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72215 (2001 AJ4)
Classification: Main-belt Asteroid          SPK-ID: 2072215
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1127219869426177 3.4842e-08  
a 2.358544646935281 1.0208e-08 au
q 2.092684808039861 8.4248e-08 au
i 7.290458851436762 3.2953e-06 deg
node 133.6895368669526 3.3795e-05 deg
peri 300.0786425724197 3.8926e-05 deg
M 213.5887042241281 2.1301e-05 deg
tp 2459738.567378819817
(2022-Jun-08.06737882)
8.0435e-05 TDB
period 1323.014425551282
3.62
8.5894e-06
2.352e-08
d
yr
n .2721058765855806 1.7666e-09 deg/d
Q 2.6244044858307 1.1359e-08 au
  Orbit Determination Parameters
   # obs. used (total)      932  
   data-arc span      8172 days (22.37 yr)  
   first obs. used      1998-03-04  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57358  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:00:51  

Additional Information
 Earth MOID = 1.11841 au 
 Jupiter MOID = 2.59354 au 
 T_jup = 3.533 
[ 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 15.66   n/a MPCxxxxx  
diameter diameter 2.297 km 0.433 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.211   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72215 (2001 AJ4)          Discovered 2001-Jan-02 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 AJ4 = 1998 HT104 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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