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442464 (2011 US274)
Classification: Main-belt Asteroid          SPK-ID: 2442464
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2104512343610783 8.0808e-08  
a 2.625189871757935 2.1181e-08 au
q 2.072715422814277 2.2033e-07 au
i 2.370777192530488 7.2577e-06 deg
node 312.0375906661203 0.00014948 deg
peri 63.23661354661887 0.00015065 deg
M 24.01989586194969 1.6632e-05 deg
tp 2458896.840734709640
(2020-Feb-17.34073471)
7.1225e-05 TDB
period 1553.601053018906
4.25
1.8802e-05
5.148e-08
d
yr
n .2317197193581067 2.8043e-09 deg/d
Q 3.177664320701592 2.5638e-08 au
  Orbit Determination Parameters
   # obs. used (total)      140  
   data-arc span      7636 days (20.91 yr)  
   first obs. used      1998-09-25  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66394  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:15  

Additional Information
 Earth MOID = 1.0751 au 
 Jupiter MOID = 2.29854 au 
 T_jup = 3.370 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457110.5 (2015-Mar-29.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2130943222743509 8.1422e-08  
q 2.065106813846317 2.2266e-07 au
tp 2457340.459527431236
(2015-Nov-13.95952743)
6.2434e-05 TDB
node 312.4111576989225 0.00014935 deg
peri 62.38820567715248 0.00015043 deg
i 2.371728052522966 7.2747e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      140  
   data-arc span      7636 days (20.91 yr)  
   first obs. used      1998-09-25  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66394  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:15  

Additional Information
 Jupiter MOID = 2.29854 au 
 T_jup = 3.370 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.629547638293465E-15 -1.808966697164438E-14 -1.357727865962332E-12 -2.146916243087201E-14 -1.467726254081682E-13 -9.078033536122665E-15
q -1.808966697164438E-14 4.957967761022761E-14 3.787943921344251E-12 6.484598574622285E-14 4.064520038469229E-13 2.551484274614834E-14
tp -1.357727865962332E-12 3.787943921344251E-12 3.897968214298643E-9 8.7528622006485E-12 1.142983701353848E-9 2.06750289266576E-12
node -2.146916243087201E-14 6.484598574622285E-14 8.7528622006485E-12 2.230467439636393E-8 -2.228334447487674E-8 5.03347103920257E-10
peri -1.467726254081682E-13 4.064520038469229E-13 1.142983701353848E-9 -2.228334447487674E-8 2.263052424400817E-8 -5.026594824974757E-10
i -9.078033536122665E-15 2.551484274614834E-14 2.06750289266576E-12 5.03347103920257E-10 -5.026594824974757E-10 5.2921554217597E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.4   n/a MPO477089  

442464 (2011 US274)          Discovered 2000-Feb-04 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 US274 = 2000 CO134 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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