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442489 (2011 UA397)
Classification: Main-belt Asteroid          SPK-ID: 2442489
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .08314240000692015 1.3436e-07  
a 2.569280964668268 3.5789e-08 au
q 2.355664778973654 3.5971e-07 au
i 8.266026570394686 7.4577e-06 deg
node 238.4346956044004 9.4795e-05 deg
peri 67.29124079556799 0.00017015 deg
M 81.63752006023356 0.00012555 deg
tp 2458659.383184606420
(2019-Jun-24.88318461)
0.00052877 TDB
period 1504.235472256917
4.12
3.143e-05
8.605e-08
d
yr
n .2393242325683659 5.0005e-09 deg/d
Q 2.782897150362883 3.8765e-08 au
  Orbit Determination Parameters
   # obs. used (total)      77  
   data-arc span      5801 days (15.88 yr)  
   first obs. used      2003-10-18  
   last obs. used      2019-09-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .70555  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:17  

Additional Information
 Earth MOID = 1.35518 au 
 Jupiter MOID = 2.38227 au 
 T_jup = 3.411 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457153.5 (2015-May-11.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08412905660266895 1.364e-07  
q 2.353519034165487 3.6645e-07 au
tp 2457157.811600984472
(2015-May-15.31160098)
0.0005398 TDB
node 238.4568655588379 9.4833e-05 deg
peri 68.00976594363361 0.0001684 deg
i 8.263639156384507 7.4616e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      77  
   data-arc span      5801 days (15.88 yr)  
   first obs. used      2003-10-18  
   last obs. used      2019-09-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .70555  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:17  

Additional Information
 Jupiter MOID = 2.38227 au 
 T_jup = 3.411 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.860488906159142E-14 -4.981240838601435E-14 5.254680826537952E-11 4.393406197172722E-13 1.32184441900834E-11 -1.102568896801832E-13
q -4.981240838601435E-14 1.342840059238171E-13 -1.468382358213888E-10 -1.195097926060387E-12 -3.702263362625433E-11 3.00251118589852E-13
tp 5.254680826537952E-11 -1.468382358213888E-10 2.913834035558555E-7 1.640896926627099E-9 7.537167297782502E-8 -4.035774530534316E-10
node 4.393406197172722E-13 -1.195097926060387E-12 1.640896926627099E-9 8.993327934121109E-9 -8.474099400252651E-9 -2.086950608901353E-10
peri 1.32184441900834E-11 -3.702263362625433E-11 7.537167297782502E-8 -8.474099400252651E-9 2.835718990059239E-8 1.010650964699554E-10
i -1.102568896801832E-13 3.00251118589852E-13 -4.035774530534316E-10 -2.086950608901353E-10 1.010650964699554E-10 5.567544306816626E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.3   n/a MPO343066  

442489 (2011 UA397)          Discovered 2003-Oct-18 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 UA397 = 2003 UQ305 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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