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487466 (2014 SJ138)
Classification: Main-belt Asteroid          SPK-ID: 2487466
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0257742021768215 7.0588e-08  
a 2.923609300285438 5.7248e-08 au
q 2.848255603093846 2.176e-07 au
i 6.362851486273434 1.7651e-05 deg
node 25.24856520435379 0.00010567 deg
peri 251.1556601316876 0.00046725 deg
M 127.9631904135957 0.00045539 deg
tp 2458351.477149187640
(2018-Aug-20.97714919)
0.0023096 TDB
period 1825.90185144075
5.00
5.3631e-05
1.468e-07
d
yr
n .1971628429621985 5.7911e-09 deg/d
Q 2.99896299747703 5.8724e-08 au
  Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      4605 days (12.61 yr)  
   first obs. used      2007-02-23  
   last obs. used      2019-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64102  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 15:27:19  

Additional Information
 Earth MOID = 1.84042 au 
 Jupiter MOID = 2.01545 au 
 T_jup = 3.269 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457449.5 (2016-Mar-02.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02829776034861305 7.5952e-08  
q 2.839993867008325 2.3372e-07 au
tp 2458360.217755073025
(2018-Aug-29.71775507)
0.0021021 TDB
node 25.28335168044535 0.00010555 deg
peri 253.0735464520933 0.00042786 deg
i 6.369003557515986 1.7681e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      4605 days (12.61 yr)  
   first obs. used      2007-02-23  
   last obs. used      2019-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64102  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 15:27:19  

Additional Information
 Jupiter MOID = 2.01545 au 
 T_jup = 3.269 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.768645811742369E-15 -1.724140309221982E-14 1.168679615018649E-10 -1.676377501403145E-13 2.303446003348232E-11 1.977909942557823E-14
q -1.724140309221982E-14 5.462642456616156E-14 -3.435066910146779E-10 4.84573994201724E-13 -6.79812065746678E-11 -5.265165156474307E-14
tp 1.168679615018649E-10 -3.435066910146779E-10 4.418994233994847E-6 -5.451650311014487E-9 8.718573499718848E-7 6.1319014647143E-10
node -1.676377501403145E-13 4.84573994201724E-13 -5.451650311014487E-9 1.11416633908522E-8 -1.214008013802438E-8 -1.564324634557996E-9
peri 2.303446003348232E-11 -6.79812065746678E-11 8.718573499718848E-7 -1.214008013802438E-8 1.830667656136485E-7 1.674361754233896E-9
i 1.977909942557823E-14 -5.265165156474307E-14 6.1319014647143E-10 -1.564324634557996E-9 1.674361754233896E-9 3.126120546217686E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7   n/a MPO495389  

487466 (2014 SJ138)          Discovered 2007-Feb-23 by Spacewatch at Kitt Peak
Reference: Last Updated: 2017-03-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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