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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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 
[ show covariance matrix ]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2043-Jul-01 09:17 < 00:01 Iris 0.0270790583877154 0.027077431865655 0.027080686499875 2.93818031500852 2.93818024275466 2467431.886760642 0.899025500412592 448.470900878996 54.4344049205022 -82.2556005466622 73675.2909204324 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 17:02:26 2020-Nov-11 17:02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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