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JPL Small-Body Database Browser
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91283 (1999 FE2)
Classification: Main-belt Asteroid          SPK-ID: 2091283
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1634836656937355 3.7188e-08  
a 2.348227506980288 7.2135e-09 au
q 1.964330666256288 8.8534e-08 au
i 5.169731724835947 4.3041e-06 deg
node 171.9278600601069 3.7047e-05 deg
peri 340.7280324447314 3.8923e-05 deg
M 335.9320547171874 1.1688e-05 deg
tp 2459088.370924996596
(2020-Aug-26.87092500)
4.2813e-05 TDB
period 1314.342899946865
3.60
6.0563e-06
1.658e-08
d
yr
n .2739011258131754 1.2621e-09 deg/d
Q 2.732124347704287 8.3928e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1119  
   data-arc span      7629 days (20.89 yr)  
   first obs. used      1999-02-14  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5084  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:01:41  

Additional Information
 Earth MOID = .97541 au 
 Jupiter MOID = 2.26357 au 
 T_jup = 3.536 
[ 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 15.5   n/a MPO449561  
diameter diameter 1.804 km 0.259 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.406   0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91283 (1999 FE2)          Discovered 1999-Mar-16 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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