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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1263420995876982 3.8405e-08  
a 3.176331762296857 2.1843e-08 au
q 2.775027338461179 1.2626e-07 au
i 7.354936875717101 4.4444e-06 deg
node 143.6210852171907 3.2477e-05 deg
peri 264.8528619972156 3.8124e-05 deg
M 285.1188821121586 2.2942e-05 deg
tp 2459630.587709015551
(2022-Feb-20.08770902)
0.00013431 TDB
period 2067.698501476812
5.66
2.1329e-05
5.84e-08
d
yr
n .1741066213197316 1.796e-09 deg/d
Q 3.577636186132536 2.4603e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1848  
   data-arc span      13884 days (38.01 yr)  
   first obs. used      1982-11-11  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5354  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:15:57  

Additional Information
 Earth MOID = 1.79659 au 
 Jupiter MOID = 1.84678 au 
 T_jup = 3.176 
[ 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

[ show close-approach data ]
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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