .1222897580735366 3.5886e-08  
a 2.292767633313592 1.0355e-08 au
q 2.012385634116838 8.2865e-08 au
i 5.45453454543806 3.741e-06 deg
node 234.9843370909247 4.5937e-05 deg
peri 335.9052593547395 4.9569e-05 deg
M 186.5968374669349 1.8311e-05 deg
tp 2459611.291526300373
(2022-Jan-31.79152630)
6.5858e-05 TDB
period 1268.056166081779
3.47
8.5904e-06
2.352e-08
d
yr
n .2838990966089297 1.9233e-09 deg/d
Q 2.573149632510346 1.1621e-08 au
  Orbit Determination Parameters
   # obs. used (total)      425  
   data-arc span      7287 days (19.95 yr)  
   first obs. used      1999-11-10  
   last obs. used      2019-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53421  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 15:29:27  

Additional Information
 Earth MOID = 1.00765 au 
 Jupiter MOID = 2.40103 au 
 T_jup = 3.581 
[ 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 MPO436696  

139244 (2001 HM30)          Discovered 2001-Apr-24 by Pravec, P. at Ondrejov
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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