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295340 (2008 HL12)
Classification: Jupiter Trojan          SPK-ID: 2295340
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02804848138281688 1.1842e-07  
a 5.269311589967567 2.9144e-07 au
q 5.121515401936101 8.409e-07 au
i 23.30325630332807 1.0007e-05 deg
node 230.5332393189183 2.0334e-05 deg
peri 1.666796021079493 0.00015976 deg
M 329.082958311356 0.00016357 deg
tp 2458979.923895297255
(2020-May-10.42389530)
0.0020145 TDB
period 4418.035971312969
12.10
0.00036653
1.004e-06
d
yr
n .08148417132353356 6.7601e-09 deg/d
Q 5.417107777999034 2.9961e-07 au
  Orbit Determination Parameters
   # obs. used (total)      184  
   data-arc span      6431 days (17.61 yr)  
   first obs. used      2001-10-14  
   last obs. used      2019-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56176  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:42:57  

Additional Information
 Earth MOID = 4.11099 au 
 Jupiter MOID = .274121 au 
 T_jup = 2.835 
[ 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 12.9   n/a MPO433904  
diameter diameter 11.319 km 1.241 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.095   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

295340 (2008 HL12)          Discovered 2008-Apr-24 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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