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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2398186743445785 3.9759e-08  
a 3.083396027148655 2.101e-08 au
q 2.343940079438525 1.3023e-07 au
i 7.378038101345851 4.1788e-06 deg
node 157.7287174086217 3.5705e-05 deg
peri 314.2293795216049 3.7837e-05 deg
M 38.53788525220746 9.8233e-06 deg
tp 2458988.796631594636
(2020-May-19.29663159)
5.3594e-05 TDB
period 1977.617923950966
5.41
2.0213e-05
5.534e-08
d
yr
n .1820371850598812 1.8606e-09 deg/d
Q 3.822851974858786 2.6049e-08 au
  Orbit Determination Parameters
   # obs. used (total)      867  
   data-arc span      10781 days (29.52 yr)  
   first obs. used      1991-09-08  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51331  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:38:13  

Additional Information
 Earth MOID = 1.36727 au 
 Jupiter MOID = 1.35166 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 14.88   n/a E2021B55  
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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