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JPL Small-Body Database Browser
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442514 (2011 WR75)
Classification: Main-belt Asteroid          SPK-ID: 2442514
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1289219527248629 1.3433e-07  
a 2.779739313507161 7.159e-08 au
q 2.421369893143748 4.256e-07 au
i 11.66536542042212 7.4816e-06 deg
node 251.6188921328811 3.8415e-05 deg
peri 89.36433917574567 5.9066e-05 deg
M 278.5581030424191 3.6093e-05 deg
tp 2458983.456910489253
(2020-May-13.95691049)
0.00017112 TDB
period 1692.795636230549
4.63
6.5395e-05
1.79e-07
d
yr
n .2126659546462643 8.2155e-09 deg/d
Q 3.138108733870574 8.0819e-08 au
  Orbit Determination Parameters
   # obs. used (total)      203  
   data-arc span      7886 days (21.59 yr)  
   first obs. used      1997-12-01  
   last obs. used      2019-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41318  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:20  

Additional Information
 Earth MOID = 1.44711 au 
 Jupiter MOID = 2.28846 au 
 T_jup = 3.292 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457279.5 (2015-Sep-14.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1300394268819557 1.3531e-07  
q 2.416558479129175 4.2873e-07 au
tp 2457295.332287565723
(2015-Sep-29.83228757)
0.00017243 TDB
node 251.6387644225246 3.8458e-05 deg
peri 89.98621756113934 5.8636e-05 deg
i 11.66116242853579 7.479e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      203  
   data-arc span      7886 days (21.59 yr)  
   first obs. used      1997-12-01  
   last obs. used      2019-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41318  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:20  

Additional Information
 Jupiter MOID = 2.28846 au 
 T_jup = 3.292 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.830850451925295E-14 -5.78032779014405E-14 8.882077848022462E-12 9.49036726629326E-14 2.715333661855415E-12 -1.367920972776857E-13
q -5.78032779014405E-14 1.838131169139474E-13 -2.732870672651979E-11 -3.047513670263358E-13 -8.3950789718001E-12 4.366611382253042E-13
tp 8.882077848022462E-12 -2.732870672651979E-11 2.973213834207438E-8 -4.855562052243079E-11 7.67428559511834E-9 -5.679664661472938E-11
node 9.49036726629326E-14 -3.047513670263358E-13 -4.855562052243079E-11 1.479001384560944E-9 -1.456814424364247E-9 3.136060336795975E-11
peri 2.715333661855415E-12 -8.3950789718001E-12 7.67428559511834E-9 -1.456814424364247E-9 3.438122096241896E-9 -4.887360722551056E-11
i -1.367920972776857E-13 4.366611382253042E-13 -5.679664661472938E-11 3.136060336795975E-11 -4.887360722551056E-11 5.59353231580981E-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 16.7   n/a MPO283262  

442514 (2011 WR75)          Discovered 2006-Sep-16 by CSS at Catalina
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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