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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3540945482509179 4.6968e-08  
a 2.682546499481292 1.7414e-08 au
q 1.732671408585382 1.2613e-07 au
i 11.62845423791326 8.4555e-06 deg
node 297.9961644788482 3.1928e-05 deg
peri 110.2977233318987 3.4499e-05 deg
M 333.585555803608 1.1117e-05 deg
tp 2459118.249288381170
(2020-Sep-25.74928838)
4.9935e-05 TDB
period 1604.79408546522
4.39
1.5627e-05
4.278e-08
d
yr
n .2243278457096495 2.1844e-09 deg/d
Q 3.632421590377201 2.3581e-08 au
  Orbit Determination Parameters
   # obs. used (total)      144  
   data-arc span      6670 days (18.26 yr)  
   first obs. used      2002-07-21  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55727  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:57:23  

Additional Information
 Earth MOID = .783213 au 
 Jupiter MOID = 1.95479 au 
 T_jup = 3.255 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457287.5 (2015-Sep-22.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3559727922950917 4.6946e-08  
q 1.727703686091893 1.2598e-07 au
tp 2457506.694160030775
(2016-Apr-28.19416003)
4.4258e-05 TDB
node 298.6591143864603 3.2072e-05 deg
peri 108.8884040095218 3.4353e-05 deg
i 11.57599181562618 8.4544e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      144  
   data-arc span      6670 days (18.26 yr)  
   first obs. used      2002-07-21  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55727  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:57:23  

Additional Information
 Jupiter MOID = 1.95479 au 
 T_jup = 3.255 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.203894554831088E-15 -5.891976655475373E-15 -7.995125846802497E-14 -4.401280261329072E-14 9.244277158823917E-14 -2.817992084993675E-14
q -5.891976655475373E-15 1.587001359160818E-14 3.191741095923382E-13 1.231873216623293E-13 -2.420149790884918E-13 7.763747778032377E-14
tp -7.995125846802497E-14 3.191741095923382E-13 1.958780029235551E-9 3.00411134655846E-11 5.569278428011703E-10 2.206084261408357E-11
node -4.401280261329072E-14 1.231873216623293E-13 3.00411134655846E-11 1.028614924255131E-9 -1.001131846680253E-9 9.930792893832361E-11
peri 9.244277158823917E-14 -2.420149790884918E-13 5.569278428011703E-10 -1.001131846680253E-9 1.180099848989817E-9 -9.244014808429093E-11
i -2.817992084993675E-14 7.763747778032377E-14 2.206084261408357E-11 9.930792893832361E-11 -9.244014808429093E-11 7.147659469738266E-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

[ 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 20:07 00:03 Jupiter 1.96297995320814 1.96297896982277 1.96298093659329 1.72247548965488 1.45049136823983 2415063.338438717 3.11407892408729 1305.32450021551 129.03213044846 79.5905148969756 1046302.06517317 T 13 CATAB v2.0f-lin.ifort 2020-Nov-12 08:57:24 2020-Nov-12 08:57
2018-Oct-31 21:04 < 00:01 Jupiter 1.95173757619765 1.95173662554825 1.95173852684771 1.98916644774786 1.75750264020218 2458423.377874691 0.414718539088425 545.052191998903 67.7775780972242 86.9939046685447 1115488.80919063 T 13 CATAB v2.0f-lin.ifort 2020-Nov-12 08:57:24 2020-Nov-12 08:57
2137-Jul-12 04:09 00:03 Jupiter 1.94042588500002 1.94042490923671 1.94042686078616 2.20928953650837 2.00198222318156 2501775.672884036 3.26700683865741 1196.44102540918 50.5934817457802 85.6531946287121 1111601.3571604 T 13 CATAB v2.0f-lin.ifort 2020-Nov-12 08:57:24 2020-Nov-12 08:57
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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