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295877 (2008 WF42)
Classification: Main-belt Asteroid          SPK-ID: 2295877
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05760208711793639 6.2813e-08  
a 2.700142356537034 3.9487e-08 au
q 2.544608521284958 1.7987e-07 au
i 3.588761819194198 8.1419e-06 deg
node 36.72469854649874 0.00011515 deg
peri 19.8778613402366 0.00014555 deg
M 223.5781675391981 9.4629e-05 deg
tp 2459614.629270718340
(2022-Feb-04.12927072)
0.0004346 TDB
period 1620.609644883104
4.44
3.555e-05
9.733e-08
d
yr
n .2221386261254586 4.8728e-09 deg/d
Q 2.85567619178911 4.1762e-08 au
  Orbit Determination Parameters
   # obs. used (total)      114  
   data-arc span      5687 days (15.57 yr)  
   first obs. used      2003-09-29  
   last obs. used      2019-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59225  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:35:02  

Additional Information
 Earth MOID = 1.5564 au 
 Jupiter MOID = 2.33669 au 
 T_jup = 3.363 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456892.5 (2014-Aug-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05958531731411935 6.2424e-08  
q 2.536456667140618 1.7849e-07 au
tp 2456380.704927846159
(2013-Mar-29.20492785)
0.00037975 TDB
node 36.77581292777816 0.00011499 deg
peri 20.62105482936771 0.00014374 deg
i 3.59258491827401 8.1491e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      114  
   data-arc span      5687 days (15.57 yr)  
   first obs. used      2003-09-29  
   last obs. used      2019-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59225  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:35:02  

Additional Information
 Jupiter MOID = 2.33669 au 
 T_jup = 3.363 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.896801126985439E-15 -1.090755798172765E-14 -9.420763612181856E-12 -2.561890905993821E-15 -2.105006658858051E-12 -1.930410912147649E-15
q -1.090755798172765E-14 3.185782904373985E-14 3.270915161801105E-11 6.706942899209755E-15 7.401036779039318E-12 7.061106252777307E-15
tp -9.420763612181856E-12 3.270915161801105E-11 1.442112567706055E-7 7.92859181657093E-11 3.279849994229687E-8 1.484930247463684E-11
node -2.561890905993821E-15 6.706942899209755E-15 7.92859181657093E-11 1.322306648188768E-8 -1.317890844504845E-8 -3.387458696191098E-10
peri -2.105006658858051E-12 7.401036779039318E-12 3.279849994229687E-8 -1.317890844504845E-8 2.066023938561498E-8 3.415476345221658E-10
i -1.930410912147649E-15 7.061106252777307E-15 1.484930247463684E-11 -3.387458696191098E-10 3.415476345221658E-10 6.640852410854072E-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 17.0   n/a MPO433907  

295877 (2008 WF42)          Discovered 2008-Nov-17 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

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