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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1090142726275355 2.4215e-08  
a 2.549007348742154 9.3454e-09 au
q 2.271129166696785 6.0733e-08 au
i 4.259005482008361 4.6581e-06 deg
node 163.7924356518706 4.729e-05 deg
peri 116.9406492789473 5.4963e-05 deg
M 218.8917906054111 2.6967e-05 deg
tp 2459979.146092587913
(2023-Feb-03.64609259)
0.00011158 TDB
period 1486.466267494796
4.07
8.1747e-06
2.238e-08
d
yr
n .242185112351539 1.3319e-09 deg/d
Q 2.826885530787523 1.0364e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1868  
   data-arc span      8801 days (24.10 yr)  
   first obs. used      1997-03-02  
   last obs. used      2021-04-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49102  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:37:23  

Additional Information
 Earth MOID = 1.2584 au 
 Jupiter MOID = 2.28803 au 
 T_jup = 3.429 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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

Alternate Designations
 1999 UF14 = 1998 MA20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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