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295021 (2008 EH68)
Classification: Jupiter Trojan          SPK-ID: 2295021
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0749266144752056 6.2145e-08  
a 5.250382562643231 1.9614e-07 au
q 4.856989172524719 4.4682e-07 au
i 28.32945822787101 6.2e-06 deg
node 129.0971844576632 1.3159e-05 deg
peri 208.4558218322598 6.159e-05 deg
M 265.9924031211291 6.7742e-05 deg
tp 2460147.980464042983
(2023-Jul-22.48046404)
0.00086652 TDB
period 4394.250898549674
12.03
0.00024623
6.741e-07
d
yr
n .08192522646324503 4.5907e-09 deg/d
Q 5.643775952761742 2.1083e-07 au
  Orbit Determination Parameters
   # obs. used (total)      326  
   data-arc span      7999 days (21.90 yr)  
   first obs. used      1998-07-20  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4775  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 05:17:30  

Additional Information
 Earth MOID = 3.86364 au 
 Jupiter MOID = .187343 au 
 T_jup = 2.754 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7   n/a MPO437319  
diameter diameter 14.261 km 0.864 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.087   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

295021 (2008 EH68)          Discovered 2008-Mar-10 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

Alternate Designations
 2008 EH68 = 1998 OZ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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