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19933 (1981 EW5)
Classification: Main-belt Asteroid          SPK-ID: 2019933
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1502590755999347 4.9294e-08  
a 2.55187893968634 1.3228e-08 au
q 2.168435969166129 1.2382e-07 au
i 12.61272070431616 5.2429e-06 deg
node 223.6974369673486 2.1571e-05 deg
peri 190.550352802585 2.6592e-05 deg
M 329.0045065047509 1.6702e-05 deg
tp 2459128.698983928800
(2020-Oct-06.19898393)
6.9196e-05 TDB
period 1488.978848536217
4.08
1.1577e-05
3.17e-08
d
yr
n .2417764364845802 1.8799e-09 deg/d
Q 2.935321910206551 1.5215e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1045  
   data-arc span      14425 days (39.49 yr)  
   first obs. used      1981-02-02  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50202  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:31:26  

Additional Information
 Earth MOID = 1.18043 au 
 Jupiter MOID = 2.44254 au 
 T_jup = 3.390 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456188.5 (2012-Sep-18.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1518110043344259 4.9311e-08  
q 2.165453572445792 1.2411e-07 au
tp 2456146.269887349220
(2012-Aug-06.76988735)
6.8789e-05 TDB
node 223.7728882821716 2.1526e-05 deg
peri 189.7799083723496 2.6448e-05 deg
i 12.624704136639 5.2469e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1045  
   data-arc span      14425 days (39.49 yr)  
   first obs. used      1981-02-02  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50202  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:31:26  

Additional Information
 Jupiter MOID = 2.44254 au 
 T_jup = 3.390 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.431594066557653E-15 -6.096666941546843E-15 6.240559042256792E-13 1.229058409952723E-14 1.111636756682493E-13 -4.286885512812679E-15
q -6.096666941546843E-15 1.540407068652856E-14 -1.740024637817191E-12 -3.334142521441128E-14 -3.160671647306721E-13 1.083182519824003E-14
tp 6.240559042256792E-13 -1.740024637817191E-12 4.731940762153783E-9 1.896840243740124E-11 1.079015198028831E-9 1.913884893748182E-12
node 1.229058409952723E-14 -3.334142521441128E-14 1.896840243740124E-11 4.633614775945719E-10 -4.475213401894228E-10 1.877385390217498E-11
peri 1.111636756682493E-13 -3.160671647306721E-13 1.079015198028831E-9 -4.475213401894228E-10 6.994799486153183E-10 -1.790185748268705E-11
i -4.286885512812679E-15 1.083182519824003E-14 1.913884893748182E-12 1.877385390217498E-11 -1.790185748268705E-11 2.753012795114659E-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 14.0   n/a MPO474028  
diameter diameter 9.534 km 0.204 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19933 (1981 EW5)          Discovered 1981-Mar-07 by Bus, S. J. at Siding Spring
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

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