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201990 (2004 PC78)
Classification: Main-belt Asteroid          SPK-ID: 2201990
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07831577607796515 5.4918e-08  
a 2.536786420973042 1.6056e-08 au
q 2.338116023670495 1.4043e-07 au
i 3.454622874970235 3.6141e-06 deg
node 225.0160006448257 0.00010526 deg
peri 60.1889652795936 0.0001121 deg
M 3.847836432267304 3.7522e-05 deg
tp 2458984.726125364579
(2020-May-15.22612536)
0.00015386 TDB
period 1475.789048913814
4.04
1.4011e-05
3.836e-08
d
yr
n .2439373027364319 2.3159e-09 deg/d
Q 2.73545681827559 1.7313e-08 au
  Orbit Determination Parameters
   # obs. used (total)      314  
   data-arc span      7332 days (20.07 yr)  
   first obs. used      2000-09-19  
   last obs. used      2020-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5651  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 05:02:43  

Additional Information
 Earth MOID = 1.32409 au 
 Jupiter MOID = 2.35835 au 
 T_jup = 3.441 
[ 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 16.4   n/a MPO433323  

201990 (2004 PC78)          Discovered 2004-Aug-09 by LINEAR at Socorro
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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