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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .004801773115479044 5.8104e-08  
a 5.184368355374763 1.5114e-07 au
q 5.159474194785184 4.2334e-07 au
i 18.09481505866045 5.7681e-06 deg
node 174.6763793992234 1.7696e-05 deg
peri 127.8781013216143 0.00071267 deg
M 304.6714646124204 0.00071439 deg
tp 2459863.157132423888
(2022-Oct-10.65713242)
0.0085625 TDB
period 4311.637132656724
11.80
0.00018854
5.162e-07
d
yr
n .08349496697514916 3.6511e-09 deg/d
Q 5.209262515964341 1.5186e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52476  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 05:14:05  

Additional Information
 Earth MOID = 4.15843 au 
 Jupiter MOID = .209378 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 13.15   n/a E2021B55  
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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