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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3540945273999851 4.8518e-08  
a 2.682546490903305 3.2219e-08 au
q 1.732671458978411 1.3473e-07 au
i 11.6284504291345 1.0362e-05 deg
node 297.9961638000068 3.3569e-05 deg
peri 110.2977112046542 3.827e-05 deg
M 333.5855677996835 2.3714e-05 deg
tp 2459118.249234340737
(2020-Sep-25.74923434)
0.00010747 TDB
period 1604.794077767739
4.39
2.8912e-05
7.916e-08
d
yr
n .2243278467856501 4.0414e-09 deg/d
Q 3.6324215228282 4.3627e-08 au
  Orbit Determination Parameters
   # obs. used (total)      105  
   data-arc span      5354 days (14.66 yr)  
   first obs. used      2002-07-21  
   last obs. used      2017-03-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61575  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:39:43  

Additional Information
 Earth MOID = .783213 au 
 Jupiter MOID = 1.95479 au 
 T_jup = 3.255 
[ 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 17.1   n/a MPO402740  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1900-Feb-12 20:08 02:25 Jupiter 1.96297991748941 1.96297875160085 1.96298108413282 1.72247676426043 1.45049287643556 2415063.338898527 145.386211749683 12527.8787836212 151.29318797857 -84.2710264666718 785187.925524784 T 11 CATAB v2.0e-lin.ifort 2017-Nov-26 19:25:34 2018-Dec-18 03:18
2018-Oct-31 21:04 00:08 Jupiter 1.95173759944945 1.9517364640213 1.95173873494239 1.98916589439669 1.75750201685324 2458423.377889598 7.83763091994215 1369.6187443249 71.7589383480511 -88.7999162352089 1205545.2001278 T 11 CATAB v2.0e-lin.ifort 2017-Nov-26 19:25:34 2018-Dec-18 03:18
2137-Jul-12 04:08 01:30 Jupiter 1.94042595899317 1.94042468099347 1.94042725351654 2.2092877000381 2.00198020485716 2501775.672491088 90.3610869893524 18431.1361791174 53.8036488975954 -88.668693381018 1017392.20295711 T 11 CATAB v2.0e-lin.ifort 2017-Nov-26 19:25:34 2018-Dec-18 03:18
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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