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201987 (2004 PA66)
Classification: Main-belt Asteroid          SPK-ID: 2201987
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2174587018175034 4.2346e-08  
a 2.320759483911737 1.2819e-08 au
q 1.816090139309632 1.0047e-07 au
i 2.221741358525251 5.0235e-06 deg
node 153.7328853875457 0.00013129 deg
peri 160.5039055916037 0.00013197 deg
M 283.0340220559048 1.6832e-05 deg
tp 2459672.583161112700
(2022-Apr-03.08316111)
6.2107e-05 TDB
period 1291.348991534475
3.54
1.0699e-05
2.929e-08
d
yr
n .278778240707976 2.3098e-09 deg/d
Q 2.825428828513842 1.5607e-08 au
  Orbit Determination Parameters
   # obs. used (total)      242  
   data-arc span      8679 days (23.76 yr)  
   first obs. used      1997-08-11  
   last obs. used      2021-05-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58205  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 03:13:23  

Additional Information
 Earth MOID = .801811 au 
 Jupiter MOID = 2.46452 au 
 T_jup = 3.545 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457225.5 (2015-Jul-22.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2181630217338241 4.2331e-08  
q 1.814492433160347 1.005e-07 au
tp 2457089.181130779164
(2015-Mar-07.68113078)
4.7596e-05 TDB
node 153.7606774700209 0.00013128 deg
peri 160.445857245289 0.00013195 deg
i 2.221468885716599 5.0255e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      242  
   data-arc span      8679 days (23.76 yr)  
   first obs. used      1997-08-11  
   last obs. used      2021-05-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58205  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 03:13:23  

Additional Information
 Jupiter MOID = 2.46452 au 
 T_jup = 3.545 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.791899703467137E-15 -4.2339769618026E-15 -6.813847265456678E-14 -4.337979906753889E-14 4.384658897137846E-14 -8.187283038407149E-16
q -4.2339769618026E-15 1.010083303266038E-14 4.16176307671168E-13 1.013936771284219E-13 -3.437245669060111E-14 2.031137986235552E-15
tp -6.813847265456678E-14 4.16176307671168E-13 2.265391263841168E-9 -7.076713000683446E-12 6.550222130537367E-10 -2.985689833619008E-13
node -4.337979906753889E-14 1.013936771284219E-13 -7.076713000683446E-12 1.723342138991618E-8 -1.722224758468916E-8 1.106497262077184E-10
peri 4.384658897137846E-14 -3.437245669060111E-14 6.550222130537367E-10 -1.722224758468916E-8 1.74101459575455E-8 -1.106709077299405E-10
i -8.187283038407149E-16 2.031137986235552E-15 -2.985689833619008E-13 1.106497262077184E-10 -1.106709077299405E-10 2.525548194711272E-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 17.3   n/a MPO454432  

201987 (2004 PA66)          Discovered 2004-Aug-08 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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