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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1718411455221446 6.2412e-08  
a 2.726067853122296 2.4897e-08 AU
q 2.257617230470667 1.7408e-07 AU
i 8.805364201558968 7.8737e-06 deg
node 237.6396524262325 4.7293e-05 deg
peri 224.9333289547841 5.6159e-05 deg
M .04369833622074798 2.5206e-05 deg
tp 2457000.300443526731
(2014-Dec-08.80044353)
0.00011511 JED
period 1644.006078721581
4.50
2.2522e-05
6.166e-08
d
yr
n .2189772925170354 2.9999e-09 deg/d
Q 3.194518475773924 2.9175e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      622  
   data-arc span      8460 days (23.16 yr)  
   first obs. used      1991-10-31  
   last obs. used      2014-12-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56553  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:48:56  

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 14.0 mag n/a MPO279734  

21084 (1991 UV3)          Discovered 1991-Oct-31 by Ueda, S., Kaneda, H. at Kushiro (399)
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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