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101719 (1999 EF)
Classification: Main-belt Asteroid          SPK-ID: 2101719
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2398607133932149 4.4072e-08  
a 3.083735951275159 2.2633e-08 au
q 2.344068846085995 1.4559e-07 au
i 7.377485732012821 4.1977e-06 deg
node 157.7301578904178 3.6581e-05 deg
peri 314.262234536527 3.877e-05 deg
M 2.109846489706053 9.7619e-06 deg
tp 2458988.907888236297
(2020-May-19.40788824)
5.3618e-05 TDB
period 1977.944962012218
5.42
2.1775e-05
5.962e-08
d
yr
n .1820070866045545 2.0037e-09 deg/d
Q 3.823403056464322 2.8061e-08 au
  Orbit Determination Parameters
   # obs. used (total)      828  
   data-arc span      10442 days (28.59 yr)  
   first obs. used      1991-09-08  
   last obs. used      2020-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51584  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:58:52  

Additional Information
 Earth MOID = 1.36749 au 
 Jupiter MOID = 1.3512 au 
 T_jup = 3.170 
[ 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 14.8   n/a MPO325164  
diameter diameter 4.632 km 0.496 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.109   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101719 (1999 EF)          Discovered 1999-Mar-10 by Comba, P. G. at Prescott
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 EF = 2002 RE197 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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