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305312 (2008 AL43)
Classification: Main-belt Asteroid          SPK-ID: 2305312
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0623642192915526 5.8763e-08  
a 3.075420547002896 4.3458e-08 au
q 2.883624345595861 1.7403e-07 au
i 21.38604508904022 8.2208e-06 deg
node 312.4039332056 1.5379e-05 deg
peri 246.1674844491726 6.5383e-05 deg
M 48.5950500093966 6.2846e-05 deg
tp 2458734.583842323603
(2019-Sep-08.08384232)
0.00034423 TDB
period 1969.949958791936
5.39
4.1755e-05
1.143e-07
d
yr
n .1827457587911362 3.8735e-09 deg/d
Q 3.267216748409931 4.6168e-08 au
  Orbit Determination Parameters
   # obs. used (total)      206  
   data-arc span      5872 days (16.08 yr)  
   first obs. used      2003-03-09  
   last obs. used      2019-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61018  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:10:28  

Additional Information
 Earth MOID = 1.94881 au 
 Jupiter MOID = 1.88999 au 
 T_jup = 3.121 
[ 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 MPO471205  
diameter diameter 4.677 km 0.984 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.074   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

305312 (2008 AL43)          Discovered 2008-Jan-10 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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