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43002 (1999 US12)
Classification: Main-belt Asteroid          SPK-ID: 2043002
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1265886646382318 4.1644e-08  
a 2.427973681390009 1.0627e-08 au
q 2.120619735286077 9.9383e-08 au
i 6.523236060471177 4.3126e-06 deg
node 203.9312944540371 3.1013e-05 deg
peri 137.5363471015565 3.3813e-05 deg
M 238.2396316795491 1.4613e-05 deg
tp 2459667.877543294722
(2022-Mar-29.37754329)
5.7523e-05 TDB
period 1381.861092463857
3.78
9.072e-06
2.484e-08
d
yr
n .2605182257198662 1.7103e-09 deg/d
Q 2.735327627493943 1.1972e-08 au
  Orbit Determination Parameters
   # obs. used (total)      756  
   data-arc span      8332 days (22.81 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55124  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:14:51  

Additional Information
 Earth MOID = 1.11653 au 
 Jupiter MOID = 2.66244 au 
 T_jup = 3.490 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.95   n/a E2021B10  

43002 (1999 US12)          Discovered 1999-Oct-29 by CSS at Catalina
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 US12 = 1998 HC81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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