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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 179 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4419606548962164 2.1717e-08  
a 1.260741837160537 8.9303e-10 au
q .7035435491540066 2.7178e-08 au
i 24.7540127236079 6.3603e-06 deg
node 169.1454839735187 8.618e-06 deg
peri 285.8129052362343 7.4131e-06 deg
M 335.7241597205312 6.4921e-06 deg
tp 2459235.366587598420
(2021-Jan-20.86658760)		 9.341e-06 TDB
period 517.0561097342096
1.42		 5.4938e-07
1.504e-09		 d
yr
n .6962493880694233 7.3977e-10 deg/d
Q 1.817940125167066 1.2877e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1062  
   data-arc span      11260 days (30.83 yr)  
   first obs. used      1990-06-22  
   last obs. used      2021-04-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41263  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-21 06:23:19  

Additional Information
 Earth MOID = .0667551 au 
 Jupiter MOID = 3.54402 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 17.52   n/a E2021B55  
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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