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39582 (1993 FR21)
Classification: Main-belt Asteroid          SPK-ID: 2039582
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02762617307279245 4.6141e-08  
a 2.727000340566436 1.8042e-08 au
q 2.651663757188384 1.2059e-07 au
i 5.457603021091797 5.8262e-06 deg
node 4.88483168702717 4.0104e-05 deg
peri 113.0835606693045 0.00011406 deg
M 83.24203327599422 0.00010677 deg
tp 2458620.164911264979
(2019-May-16.66491127)
0.00048677 TDB
period 1644.849681778417
4.50
1.6323e-05
4.469e-08
d
yr
n .2188649844347884 2.172e-09 deg/d
Q 2.802336923944488 1.854e-08 au
  Orbit Determination Parameters
   # obs. used (total)      763  
   data-arc span      9944 days (27.23 yr)  
   first obs. used      1993-03-21  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53824  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:02:11  

Additional Information
 Earth MOID = 1.67286 au 
 Jupiter MOID = 2.19892 au 
 T_jup = 3.349 
[ 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 15.3   n/a MPO426180  
diameter diameter 4.716 km 0.108 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39582 (1993 FR21)          Discovered 1993-Mar-21 by UESAC at La Silla
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1993 FR21 = 1999 RJ69 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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