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21164 (1993 UZ7)
Classification: Main-belt Asteroid          SPK-ID: 2021164
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1256010928029992 3.8213e-08  
a 3.172372248955629 2.1077e-08 au
q 2.773918827708894 1.2551e-07 au
i 7.357951240178382 4.2898e-06 deg
node 143.6242608466738 3.2391e-05 deg
peri 265.272201029108 3.7986e-05 deg
M 318.8183358127215 2.3162e-05 deg
tp 2459632.589151950813
(2022-Feb-22.08915195)
0.00013414 TDB
period 2063.833416633702
5.65
2.0567e-05
5.631e-08
d
yr
n .17443268293775 1.7383e-09 deg/d
Q 3.570825670202364 2.3724e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1876  
   data-arc span      14074 days (38.53 yr)  
   first obs. used      1982-11-11  
   last obs. used      2021-05-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5326  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:06:11  

Additional Information
 Earth MOID = 1.79599 au 
 Jupiter MOID = 1.85083 au 
 T_jup = 3.177 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.05   n/a E2021B10  
diameter diameter 16.587 km 3.171 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.043   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

21164 (1993 UZ7)          Discovered 1993-Oct-20 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1993 UZ7 = 1982 VD10 = 1987 SQ22 = 1998 OE15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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