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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0783157794524848 5.5227e-08  
a 2.53678641822728 1.8956e-08 au
q 2.338116012579333 1.4231e-07 au
i 3.454623092005359 4.8638e-06 deg
node 225.0159909366495 0.00011118 deg
peri 60.18897257864555 0.00011842 deg
M 3.847839922798774 4.1181e-05 deg
tp 2458984.726111081055
(2020-May-15.22611108)
0.00016882 TDB
period 1475.789046517772
4.04
1.6541e-05
4.529e-08
d
yr
n .2439373031324805 2.7342e-09 deg/d
Q 2.735456823875226 2.044e-08 au
  Orbit Determination Parameters
   # obs. used (total)      246  
   data-arc span      7211 days (19.74 yr)  
   first obs. used      2000-09-19  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58373  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 04:02:12  

Additional Information
 Earth MOID = 1.32409 au 
 Jupiter MOID = 2.35835 au 
 T_jup = 3.441 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457330.5 (2015-Nov-04.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07706969916671981 5.5451e-08  
q 2.339895837771264 1.4251e-07 au
tp 2457511.337272520913
(2016-May-02.83727252)
0.00017141 TDB
node 225.0472686695249 0.00011111 deg
peri 60.5518655789659 0.00011851 deg
i 3.455899056621067 4.8663e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      246  
   data-arc span      7211 days (19.74 yr)  
   first obs. used      2000-09-19  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58373  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 04:02:12  

Additional Information
 Jupiter MOID = 2.35835 au 
 T_jup = 3.441 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.074791279484042E-15 -7.843050426094732E-15 4.904693299602534E-12 6.535807139510533E-14 1.217374160043389E-12 -3.135384083352197E-15
q -7.843050426094732E-15 2.030815468563684E-14 -1.268139615561003E-11 -1.662262503460067E-13 -3.160044171482355E-12 8.27969637031103E-15
tp 4.904693299602534E-12 -1.268139615561003E-11 2.938060717533378E-8 2.783396423564105E-10 7.129991642765316E-9 -7.87065921434576E-12
node 6.535807139510533E-14 -1.662262503460067E-13 2.783396423564105E-10 1.234572817785512E-8 -1.225332774850714E-8 -1.454859926682874E-10
peri 1.217374160043389E-12 -3.160044171482355E-12 7.129991642765316E-9 -1.225332774850714E-8 1.4045336953777E-8 1.432361420191444E-10
i -3.135384083352197E-15 8.27969637031103E-15 -7.87065921434576E-12 -1.454859926682874E-10 1.432361420191444E-10 2.368059117033437E-11

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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