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22628 Michaelallen (1998 KV39)
Classification: Main-belt Asteroid          SPK-ID: 2022628
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1738778829360069 3.6637e-08  
a 2.421942143881027 1.1806e-08 au
q 2.0008199713095 8.9911e-08 au
i 3.239392655750416 4.2635e-06 deg
node 124.6680602513484 7.1763e-05 deg
peri 176.3824860616451 7.4103e-05 deg
M 313.551354475651 2.4031e-05 deg
tp 2459378.129309198374
(2021-Jun-12.62930920)
9.2897e-05 TDB
period 1376.715092324769
3.77
1.0066e-05
2.756e-08
d
yr
n .2614920124047537 1.9119e-09 deg/d
Q 2.843064316452553 1.3858e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1117  
   data-arc span      10461 days (28.64 yr)  
   first obs. used      1991-09-30  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55854  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:08:25  

Additional Information
 Earth MOID = .983321 au 
 Jupiter MOID = 2.37505 au 
 T_jup = 3.490 
[ 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 15.15   n/a E2021B10  
diameter diameter 5.631 km 0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22628 Michaelallen           Discovered 1998 May 22 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Michael Allen mentored a finalist in the 2006 Intel Science Talent Search (STS), a science competition for high school seniors. He teaches at the Appleton High School East, Appleton, Wisconsin.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060314/MPCPages.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 KV39 = 1999 VG192 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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