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20671 (1999 UX48)
Classification: Main-belt Asteroid          SPK-ID: 2020671
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1457147539982774 3.6169e-08  
a 2.674141187446636 1.2724e-08 au
q 2.284479362161188 9.6473e-08 au
i 10.34634125667815 3.5643e-06 deg
node 260.4144345047441 2.1075e-05 deg
peri 304.7686622643699 2.4708e-05 deg
M 116.907775709604 1.2979e-05 deg
tp 2458681.800507042557
(2019-Jul-17.30050704)
5.6431e-05 TDB
period 1597.257464965518
4.37
1.14e-05
3.121e-08
d
yr
n .2253863311934947 1.6086e-09 deg/d
Q 3.063803012732083 1.4578e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1151  
   data-arc span      10567 days (28.93 yr)  
   first obs. used      1991-12-30  
   last obs. used      2020-12-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51968  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:26:18  

Additional Information
 Earth MOID = 1.29602 au 
 Jupiter MOID = 2.0006 au 
 T_jup = 3.341 
[ 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 14.52   n/a E2021B10  
diameter diameter 6.521 km 0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20671 (1999 UX48)          Discovered 1999-Oct-31 by CSS at Catalina
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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