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249237 (2008 HJ10)
Classification: Jupiter Trojan          SPK-ID: 2249237
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1211168410407847 6.2619e-08  
a 5.231946688140619 1.7636e-07 au
q 4.598269832779232 4.4381e-07 au
i 14.20216926872407 8.1137e-06 deg
node 204.5850677622702 2.2141e-05 deg
peri 87.86248798694001 4.3092e-05 deg
M 288.7488041279894 4.0573e-05 deg
tp 2459865.633340187826
(2022-Oct-13.13334019)
0.00051723 TDB
period 4371.126668906378
11.97
0.00022102
6.051e-07
d
yr
n .08235862908316706 4.1643e-09 deg/d
Q 5.865623543502006 1.9772e-07 au
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      7178 days (19.65 yr)  
   first obs. used      2000-09-24  
   last obs. used      2020-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51938  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:19:20  

Additional Information
 Earth MOID = 3.62165 au 
 Jupiter MOID = .245711 au 
 T_jup = 2.924 
[ 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 MPO433633  
diameter diameter 13.364 km 0.719 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.068   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

249237 (2008 HJ10)          Discovered 2008-Apr-24 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

Alternate Designations
 2008 HJ10 = 2001 US172 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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