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295396 (2008 JW7)
Classification: Outer Main-belt Asteroid          SPK-ID: 2295396
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1577947490523106 6.2714e-08  
a 3.963972757412602 8.4901e-08 au
q 3.338478670906485 2.914e-07 au
i 9.570799509305029 8.9338e-06 deg
node 150.6044288496665 3.912e-05 deg
peri 272.1723634937614 4.9125e-05 deg
M 347.5289276586021 3.0587e-05 deg
tp 2459100.360955277970
(2020-Sep-07.86095528)
0.00024632 TDB
period 2882.666615663259
7.89
9.2613e-05
2.536e-07
d
yr
n .1248843685370705 4.0122e-09 deg/d
Q 4.58946684391872 9.8298e-08 au
  Orbit Determination Parameters
   # obs. used (total)      195  
   data-arc span      5043 days (13.81 yr)  
   first obs. used      2006-01-09  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60189  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 06:59:55  

Additional Information
 Earth MOID = 2.37107 au 
 Jupiter MOID = .987326 au 
 T_jup = 3.012 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457279.5 (2015-Sep-14.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1568224965475625 6.2427e-08  
q 3.340518373093331 2.9e-07 au
tp 2456225.067374155883
(2012-Oct-24.56737416)
0.00022464 TDB
node 150.6311470177894 3.9112e-05 deg
peri 272.614621913568 4.9269e-05 deg
i 9.572253039215907 8.9364e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      195  
   data-arc span      5043 days (13.81 yr)  
   first obs. used      2006-01-09  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60189  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 06:59:55  

Additional Information
 Jupiter MOID = .987326 au 
 T_jup = 3.012 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.89713361692735E-15 -1.768496257742749E-14 -4.357867055477923E-12 -2.97925940596315E-15 -6.659356846361862E-13 -1.115196720237137E-14
q -1.768496257742749E-14 8.410150317611647E-14 1.806917422992462E-11 3.390631137244994E-14 3.021458107729561E-12 5.918009030819854E-14
tp -4.357867055477923E-12 1.806917422992462E-11 5.046479172960488E-8 -4.355428344267171E-11 6.748339682087036E-9 1.916395427275816E-11
node -2.97925940596315E-15 3.390631137244994E-14 -4.355428344267171E-11 1.52974294494558E-9 -1.511621071338803E-9 1.258784680826457E-10
peri -6.659356846361862E-13 3.021458107729561E-12 6.748339682087036E-9 -1.511621071338803E-9 2.427388418850782E-9 -1.205882350956037E-10
i -1.115196720237137E-14 5.918009030819854E-14 1.916395427275816E-11 1.258784680826457E-10 -1.205882350956037E-10 7.985875720085767E-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 14.6   n/a MPO455183  
diameter diameter 7.546 km 0.814 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.045   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

295396 (2008 JW7)          Discovered 2008-May-05 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

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