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504033 (2005 UN157)
Classification: Apollo [NEO]          SPK-ID: 2504033
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .85597370893876 3.8512e-07  
a 2.516833057444134 6.1684e-08 au
q .3624901304839994 9.6976e-07 au
i 44.47011270100649 0.00012762 deg
node 21.64972272951725 1.7672e-05 deg
peri 210.0227419681698 7.1885e-05 deg
M 322.921840944899 8.4548e-05 deg
tp 2459350.708913091430
(2021-May-16.20891309)
0.00034449 TDB
period 1458.411369144698
3.99
5.3616e-05
1.468e-07
d
yr
n .2468439341714171 9.0748e-09 deg/d
Q 4.671175984404268 1.1448e-07 au
  Orbit Determination Parameters
   # obs. used (total)      81  
   data-arc span      4373 days (11.97 yr)  
   first obs. used      2005-10-29  
   last obs. used      2017-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .65557  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Nov-11 06:21:27  

Additional Information
 Earth MOID = .419089 au 
 Jupiter MOID = 1.36685 au 
 T_jup = 2.581 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456535.5 (2013-Aug-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8557566580502267 3.8567e-07  
q .3630815066984052 9.7109e-07 au
tp 2456434.384329413812
(2013-May-21.88432941)
0.00031974 TDB
node 21.6817757256943 1.7682e-05 deg
peri 209.9911273233058 7.1845e-05 deg
i 44.49700506058763 0.00012764 deg
  Orbit Determination Parameters
   # obs. used (total)      81  
   data-arc span      4373 days (11.97 yr)  
   first obs. used      2005-10-29  
   last obs. used      2017-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .65557  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Nov-11 06:21:27  

Additional Information
 Jupiter MOID = 1.36685 au 
 T_jup = 2.581 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.487402977403524E-13 -3.745040406804907E-13 2.14339310770493E-11 -3.52177025325188E-13 -1.921816567970801E-11 2.122939749758793E-12
q -3.745040406804907E-13 9.430207107649753E-13 -5.367802029990116E-11 8.703418511098031E-13 4.845526087757019E-11 -5.287124593042088E-12
tp 2.14339310770493E-11 -5.367802029990116E-11 1.022367450700636E-7 3.200764469757636E-10 1.270469942479675E-8 -8.953824128330741E-9
node -3.52177025325188E-13 8.703418511098031E-13 3.200764469757636E-10 3.126583007089401E-10 -1.265990120793102E-10 -1.403541381352805E-9
peri -1.921816567970801E-11 4.845526087757019E-11 1.270469942479675E-8 -1.265990120793102E-10 5.161646490376601E-9 -6.491215176289496E-10
i 2.122939749758793E-12 -5.287124593042088E-12 -8.953824128330741E-9 -1.403541381352805E-9 -6.491215176289496E-10 1.629092275135516E-8

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 18.3   n/a MPO428210  

504033 (2005 UN157)          Discovered 2005-Oct-29 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2017-11-07

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