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344557 (2002 WU31)
Classification: Main-belt Asteroid          SPK-ID: 2344557
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1700557101787558 9.3636e-08  
a 2.267520466757682 1.3668e-08 au
q 1.88191566343834 2.0665e-07 au
i 6.329047303462234 9.2876e-06 deg
node 236.311610338565 4.8741e-05 deg
peri 130.4549481642416 5.4624e-05 deg
M 90.93812503306292 2.2729e-05 deg
tp 2458685.457790015784
(2019-Jul-20.95779002)
7.7888e-05 TDB
period 1247.168836536742
3.41
1.1277e-05
3.087e-08
d
yr
n .2886537808302544 2.61e-09 deg/d
Q 2.653125270077024 1.5993e-08 au
  Orbit Determination Parameters
   # obs. used (total)      155  
   data-arc span      6350 days (17.39 yr)  
   first obs. used      2002-08-13  
   last obs. used      2020-01-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58603  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 17:02:26  

Additional Information
 Earth MOID = .888506 au 
 Jupiter MOID = 2.83739 au 
 T_jup = 3.588 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457664.5 (2016-Oct-03.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1709522026445526 9.4024e-08  
q 1.879331168189761 2.0767e-07 au
tp 2457437.221739129494
(2016-Feb-18.72173913)
7.4545e-05 TDB
node 236.3387992356836 4.8787e-05 deg
peri 130.124636920476 5.4555e-05 deg
i 6.326198161310939 9.2871e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      155  
   data-arc span      6350 days (17.39 yr)  
   first obs. used      2002-08-13  
   last obs. used      2020-01-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58603  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 17:02:26  

Additional Information
 Jupiter MOID = 2.83739 au 
 T_jup = 3.588 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.840534452568498E-15 -1.950463521273761E-14 2.036980233139135E-12 -4.20217020258499E-14 2.635781210826928E-13 -2.165357029740171E-14
q -1.950463521273761E-14 4.31259382445585E-14 -4.487854975305401E-12 9.082147703298569E-14 -5.728683999043535E-13 4.819130869721125E-14
tp 2.036980233139135E-12 -4.487854975305401E-12 5.55693163578257E-9 5.210699278084951E-12 1.802332781156859E-9 -1.447701662440808E-11
node -4.20217020258499E-14 9.082147703298569E-14 5.210699278084951E-12 2.380194400911826E-9 -2.360825854864326E-9 -6.200965188466142E-11
peri 2.635781210826928E-13 -5.728683999043535E-13 1.802332781156859E-9 -2.360825854864326E-9 2.97619778757777E-9 5.778145301428039E-11
i -2.165357029740171E-14 4.819130869721125E-14 -1.447701662440808E-11 -6.200965188466142E-11 5.778145301428039E-11 8.624933310141465E-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 17.4   n/a MPO503388  

344557 (2002 WU31)          Discovered 2005-Jul-31 by NEAT at Palomar
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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