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85231 (1993 FR52)
Classification: Main-belt Asteroid          SPK-ID: 2085231
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2130224718372649 5.8483e-08  
a 2.341248559125691 1.0429e-08 au
q 1.842510003875301 1.3808e-07 au
i 4.102965228243061 6.5642e-06 deg
node 153.6902811343156 6.6484e-05 deg
peri 4.829193352505826 6.7469e-05 deg
M 225.3654263274299 1.0815e-05 deg
tp 2459489.854752256259
(2021-Oct-02.35475226)
4.0361e-05 TDB
period 1308.487901782877
3.58
8.7428e-06
2.394e-08
d
yr
n .2751267317867311 1.8383e-09 deg/d
Q 2.83998711437608 1.265e-08 au
  Orbit Determination Parameters
   # obs. used (total)      361  
   data-arc span      10082 days (27.60 yr)  
   first obs. used      1993-03-17  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55004  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:01:38  

Additional Information
 Earth MOID = .851722 au 
 Jupiter MOID = 2.14547 au 
 T_jup = 3.530 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457233.5 (2015-Jul-30.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2122955572115101 5.8611e-08  
q 1.844887518665904 1.3834e-07 au
tp 2456871.615345949119
(2014-Aug-02.11534595)
3.8114e-05 TDB
node 153.7401641891951 6.6505e-05 deg
peri 4.79781127926426 6.7497e-05 deg
i 4.101504964437305 6.5625e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      361  
   data-arc span      10082 days (27.60 yr)  
   first obs. used      1993-03-17  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55004  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:01:38  

Additional Information
 Jupiter MOID = 2.14547 au 
 T_jup = 3.530 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.435211284674513E-15 -8.094216840303437E-15 2.506405527993638E-13 3.117187639866428E-14 8.503814946706761E-14 -2.271587653656386E-15
q -8.094216840303437E-15 1.913922185966889E-14 -6.144906592852116E-13 -7.4495684021995E-14 -2.019503180614019E-13 5.387692512454393E-15
tp 2.506405527993638E-13 -6.144906592852116E-13 1.452708424958432E-9 3.327069892733634E-12 4.54493767168223E-10 1.433929812055648E-12
node 3.117187639866428E-14 -7.4495684021995E-14 3.327069892733634E-12 4.422859554516395E-9 -4.409114165335764E-9 3.972733727263931E-11
peri 8.503814946706761E-14 -2.019503180614019E-13 4.54493767168223E-10 -4.409114165335764E-9 4.555813115679905E-9 -3.917188716401417E-11
i -2.271587653656386E-15 5.387692512454393E-15 1.433929812055648E-12 3.972733727263931E-11 -3.917188716401417E-11 4.30668225164011E-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 16.8   n/a MPO453282  

85231 (1993 FR52)          Discovered 1993-Mar-17 by UESAC at La Silla
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1993 FR52 = 1995 WM13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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