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442455 (2011 UP243)
Classification: Main-belt Asteroid          SPK-ID: 2442455
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2053449415857082 7.4786e-08  
a 2.611631171353241 1.9672e-08 au
q 2.075345921028295 2.043e-07 au
i .3700022830888851 6.1581e-06 deg
node 67.3343049886327 0.0012764 deg
peri 335.8574433452686 0.0012767 deg
M 109.3855985433142 2.6491e-05 deg
tp 2458928.092501417287
(2020-Mar-19.59250142)
0.00011005 TDB
period 1541.580443270183
4.22
1.7418e-05
4.769e-08
d
yr
n .2335265743488062 2.6385e-09 deg/d
Q 3.147916421678187 2.3712e-08 au
  Orbit Determination Parameters
   # obs. used (total)      115  
   data-arc span      9606 days (26.30 yr)  
   first obs. used      1994-10-26  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57932  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:44:17  

Additional Information
 Earth MOID = 1.08363 au 
 Jupiter MOID = 2.26056 au 
 T_jup = 3.379 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457316.5 (2015-Oct-21.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2048659462043552 7.6131e-08  
q 2.076733051155921 2.084e-07 au
tp 2457380.940430750109
(2015-Dec-24.44043075)
9.989e-05 TDB
node 66.93453113092878 0.0012575 deg
peri 335.314199945545 0.0012578 deg
i .3747971816025875 6.201e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      115  
   data-arc span      9606 days (26.30 yr)  
   first obs. used      1994-10-26  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57932  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:44:17  

Additional Information
 Jupiter MOID = 2.26056 au 
 T_jup = 3.379 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.795969464856914E-15 -1.583340297507083E-14 -4.431497486290597E-12 -1.265900560637194E-13 -1.056990777487777E-12 -1.4592575856922E-15
q -1.583340297507083E-14 4.343110418867296E-14 1.250227807990756E-11 3.2649753567459E-13 3.024106678219774E-12 4.092909622296543E-15
tp -4.431497486290597E-12 1.250227807990756E-11 9.978011212459316E-9 6.714779782113074E-11 2.899025334254256E-9 2.053368035901326E-12
node -1.265900560637194E-13 3.2649753567459E-13 6.714779782113074E-11 1.581310873600029E-6 -1.581257266974937E-6 -4.368493389900061E-9
peri -1.056990777487777E-12 3.024106678219774E-12 2.899025334254256E-9 -1.581257266974937E-6 1.582107649414601E-6 4.368992041855057E-9
i -1.4592575856922E-15 4.092909622296543E-15 2.053368035901326E-12 -4.368493389900061E-9 4.368992041855057E-9 3.845211075681617E-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 18.15   n/a MPCxxxxx  

442455 (2011 UP243)          Discovered 1994-Oct-26 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 UP243 = 1994 UK4 = 2011 WM79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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