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103291 (2000 AL44)
Classification: Main-belt Asteroid          SPK-ID: 2103291
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03756342590499612 3.8634e-08  
a 2.697380250602895 1.6661e-08 au
q 2.596057407421773 1.0362e-07 au
i 2.059990152563631 3.8104e-06 deg
node 68.71149623586771 0.00011931 deg
peri 97.45865788649867 0.00013097 deg
M 211.0387551415142 5.6278e-05 deg
tp 2459870.049174973567
(2022-Oct-17.54917497)
0.00025515 TDB
period 1618.123581200409
4.43
1.4992e-05
4.105e-08
d
yr
n .2224799169745324 2.0613e-09 deg/d
Q 2.798703093784017 1.7287e-08 au
  Orbit Determination Parameters
   # obs. used (total)      559  
   data-arc span      8069 days (22.09 yr)  
   first obs. used      1998-09-18  
   last obs. used      2020-10-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4748  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:46:03  

Additional Information
 Earth MOID = 1.60282 au 
 Jupiter MOID = 2.16314 au 
 T_jup = 3.367 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457473.5 (2016-Mar-26.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03532600335410491 3.8593e-08  
q 2.60379043288552 1.0331e-07 au
tp 2458247.441575078888
(2018-May-08.94157508)
0.00026626 TDB
node 68.74246061648428 0.00011911 deg
peri 96.65477609818454 0.00013229 deg
i 2.061965743173214 3.8122e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      559  
   data-arc span      8069 days (22.09 yr)  
   first obs. used      1998-09-18  
   last obs. used      2020-10-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4748  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:46:03  

Additional Information
 Jupiter MOID = 2.16314 au 
 T_jup = 3.367 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.489382013371663E-15 -3.938762394456978E-15 1.148775706378126E-12 5.356546881662199E-15 2.501465329408058E-13 2.209981348302556E-16
q -3.938762394456978E-15 1.067324205133708E-14 -1.762189318443735E-12 -1.384057684098049E-14 -4.088282088885454E-13 -4.691993272387028E-16
tp 1.148775706378126E-12 -1.762189318443735E-12 7.089404829247135E-8 7.481978709049293E-11 1.534122347058331E-8 8.965840856095765E-13
node 5.356546881662199E-15 -1.384057684098049E-14 7.481978709049293E-11 1.418801918276424E-8 -1.416225089319885E-8 -4.686199321441665E-11
peri 2.501465329408058E-13 -4.088282088885454E-13 1.534122347058331E-8 -1.416225089319885E-8 1.7499532494713E-8 4.702029610490769E-11
i 2.209981348302556E-16 -4.691993272387028E-16 8.965840856095765E-13 -4.686199321441665E-11 4.702029610490769E-11 1.453288157138214E-11

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 16.3   n/a MPO436485  

103291 (2000 AL44)          Discovered 2000-Jan-05 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2000 AL44 = 1998 SY28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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