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216660 (2003 WO138)
Classification: Main-belt Asteroid          SPK-ID: 2216660
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2553004025032223 4.9163e-08  
a 2.268484894889771 8.8221e-09 au
q 1.689339788151932 1.0807e-07 au
i 6.467284728914565 4.5113e-06 deg
node 71.8778799787577 3.2478e-05 deg
peri 282.5707133807964 3.3627e-05 deg
M 104.8173194753034 9.7048e-06 deg
tp 2459033.143600940063
(2020-Jul-02.64360094)
3.2391e-05 TDB
period 1247.964595129699
3.42
7.28e-06
1.993e-08
d
yr
n .2884697221419056 1.6828e-09 deg/d
Q 2.847630001627609 1.1074e-08 au
  Orbit Determination Parameters
   # obs. used (total)      432  
   data-arc span      6266 days (17.16 yr)  
   first obs. used      2003-11-21  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4638  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:55:45  

Additional Information
 Earth MOID = .698822 au 
 Jupiter MOID = 2.62062 au 
 T_jup = 3.562 
[ 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 17.02   n/a E2021B55  

216660 (2003 WO138)          Discovered 2003-Nov-21 by LINEAR at Socorro
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

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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
2024-Nov-03 01:50 < 00:01 Amphi 0.0337280619971965 0.033726577267564 0.0337295467990102 4.3257536180798 4.32575357867765 2460617.576082454 0.865746462838936 145.655756193341 58.072383053941 -69.9162413085074 82427.0632861597 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 23:55:46 2021-Apr-13 23:55

Alternate Designations
 2003 WO138 = 2006 OA2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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