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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2020839071175373 4.1182e-08  
a 2.644248866648578 1.7797e-08 au
q 2.109888724285113 1.1021e-07 au
i 12.96945441245341 4.9708e-06 deg
node 195.0757790337638 2.2949e-05 deg
peri 125.1727875517444 2.6559e-05 deg
M 201.8749500605395 1.6137e-05 deg
tp 2459690.342730512870
(2022-Apr-20.84273051)
7.4116e-05 TDB
period 1570.550542622524
4.30
1.5856e-05
4.341e-08
d
yr
n .2292189841906442 2.3142e-09 deg/d
Q 3.178609009012042 2.1394e-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 = 1.12801 au 
 Jupiter MOID = 2.322 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 15.2   n/a MPO469247  

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

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