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441303 (2008 AL4)
Classification: Main-belt Asteroid          SPK-ID: 2441303
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3540945447240999 4.8015e-08  
a 2.682546500725095 1.9652e-08 au
q 1.732671418849615 1.3025e-07 au
i 11.628453395436 9.2064e-06 deg
node 297.9961623181838 3.3156e-05 deg
peri 110.2977256248358 3.5665e-05 deg
M 333.5855550892451 1.3054e-05 deg
tp 2459118.249291647523
(2020-Sep-25.74929165)
5.883e-05 TDB
period 1604.794086581351
4.39
1.7635e-05
4.828e-08
d
yr
n .22432784555363 2.4651e-09 deg/d
Q 3.632421582600574 2.6611e-08 au
  Orbit Determination Parameters
   # obs. used (total)      115  
   data-arc span      6586 days (18.03 yr)  
   first obs. used      2002-07-21  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59831  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-26 00:50:17  

Additional Information
 Earth MOID = .783213 au 
 Jupiter MOID = 1.95479 au 
 T_jup = 3.255 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457170.5 (2015-May-28.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3559982028946418 4.8111e-08  
q 1.727557033548282 1.3061e-07 au
tp 2457506.700452939676
(2016-Apr-28.20045294)
4.9581e-05 TDB
node 298.6592329616826 3.3283e-05 deg
peri 108.8970988739839 3.5481e-05 deg
i 11.57647376152599 9.2073e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      115  
   data-arc span      6586 days (18.03 yr)  
   first obs. used      2002-07-21  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59831  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-26 00:50:17  

Additional Information
 Jupiter MOID = 1.95479 au 
 T_jup = 3.255 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.314709111565348E-15 -6.25450999354997E-15 -3.070251592196229E-13 -4.994705907875671E-14 5.696006895106516E-14 -3.171303637293704E-14
q -6.25450999354997E-15 1.705781655975574E-14 1.070682900844978E-12 1.458029334632413E-13 -1.269459270854979E-13 9.044160795873207E-14
tp -3.070251592196229E-13 1.070682900844978E-12 2.458255101075023E-9 6.233436916153838E-11 6.177328812106283E-10 3.723988902499604E-11
node -4.994705907875671E-14 1.458029334632413E-13 6.233436916153838E-11 1.107747325486865E-9 -1.071331673001395E-9 1.313312397757775E-10
peri 5.696006895106516E-14 -1.269459270854979E-13 6.177328812106283E-10 -1.071331673001395E-9 1.258867294380294E-9 -1.204729306221034E-10
i -3.171303637293704E-14 9.044160795873207E-14 3.723988902499604E-11 1.313312397757775E-10 -1.204729306221034E-10 8.477464433423917E-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 17.1   n/a MPO402740  

441303 (2008 AL4)          Discovered 2008-Jan-09 by LUSS at Lulin
Reference: Last Updated: 2015-09-02

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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