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72248 (2001 AL28)
Classification: Main-belt Asteroid          SPK-ID: 2072248
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2421219569377615 5.6771e-08  
a 2.30585063845644 7.7375e-09 au
q 1.74755356946718 1.3134e-07 au
i 24.9591857302239 8.0276e-06 deg
node 24.93954647587465 8.1221e-06 deg
peri 31.85122403714136 1.742e-05 deg
M 303.2470350034588 1.3403e-05 deg
tp 2459402.118899756403
(2021-Jul-06.61889976)
4.7932e-05 TDB
period 1278.925319879385
3.50
6.4373e-06
1.762e-08
d
yr
n .2814863341934238 1.4168e-09 deg/d
Q 2.8641477074457 9.6109e-09 au
  Orbit Determination Parameters
   # obs. used (total)      971  
   data-arc span      11227 days (30.74 yr)  
   first obs. used      1989-10-03  
   last obs. used      2020-06-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49147  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:01:01  

Additional Information
 Earth MOID = .782644 au 
 Jupiter MOID = 2.65686 au 
 T_jup = 3.428 
[ 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 15.25   n/a E2021B10  
diameter diameter 1.965 km 0.358 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.417   0.133 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

72248 (2001 AL28)          Discovered 2001-Jan-06 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 AL28 = 1989 TV2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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