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21084 (1991 UV3)
Classification: Main-belt Asteroid          SPK-ID: 2021084
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1712586647908458 3.4764e-08  
a 2.725498283762469 1.2359e-08 au
q 2.258733086795567 9.4293e-08 au
i 8.806431993141377 4.6582e-06 deg
node 237.559438479986 2.7285e-05 deg
peri 224.409825661288 3.1912e-05 deg
M 165.4734783749142 1.4995e-05 deg
tp 2458641.071802268973
(2019-Jun-06.57180227)
6.7275e-05 TDB
period 1643.490871491815
4.50
1.1179e-05
3.061e-08
d
yr
n .2190459382796718 1.49e-09 deg/d
Q 3.192263480729371 1.4476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1457  
   data-arc span      10823 days (29.63 yr)  
   first obs. used      1991-10-31  
   last obs. used      2021-06-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51041  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:30:17  

Additional Information
 Earth MOID = 1.28511 au 
 Jupiter MOID = 2.04074 au 
 T_jup = 3.318 
[ 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 MPO467953  
diameter diameter 4.967 km 0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.216   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

Alternate Designations
 1991 UV3 = 1998 KV27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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