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JPL Small-Body Database Browser
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172931 (2005 HA4)
Classification: Main-belt Asteroid          SPK-ID: 2172931
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1402654922103734 3.6055e-08  
a 2.619113776561083 2.1474e-08 au
q 2.251742493536772 9.8063e-08 au
i 2.868276755918593 4.8729e-06 deg
node 296.3600494777947 8.4225e-05 deg
peri 284.4191837062696 8.712e-05 deg
M 204.5448752936813 2.6816e-05 deg
tp 2459669.047881635470
(2022-Mar-30.54788164)
0.00012095 TDB
period 1548.210378033208
4.24
1.9041e-05
5.213e-08
d
yr
n .2325265384523073 2.8597e-09 deg/d
Q 2.986485059585393 2.4486e-08 au
  Orbit Determination Parameters
   # obs. used (total)      481  
   data-arc span      7227 days (19.79 yr)  
   first obs. used      2000-02-03  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57921  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 13:01:23  

Additional Information
 Earth MOID = 1.24563 au 
 Jupiter MOID = 2.00511 au 
 T_jup = 3.390 
[ 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 15.7   n/a MPO493967  

172931 (2005 HA4)          Discovered 2005-Apr-28 by Broughton, J. at Reedy Creek
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

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