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164211 (2004 JA27)
Classification: Apollo [NEO, PHA]          SPK-ID: 2164211
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 107 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4233140521998718 2.2613e-08  
a 1.666323918369004 1.5288e-09 au
q .9609455882066525 3.7728e-08 au
i 2.258029635064115 4.9308e-06 deg
node 67.77005784405405 7.5543e-05 deg
peri 270.197916444851 7.6108e-05 deg
M 207.4287254706463 4.3619e-06 deg
tp 2459533.472098064510
(2021-Nov-14.97209806)
9.5501e-06 TDB
period 785.6652942894667
2.15
1.0812e-06
2.96e-09
d
yr
n .4582103888470391 6.3059e-10 deg/d
Q 2.371702248531355 2.176e-09 au
  Orbit Determination Parameters
   # obs. used (total)      463  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      6174 days (16.90 yr)  
   first obs. used      2004-05-15  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58545  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:17:54  

Additional Information
 Earth MOID = .032516 au 
 Jupiter MOID = 3.031 au 
 T_jup = 4.147 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 19.4   n/a MPO123687  

164211 (2004 JA27)          Discovered 2004-May-15 by LINEAR at Socorro
Reference: 20070926/Numbers.arcLast Updated: 2007-09-30

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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