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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1718411513329573 6.2e-08  
a 2.72606784664907 2.3507e-08 AU
q 2.257617209269138 1.7211e-07 AU
i 8.8053651993275 7.1327e-06 deg
node 237.6396488054554 4.5712e-05 deg
peri 224.9333289758732 5.4642e-05 deg
M .04370433775533201 2.4047e-05 deg
tp 2457000.300416120332
(2014-Dec-08.80041612)
0.00010981 JED
period 1644.006072865882
4.50
2.1265e-05
5.822e-08
d
yr
n .2189772932969992 2.8324e-09 deg/d
Q 3.194518484029002 2.7547e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      692  
   data-arc span      8511 days (23.30 yr)  
   first obs. used      1991-10-31  
   last obs. used      2015-02-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53959  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 15:03:21  

Additional Information
 Earth MOID = 1.28382 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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