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541949 (2012 ET15)
Classification: Main-belt Asteroid          SPK-ID: 2541949
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1009966386753966 7.5311e-08  
a 2.628425499557503 3.3597e-08 au
q 2.362963359093496 2.1192e-07 au
i 10.29662439677402 6.444e-06 deg
node 48.07726848146954 3.9325e-05 deg
peri 278.3742773837711 4.9061e-05 deg
M 195.6451704854728 3.2035e-05 deg
tp 2459911.094601981033
(2022-Nov-27.59460198)
0.00014323 TDB
period 1556.474229986412
4.26
2.9843e-05
8.171e-08
d
yr
n .2312919758415421 4.4347e-09 deg/d
Q 2.893887640021512 3.699e-08 au
  Orbit Determination Parameters
   # obs. used (total)      168  
   data-arc span      7701 days (21.08 yr)  
   first obs. used      2000-03-15  
   last obs. used      2021-04-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61464  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 13:25:52  

Additional Information
 Earth MOID = 1.37721 au 
 Jupiter MOID = 2.40987 au 
 T_jup = 3.371 
[ 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 16.57   .33312 MPCxxxxx autocmod 2.8

541949 (2012 ET15)          Discovered 2010-Oct-12 by Mount Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2019-12-13

Alternate Designations
 2012 ET15 = 2013 KQ = 2014 WY213 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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