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271480 (2004 FX31)
Classification: Apollo [NEO]          SPK-ID: 2271480
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 151 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4419574657811078 2.6465e-08  
a 1.260836710464659 2.9932e-09 au
q .7036005131439101 3.4081e-08 au
i 24.75048887634519 6.7496e-06 deg
node 169.1536750592877 9.1726e-06 deg
peri 285.7936082340896 9.5567e-06 deg
M 196.5004140581468 1.7367e-05 deg
tp 2459235.355562660991
(2021-Jan-20.85556266)
2.5709e-05 TDB
period 517.1144750667756
1.42
1.8414e-06
5.041e-09
d
yr
n .6961708042566643 2.4791e-09 deg/d
Q 1.818072907785409 4.3161e-09 au
  Orbit Determination Parameters
   # obs. used (total)      758  
   data-arc span      11038 days (30.22 yr)  
   first obs. used      1990-06-22  
   last obs. used      2020-09-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4632  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-01 06:51:38  

Additional Information
 Earth MOID = .066344 au 
 Jupiter MOID = 3.54418 au 
 T_jup = 4.929 
[ 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 17.6   n/a MPO386136  
diameter diameter 0.709 km 0.223 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.352   0.222 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

271480 (2004 FX31)          Discovered 2004-Mar-31 by LONEOS at Anderson Mesa
Reference: 20110418/Numbers.arcLast Updated: 2011-04-22

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