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249212 (2008 DL84)
Classification: Jupiter Trojan          SPK-ID: 2249212
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1685897542769118 7.349e-08  
a 5.238438611676922 2.4696e-07 au
q 4.355291533339622 5.1089e-07 au
i 25.60431189775761 1.2225e-05 deg
node 201.9003909607696 1.6672e-05 deg
peri 103.3845166260872 4.7194e-05 deg
M 262.3303843774876 5.1983e-05 deg
tp 2459788.614217715060
(2022-Jul-28.11421771)
0.00068719 TDB
period 4379.264888586639
11.99
0.00030968
8.479e-07
d
yr
n .08220557768456571 5.8132e-09 deg/d
Q 6.121585690014221 2.8859e-07 au
  Orbit Determination Parameters
   # obs. used (total)      162  
   data-arc span      6803 days (18.63 yr)  
   first obs. used      2000-09-24  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49744  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 08:40:47  

Additional Information
 Earth MOID = 3.45684 au 
 Jupiter MOID = .0208104 au 
 T_jup = 2.777 
[ 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 12.8   n/a MPO450107  
diameter diameter 13.357 km 0.344 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.068   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

249212 (2008 DL84)          Discovered 2008-Feb-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

Alternate Designations
 2008 DL84 = 2000 SV236 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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