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JPL Small-Body Database Browser
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441320 (2008 AF138)
Classification: Main-belt Asteroid          SPK-ID: 2441320
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1288636365085439 1.054e-07  
a 2.763034044632679 8.2162e-08 au
q 2.406979429844401 3.1976e-07 au
i 14.04235020485388 1.124e-05 deg
node 140.9560397418049 4.4919e-05 deg
peri 293.4342263932025 7.1589e-05 deg
M 200.4864711137552 7.0456e-05 deg
tp 2459343.814839624728
(2021-May-09.31483962)
0.00035351 TDB
period 1677.558913863245
4.59
7.4826e-05
2.049e-07
d
yr
n .2145975303907254 9.572e-09 deg/d
Q 3.119088659420957 9.275e-08 au
  Orbit Determination Parameters
   # obs. used (total)      70  
   data-arc span      3740 days (10.24 yr)  
   first obs. used      2008-01-15  
   last obs. used      2018-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55706  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:32:00  

Additional Information
 Earth MOID = 1.46123 au 
 Jupiter MOID = 2.1597 au 
 T_jup = 3.285 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456862.5 (2014-Jul-24.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1295177479722795 1.0538e-07  
q 2.403529247851871 3.2005e-07 au
tp 2457661.853470467503
(2016-Sep-30.35347047)
0.00029729 TDB
node 141.1558749513487 4.4936e-05 deg
peri 292.3411075302786 7.1428e-05 deg
i 14.04080374796523 1.1243e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      70  
   data-arc span      3740 days (10.24 yr)  
   first obs. used      2008-01-15  
   last obs. used      2018-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55706  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:32:00  

Additional Information
 Jupiter MOID = 2.1597 au 
 T_jup = 3.285 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.110500305083163E-14 -3.296536053511932E-14 -9.256444215603681E-12 2.356776453061785E-14 -1.427243130776323E-12 2.090453571177019E-14
q -3.296536053511932E-14 1.024299146922652E-13 4.008450127822615E-11 -8.284265190319279E-14 6.336590509600832E-12 -4.862488888331387E-14
tp -9.256444215603681E-12 4.008450127822615E-11 8.838150810566795E-8 -9.196386796268084E-11 1.655252174542385E-8 1.234640655356922E-11
node 2.356776453061785E-14 -8.284265190319279E-14 -9.196386796268084E-11 2.019265487541715E-9 -1.97249860675051E-9 3.767852998385479E-11
peri -1.427243130776323E-12 6.336590509600832E-12 1.655252174542385E-8 -1.97249860675051E-9 5.101908458188595E-9 -3.408883058651679E-11
i 2.090453571177019E-14 -4.862488888331387E-14 1.234640655356922E-11 3.767852998385479E-11 -3.408883058651679E-11 1.264112389980003E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8   n/a MPO446750  

441320 (2008 AF138)          Discovered 2008-Jan-15 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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