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2819 Ensor (1933 UR)
Classification: Main-belt Asteroid          SPK-ID: 2002819
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2017733414522901 3.2005e-08  
a 2.759101316453245 8.7586e-09 au
q 2.202388224427061 8.9019e-08 au
i 2.430628552621001 3.6199e-06 deg
node 18.25775310967918 7.0099e-05 deg
peri 344.1512850035961 7.0547e-05 deg
M 338.919232907863 7.1248e-06 deg
tp 2459098.524313345327
(2020-Sep-06.02431335)
3.3138e-05 TDB
period 1673.978591484936
4.58
7.9709e-06
2.182e-08
d
yr
n .2150565137638079 1.024e-09 deg/d
Q 3.315814408479429 1.0526e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2776  
   data-arc span      31802 days (87.07 yr)  
   first obs. used      1933-10-20  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4216  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:08:34  

Additional Information
 Earth MOID = 1.19998 au 
 Jupiter MOID = 2.14025 au 
 T_jup = 3.311 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456926.5 (2014-Sep-26.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .20464664865809 3.2108e-08  
q 2.192855597013983 8.963e-08 au
tp 2457426.313007926416
(2016-Feb-07.81300793)
3.3314e-05 TDB
node 18.40274871341006 6.988e-05 deg
peri 344.3599079013333 7.0313e-05 deg
i 2.436511328630536 3.6261e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2776  
   data-arc span      31802 days (87.07 yr)  
   first obs. used      1933-10-20  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4216  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:08:34  

Additional Information
 Jupiter MOID = 2.14025 au 
 T_jup = 3.311 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.030894824762211E-15 -2.869219659752998E-15 1.876745308497602E-13 -6.853339815423134E-15 6.979568289971638E-14 -1.764178959422993E-16
q -2.869219659752998E-15 8.033605959068298E-15 -5.7423420460933E-13 1.810091219548386E-14 -2.069920525200872E-13 5.343550876061683E-16
tp 1.876745308497602E-13 -5.7423420460933E-13 1.109829388700287E-9 -4.812407668595315E-12 2.667957604491875E-10 2.350753718490602E-13
node -6.853339815423134E-15 1.810091219548386E-14 -4.812407668595315E-12 4.883232813386284E-9 -4.879629179123128E-9 1.135501186161038E-11
peri 6.979568289971638E-14 -2.069920525200872E-13 2.667957604491875E-10 -4.879629179123128E-9 4.943918519317719E-9 -1.128851317644049E-11
i -1.764178959422993E-16 5.343550876061683E-16 2.350753718490602E-13 1.135501186161038E-11 -1.128851317644049E-11 1.314867553962074E-11

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 11.9   n/a MPO337272  
diameter diameter 9.700 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.247   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2819 Ensor (1933 UR)          Discovered 1933-Oct-20 by Delporte, E. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1933 UR = 1942 RC = 1965 UB = 1970 XG = 1977 ES3 = 1977 GR = 1979 UZ1 = 2019 GZ34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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