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180801 (2005 ET99)
Classification: Main-belt Asteroid          SPK-ID: 2180801
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03958510083445282 9.7972e-08  
a 2.110580405015622 1.3151e-08 au
q 2.027032866863859 2.049e-07 au
i 3.941250537607332 1.1193e-05 deg
node 278.7750220598928 0.0001033 deg
peri 256.8804205686803 0.00017912 deg
M 40.24605012005954 0.00014686 deg
tp 2459075.294893362896
(2020-Aug-13.79489336)
0.00045689 TDB
period 1119.956821971248
3.07
1.0468e-05
2.866e-08
d
yr
n .3214409635599702 3.0044e-09 deg/d
Q 2.194127943167386 1.3672e-08 au
  Orbit Determination Parameters
   # obs. used (total)      260  
   data-arc span      6560 days (17.96 yr)  
   first obs. used      2002-01-19  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6348  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 22:19:09  

Additional Information
 Earth MOID = 1.03434 au 
 Jupiter MOID = 2.77879 au 
 T_jup = 3.735 
[ 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 17.4   n/a MPO454243  

180801 (2005 ET99)          Discovered 2005-Mar-03 by CSS at Catalina
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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