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146720 (2001 WC87)
Classification: Main-belt Asteroid          SPK-ID: 2146720
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .175229811383974 3.6113e-08  
a 2.660482224461935 1.2128e-08 au
q 2.194286426079055 9.6027e-08 au
i 3.134653303255371 4.7098e-06 deg
node 313.6815266482731 8.0568e-05 deg
peri 159.2832886626674 8.2065e-05 deg
M 44.85380713674678 1.4431e-05 deg
tp 2458803.014242638219
(2019-Nov-15.51424264)
6.347e-05 TDB
period 1585.035411453316
4.34
1.0838e-05
2.967e-08
d
yr
n .2271242632175118 1.553e-09 deg/d
Q 3.126678022844816 1.4253e-08 au
  Orbit Determination Parameters
   # obs. used (total)      680  
   data-arc span      6764 days (18.52 yr)  
   first obs. used      2001-10-14  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58152  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 11:32:15  

Additional Information
 Earth MOID = 1.21114 au 
 Jupiter MOID = 1.98247 au 
 T_jup = 3.362 
[ 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 15.9   n/a MPO453933  

146720 (2001 WC87)          Discovered 2001-Nov-19 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ 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
2009-Apr-26 19:48 < 00:01 Jupiter 1.98116199320169 1.98116164282718 1.98116234357609 2.3592181207943 2.17044549744163 2454948.325182033 0.207966734089878 58.9289783197278 11.9266164061945 83.0861095004818 2670054.82599521 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 11:32:28 2020-Aug-25 11:32
2139-Jun-16 02:23 00:02 Jupiter 1.99692529032143 1.99692469694809 1.99692588369477 2.32987336086705 2.1400895268 2502479.599606766 2.37688890896416 59.8581956787167 23.7531875792161 -88.4606299888637 2749422.11720297 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 11:32:28 2020-Aug-25 11:32
2187-Jun-23 04:19 00:03 Jupiter 1.97688285339204 1.97688245773765 1.97688324904677 2.37120604579969 2.18304620609896 2520018.679750964 3.29994355837704 150.68259152603 14.9817791086586 -89.1176529871507 2254045.28486292 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 11:32:28 2020-Aug-25 11:32

Alternate Designations
 2001 WC87 = 2003 FH79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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