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JPL Small-Body Database Browser
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312474 (2008 SP252)
Classification: Jupiter Trojan          SPK-ID: 2312474
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07281492468558672 1.0799e-07  
a 5.2901404686231 2.4485e-07 au
q 4.904939288824135 7.3649e-07 au
i 6.997994228088385 9.5594e-06 deg
node 181.392838402898 5.8859e-05 deg
peri 189.8432094420138 7.9507e-05 deg
M 313.708742940855 5.7031e-05 deg
tp 2459171.972986919148
(2020-Nov-18.47298692)
0.00071456 TDB
period 4444.257692722362
12.17
0.00030854
8.447e-07
d
yr
n .0810034036931552 5.6237e-09 deg/d
Q 5.675341648422066 2.6267e-07 au
  Orbit Determination Parameters
   # obs. used (total)      191  
   data-arc span      6388 days (17.49 yr)  
   first obs. used      2002-03-11  
   last obs. used      2019-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60327  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:01:59  

Additional Information
 Earth MOID = 3.90412 au 
 Jupiter MOID = .0509776 au 
 T_jup = 2.980 
[ 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 13.1   n/a MPO418615  
diameter diameter 13.779 km 1.088 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.059   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

312474 (2008 SP252)          Discovered 2008-Sep-19 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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