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85242 (1993 QP4)
Classification: Main-belt Asteroid          SPK-ID: 2085242
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2306740653502636 4.5518e-08  
a 2.404369074900946 1.0748e-08 au
q 1.849743485791093 1.1283e-07 au
i 2.945752556207682 4.736e-06 deg
node 134.6722076744003 7.8205e-05 deg
peri 216.3829376958908 7.8893e-05 deg
M 58.68855154180542 8.3944e-06 deg
tp 2458778.501000439660
(2019-Oct-22.00100044)
3.1821e-05 TDB
period 1361.758600990406
3.73
9.1313e-06
2.5e-08
d
yr
n .2643640361354591 1.7727e-09 deg/d
Q 2.9589946640108 1.3228e-08 au
  Orbit Determination Parameters
   # obs. used (total)      647  
   data-arc span      9955 days (27.26 yr)  
   first obs. used      1993-08-15  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51246  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:14:11  

Additional Information
 Earth MOID = .84486 au 
 Jupiter MOID = 2.47414 au 
 T_jup = 3.485 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457377.5 (2015-Dec-21.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2322490526430857 4.5568e-08  
q 1.845430257507785 1.1312e-07 au
tp 2457417.115540433467
(2016-Jan-29.61554043)
3.3194e-05 TDB
node 134.745750298481 7.8239e-05 deg
peri 216.3529879124386 7.891e-05 deg
i 2.94587353055448 4.7374e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      647  
   data-arc span      9955 days (27.26 yr)  
   first obs. used      1993-08-15  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51246  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:14:11  

Additional Information
 Jupiter MOID = 2.47414 au 
 T_jup = 3.485 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.076467436703951E-15 -5.142815538019656E-15 -7.925756107835947E-14 2.187160532519283E-14 -2.004033441499252E-14 -1.768248224454946E-15
q -5.142815538019656E-15 1.279602274230406E-14 9.610420328334482E-14 -5.507594093496306E-14 2.024439705001866E-14 4.568307663188197E-15
tp -7.925756107835947E-14 9.610420328334482E-14 1.101837137285032E-9 -6.485814959358647E-12 3.549340070980566E-10 -1.896110000573064E-14
node 2.187160532519283E-14 -5.507594093496306E-14 -6.485814959358647E-12 6.121292313718589E-9 -6.113725706483203E-9 5.492255933537175E-11
peri -2.004033441499252E-14 2.024439705001866E-14 3.549340070980566E-10 -6.113725706483203E-9 6.226859983089006E-9 -5.490096332003982E-11
i -1.768248224454946E-15 4.568307663188197E-15 -1.896110000573064E-14 5.492255933537175E-11 -5.490096332003982E-11 2.244250045399912E-11

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 16.0   n/a MPO493473  

85242 (1993 QP4)          Discovered 1993-Aug-18 by Elst, E. W. at Caussols
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1993 QP4 = 2001 XM172 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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