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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 ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1577948118185621 6.2116e-08  
a 3.963972758780989 8.0025e-08 au
q 3.338478423255236 2.8701e-07 au
i 9.570800065805539 8.4813e-06 deg
node 150.6044155988519 3.8748e-05 deg
peri 272.17238986286 4.8343e-05 deg
M 347.528921604465 2.8816e-05 deg
tp 2459100.361003807620
(2020-Sep-07.86100381)
0.00023184 TDB
period 2882.666617155929
7.89
8.7293e-05
2.39e-07
d
yr
n .1248843684724042 3.7818e-09 deg/d
Q 4.589467094306742 9.2652e-08 au
  Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      5340 days (14.62 yr)  
   first obs. used      2006-01-09  
   last obs. used      2020-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59631  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:49:33  

Additional Information
 Earth MOID = 2.37107 au 
 Jupiter MOID = .987326 au 
 T_jup = 3.012 
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Orbital Elements at Epoch 2457488.5 (2016-Apr-10.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1568689620301002 6.1846e-08  
q 3.339761808415289 2.855e-07 au
tp 2456224.357614468616
(2012-Oct-23.85761447)
0.00021831 TDB
node 150.6275023121811 3.8746e-05 deg
peri 272.5194894681909 4.85e-05 deg
i 9.57197200040685 8.4836e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      5340 days (14.62 yr)  
   first obs. used      2006-01-09  
   last obs. used      2020-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59631  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:49:33  

Additional Information
 Jupiter MOID = .987326 au 
 T_jup = 3.012 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.824871403852339E-15 -1.728941582493374E-14 -4.146143051981752E-12 4.892852916346032E-17 -6.378831981365358E-13 -1.193004294753286E-14
q -1.728941582493374E-14 8.151088603746753E-14 1.605088642221595E-11 1.83563398347243E-14 2.753791932887036E-12 6.188694064990063E-14
tp -4.146143051981752E-12 1.605088642221595E-11 4.765766245316932E-8 -5.651100112284268E-11 6.381876363063681E-9 2.149873571773674E-11
node 4.892852916346032E-17 1.83563398347243E-14 -5.651100112284268E-11 1.501256234637961E-9 -1.485402447225637E-9 1.370812631282542E-10
peri -6.378831981365358E-13 2.753791932887036E-12 6.381876363063681E-9 -1.485402447225637E-9 2.352288244316993E-9 -1.313051278671504E-10
i -1.193004294753286E-14 6.188694064990063E-14 2.149873571773674E-11 1.370812631282542E-10 -1.313051278671504E-10 7.19708971059049E-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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