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JPL Small-Body Database Browser
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312477 (2008 SD278)
Classification: Jupiter Trojan          SPK-ID: 2312477
[ 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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06834045883938435 1.5783e-07  
a 5.179310429520143 2.4996e-07 au
q 4.825353978295127 9.8752e-07 au
i 6.579892460621116 1.0305e-05 deg
node 269.7298413613204 0.00012366 deg
peri 102.9474789019973 0.00015961 deg
M 319.1089589561836 9.6369e-05 deg
tp 2459089.526063578146
(2020-Aug-28.02606358)		 0.0011579 TDB
period 4305.328952116632
11.79		 0.00031167
8.533e-07		 d
yr
n .08361730404433161 6.0531e-09 deg/d
Q 5.533266880745159 2.6704e-07 au
   Orbit Determination Parameters
   # obs. used (total)      124  
   data-arc span      8390 days (22.97 yr)  
   first obs. used      1996-10-12  
   last obs. used      2019-10-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55795  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 08:11:19  

Additional Information
 Earth MOID = 3.83289 au 
 Jupiter MOID = .0221293 au 
 T_jup = 2.982 
[ 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 13.9   n/a MPO455303  

312477 (2008 SD278)          Discovered 2008-Sep-28 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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