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120271 (2004 HM3)
Classification: Main-belt Asteroid          SPK-ID: 2120271
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2022343846907531 4.1176e-08  
a 2.643757749746781 1.7802e-08 au
q 2.109099027955331 1.1016e-07 au
i 12.97138875371669 4.9715e-06 deg
node 195.0715398640019 2.2946e-05 deg
peri 125.2199617734769 2.6552e-05 deg
M 247.6772661323543 1.6364e-05 deg
tp 2459690.387184211500
(2022-Apr-20.88718421)		 7.4062e-05 TDB
period 1570.113014912469
4.30		 1.5859e-05
4.342e-08		 d
yr
n .2292828583553073 2.3159e-09 deg/d
Q 3.178416471538231 2.1402e-08 au
   Orbit Determination Parameters
   # obs. used (total)      643  
   data-arc span      9147 days (25.04 yr)  
   first obs. used      1995-04-08  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5404  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:36:00  

Additional Information
 Earth MOID = 1.12538 au 
 Jupiter MOID = 2.32239 au 
 T_jup = 3.329 
[ 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 15.21   n/a E2021B55  

120271 (2004 HM3)          Discovered 2004-Apr-16 by NEAT at Palomar
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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Alternate Designations
 2004 HM3 = 1995 GQ8 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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