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442548 (2011 YR42)
Classification: Main-belt Asteroid          SPK-ID: 2442548
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1156326469500965 6.3782e-08  
a 3.104214545883015 7.8882e-08 au
q 2.74526600124157 2.0565e-07 au
i 7.69031078381011 8.0622e-06 deg
node 308.4403859976546 4.6861e-05 deg
peri 49.27944440457294 5.7469e-05 deg
M 281.4665440867677 3.6502e-05 deg
tp 2459436.290972799895
(2021-Aug-09.79097280)
0.00021225 TDB
period 1997.680458393378
5.47
7.6146e-05
2.085e-07
d
yr
n .1802090011380137 6.869e-09 deg/d
Q 3.46316309052446 8.8004e-08 au
  Orbit Determination Parameters
   # obs. used (total)      129  
   data-arc span      4479 days (12.26 yr)  
   first obs. used      2007-01-25  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60156  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:41:35  

Additional Information
 Earth MOID = 1.74818 au 
 Jupiter MOID = 1.98789 au 
 T_jup = 3.197 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457391.5 (2016-Jan-04.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .116421520387758 6.3246e-08  
q 2.7405690303024 2.0326e-07 au
tp 2457447.537751152370
(2016-Feb-29.03775115)
0.00017714 TDB
node 308.4956464471877 4.6917e-05 deg
peri 50.33698684265242 5.754e-05 deg
i 7.687525135316704 8.0597e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      129  
   data-arc span      4479 days (12.26 yr)  
   first obs. used      2007-01-25  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60156  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:41:35  

Additional Information
 Jupiter MOID = 1.98789 au 
 T_jup = 3.197 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.000093914936243E-15 -1.205425860556093E-14 -2.539106789939325E-12 6.42400488612689E-15 -4.352953133926491E-13 1.695532797118723E-15
q -1.205425860556093E-14 4.131635727985944E-14 1.128881401449425E-11 -2.8970896805169E-14 1.952224200621046E-12 5.94712445884122E-16
tp -2.539106789939325E-12 1.128881401449425E-11 3.13795320983586E-8 -7.526374733720582E-11 5.940559901227338E-9 -4.807189988692682E-12
node 6.42400488612689E-15 -2.8970896805169E-14 -7.526374733720582E-11 2.201178762728706E-9 -2.194868068804369E-9 3.01100366258431E-11
peri -4.352953133926491E-13 1.952224200621046E-12 5.940559901227338E-9 -2.194868068804369E-9 3.310851921820545E-9 -3.082672464641258E-11
i 1.695532797118723E-15 5.94712445884122E-16 -4.807189988692682E-12 3.01100366258431E-11 -3.082672464641258E-11 6.495865495113421E-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 16.5   n/a MPO437721  

442548 (2011 YR42)          Discovered 2010-Jun-22 by WISE at WISE
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 YR42 = 2010 MF40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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