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20844 (2000 UK97)
Classification: Main-belt Asteroid          SPK-ID: 2020844
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1310472044174678 1.9425e-08  
a 2.653797142330823 1.1642e-08 au
q 2.306024445737304 5.0232e-08 au
i 9.578129518967865 8.37e-07 deg
node 9.052106617611438 2.2611e-06 deg
peri 153.540143102312 6.6068e-06 deg
M 138.2485007079824 6.2947e-06 deg
tp 2458594.101749907534
(2019-Apr-20.60174991)
2.5512e-05 TDB
period 1579.065009134548
4.32
1.0391e-05
2.845e-08
d
yr
n .2279830139465306 1.5003e-09 deg/d
Q 3.001569838924342 1.3168e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1735  
   data-arc span      16190 days (44.33 yr)  
   first obs. used      1976-04-01  
   last obs. used      2020-07-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46165  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:32:44  

Additional Information
 Earth MOID = 1.31689 au 
 Jupiter MOID = 1.9745 au 
 T_jup = 3.357 
[ 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 13.76   n/a E2021B10  
diameter diameter 4.497 km 0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.348   0.117 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20844 (2000 UK97)          Discovered 2000-Oct-25 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 UK97 = 1976 GS = 1976 GU7 = 1989 ES1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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