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43012 (1999 US49)
Classification: Main-belt Asteroid          SPK-ID: 2043012
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1003839949147586 3.2523e-08  
a 2.579706959784547 9.5159e-09 au
q 2.320745669451967 8.4542e-08 au
i 4.015263162677964 4.2096e-06 deg
node 131.0231665923334 5.1882e-05 deg
peri 238.677931575543 5.6291e-05 deg
M 59.01366968607364 2.1657e-05 deg
tp 2458952.412941039121
(2020-Apr-12.91294104)
9.0804e-05 TDB
period 1513.40090695957
4.14
8.3739e-06
2.293e-08
d
yr
n .2378748409258205 1.3162e-09 deg/d
Q 2.838668250117126 1.0471e-08 au
  Orbit Determination Parameters
   # obs. used (total)      834  
   data-arc span      10638 days (29.13 yr)  
   first obs. used      1991-12-28  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55063  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:14:56  

Additional Information
 Earth MOID = 1.32122 au 
 Jupiter MOID = 2.61923 au 
 T_jup = 3.415 
[ 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 15.67   n/a MPCxxxxx  

43012 (1999 US49)          Discovered 1999-Oct-30 by CSS at Catalina
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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