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181742 (1995 WL15)
Classification: Main-belt Asteroid          SPK-ID: 2181742
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1553411299080124 6.5138e-08  
a 3.056339196992673 2.958e-08 au
q 2.581564012749684 1.9778e-07 au
i 3.29248107260632 7.2028e-06 deg
node 224.0118395471837 0.00011042 deg
peri 175.7439733589923 0.00011321 deg
M 249.2027305629266 2.8267e-05 deg
tp 2459801.158061828680
(2022-Aug-09.65806183)
0.00015986 TDB
period 1951.644687246874
5.34
2.8333e-05
7.757e-08
d
yr
n .1844598057999179 2.6778e-09 deg/d
Q 3.531114381235663 3.4175e-08 au
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      9006 days (24.66 yr)  
   first obs. used      1995-11-17  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5447  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:50  

Additional Information
 Earth MOID = 1.58854 au 
 Jupiter MOID = 1.88193 au 
 T_jup = 3.214 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456841.5 (2014-Jul-03.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1573133446007354 6.4922e-08  
q 2.572250442894707 1.9609e-07 au
tp 2455906.969108358210
(2011-Dec-11.46910836)
0.00012126 TDB
node 224.0640265502961 0.00011028 deg
peri 176.4259439063804 0.00011301 deg
i 3.29606319801937 7.2108e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      9006 days (24.66 yr)  
   first obs. used      1995-11-17  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5447  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:50  

Additional Information
 Jupiter MOID = 1.88193 au 
 T_jup = 3.214 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.214879878148319E-15 -1.26281682294984E-14 7.041465637591488E-13 -2.136047698707128E-14 7.131491716009053E-14 -1.640046889904556E-15
q -1.26281682294984E-14 3.845061498398699E-14 -6.456615807909924E-13 6.433013425854997E-14 1.258756546678315E-13 4.589036522278326E-15
tp 7.041465637591488E-13 -6.456615807909924E-13 1.47028809395851E-8 1.698508912286477E-11 3.022505322559027E-9 -5.142914182825098E-12
node -2.136047698707128E-14 6.433013425854997E-14 1.698508912286477E-11 1.216223195313842E-8 -1.213789997517587E-8 7.332282636585121E-11
peri 7.131491716009053E-14 1.258756546678315E-13 3.022505322559027E-9 -1.213789997517587E-8 1.277018046987688E-8 -7.423846338046378E-11
i -1.640046889904556E-15 4.589036522278326E-15 -5.142914182825098E-12 7.332282636585121E-11 -7.423846338046378E-11 5.199538341767793E-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 16.16   n/a E2021B55  

181742 (1995 WL15)          Discovered 1995-Nov-17 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 1995 WL15 = 2005 ND65 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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