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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1721472122635428 5.9121e-08  
a 2.724909093480279 2.1452e-08 au
q 2.255823589366071 1.6173e-07 au
i 8.808168399442652 6.78e-06 deg
node 237.5772347635504 4.3158e-05 deg
peri 224.698037661826 5.0516e-05 deg
M 131.7093200109091 2.1247e-05 deg
tp 2456999.408673918587
(2014-Dec-07.90867392)
9.8231e-05 JED
period 1642.957972688536
4.50
1.9402e-05
5.312e-08
d
yr
n .2191169865476816 2.5876e-09 deg/d
Q 3.193994597594486 2.5145e-08 au
  Orbit Determination Parameters
   # obs. used (total)      759  
   data-arc span      8933 days (24.46 yr)  
   first obs. used      1991-10-31  
   last obs. used      2016-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53605  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:36:07  

Additional Information
 Earth MOID = 1.28056 au 
 Jupiter MOID = 2.04443 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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