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21880 (1999 UF14)
Classification: Main-belt Asteroid          SPK-ID: 2021880
[ 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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1091294410652751 2.4303e-08  
a 2.548796297407027 9.3539e-09 au
q 2.270647582081755 6.0978e-08 au
i 4.258698275691041 4.7311e-06 deg
node 163.7977710479688 4.805e-05 deg
peri 116.8936035499621 5.5841e-05 deg
M 171.4753048042277 2.7407e-05 deg
tp 2458492.553888033634
(2019-Jan-09.05388803)		 0.00011302 TDB
period 1486.281657868255
4.07		 8.1819e-06
2.24e-08		 d
yr
n .2422151939332557 1.3334e-09 deg/d
Q 2.826945012732298 1.0375e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1844  
   data-arc span      8723 days (23.88 yr)  
   first obs. used      1997-03-02  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49241  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:54:52  

Additional Information
 Earth MOID = 1.25628 au 
 Jupiter MOID = 2.28909 au 
 T_jup = 3.429 
[ 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 14.2   n/a MPO347691  
diameter diameter 3.949 km 0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.312   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21880 (1999 UF14)          Discovered 1999-Oct-29 by CSS at Catalina
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 UF14 = 1998 MA20 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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