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4889 Praetorius (1982 UW3)
Classification: Main-belt Asteroid          SPK-ID: 2004889
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1976159508690017 2.2484e-08  
a 3.088591119735368 1.4303e-08 au
q 2.478236248763309 7.3381e-08 au
i 13.92867380905205 1.3066e-06 deg
node 185.5827789698122 3.3028e-06 deg
peri 276.2076027113358 3.8722e-06 deg
M 291.8949137264679 4.1811e-06 deg
tp 2459575.573258242062
(2021-Dec-27.07325824)
2.4578e-05 TDB
period 1982.618044485437
5.43
1.3772e-05
3.771e-08
d
yr
n .1815780911514066 1.2613e-09 deg/d
Q 3.698945990707427 1.7129e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2619  
   data-arc span      15350 days (42.03 yr)  
   first obs. used      1979-02-02  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45134  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:54:37  

Additional Information
 Earth MOID = 1.5414 au 
 Jupiter MOID = 1.71935 au 
 T_jup = 3.151 
[ 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 12.37   n/a E2021B10  
diameter diameter 21.181 km 0.307 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.024   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

4889 Praetorius (1982 UW3)          Discovered 1982-Oct-19 by Borngen, F. at Tautenburg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1982 UW3 = 1979 CB = 1979 ED = 1990 FC3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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