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21084 (1991 UV3)
Classification: Main-belt Asteroid          SPK-ID: 2021084
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .172139431793381 6.1617e-08  
a 2.725459684413267 2.3507e-08 au
q 2.2563006029626 1.7089e-07 au
i 8.806950992127421 6.893e-06 deg
node 237.5792906721776 4.555e-05 deg
peri 224.7694888789742 5.4469e-05 deg
M 87.80642943539169 2.3506e-05 deg
tp 2456999.650001050488
(2014-Dec-08.15000105)
0.00010886 JED
period 1643.455958176791
4.50
2.1262e-05
5.821e-08
d
yr
n .2190505916564841 2.8339e-09 deg/d
Q 3.194618765863935 2.7553e-08 au
  Orbit Determination Parameters
   # obs. used (total)      714  
   data-arc span      8569 days (23.46 yr)  
   first obs. used      1991-10-31  
   last obs. used      2015-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5331  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:38:40  

Additional Information
 Earth MOID = 1.28234 au 
 Jupiter MOID = 2.04499 au 
 T_jup = 3.318 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO324504  

21084 (1991 UV3)          Discovered 1991-Oct-31 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 UV3 = 1998 KV27 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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