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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1221082511551049 3.434e-08  
a 2.293196605527486 1.0173e-08 au
q 2.013178378471701 7.9867e-08 au
i 5.453850069021731 3.7074e-06 deg
node 234.9840827127709 4.4414e-05 deg
peri 335.8626577571744 4.7928e-05 deg
M 243.410196413205 1.8173e-05 deg
tp 2459611.288646695137
(2022-Jan-31.78864670)
6.5074e-05 TDB
period 1268.412058865485
3.47
8.4402e-06
2.311e-08
d
yr
n .2838194398135865 1.8886e-09 deg/d
Q 2.57321483258327 1.1415e-08 au
  Orbit Determination Parameters
   # obs. used (total)      450  
   data-arc span      7731 days (21.17 yr)  
   first obs. used      1999-11-10  
   last obs. used      2021-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53452  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:29:55  

Additional Information
 Earth MOID = 1.00746 au 
 Jupiter MOID = 2.39981 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 16.87   n/a MPCxxxxx  

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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