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295336 (2008 HY8)
Classification: Jupiter Trojan          SPK-ID: 2295336
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .004567656931223446 5.8541e-08  
a 5.184585311586568 1.5174e-07 au
q 5.160903904552581 4.2617e-07 au
i 18.09472448258265 5.7679e-06 deg
node 174.6762014673754 1.7696e-05 deg
peri 125.8467638306644 0.00074257 deg
M 289.9720324084138 0.00074396 deg
tp 2459839.261496480354
(2022-Sep-16.76149648)
0.0089181 TDB
period 4311.907786528525
11.81
0.0001893
5.183e-07
d
yr
n .0834897260847576 3.6653e-09 deg/d
Q 5.208266718620556 1.5243e-07 au
  Orbit Determination Parameters
   # obs. used (total)      326  
   data-arc span      6858 days (18.78 yr)  
   first obs. used      2001-10-11  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52472  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:49:47  

Additional Information
 Earth MOID = 4.16194 au 
 Jupiter MOID = .210008 au 
 T_jup = 2.901 
[ 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 13.0   n/a MPO437320  
diameter diameter 13.002 km 0.958 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.060   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

295336 (2008 HY8)          Discovered 2008-Apr-24 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

Alternate Designations
 2008 HY8 = 2007 EC70 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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