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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1581070694688264 5.4454e-08  
a 3.965458568937838 6.8887e-08 au
q 3.33849153550303 2.4299e-07 au
i 9.570782375071538 7.5558e-06 deg
node 150.5996018365109 3.7212e-05 deg
peri 272.1617555297258 4.5588e-05 deg
M 12.50992551127697 2.4294e-05 deg
tp 2459100.271605211423
(2020-Sep-07.77160521)
0.00019429 TDB
period 2884.287527640477
7.90
7.5157e-05
2.058e-07
d
yr
n .1248141860165037 3.2523e-09 deg/d
Q 4.592425602372646 7.9778e-08 au
  Orbit Determination Parameters
   # obs. used (total)      251  
   data-arc span      5480 days (15.00 yr)  
   first obs. used      2006-01-09  
   last obs. used      2021-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57726  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 14:58:43  

Additional Information
 Earth MOID = 2.37046 au 
 Jupiter MOID = .985699 au 
 T_jup = 3.012 
[ 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 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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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