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21052 (1990 UG5)
Classification: Main-belt Asteroid          SPK-ID: 2021052
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1565710201623761 4.8961e-08  
a 2.772872456139339 1.3936e-08 au
q 2.338720986901449 1.3444e-07 au
i 8.70797765612077 5.0619e-06 deg
node 183.769090197495 2.6248e-05 deg
peri 206.081588870605 2.9432e-05 deg
M 194.2186878577377 1.4261e-05 deg
tp 2459977.151775627367
(2023-Feb-01.65177563)
6.9642e-05 TDB
period 1686.526880580623
4.62
1.2715e-05
3.481e-08
d
yr
n .213456425832989 1.6092e-09 deg/d
Q 3.207023925377229 1.6118e-08 au
  Orbit Determination Parameters
   # obs. used (total)      791  
   data-arc span      11077 days (30.33 yr)  
   first obs. used      1990-10-16  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56776  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:37:29  

Additional Information
 Earth MOID = 1.34546 au 
 Jupiter MOID = 2.25166 au 
 T_jup = 3.302 
[ 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 15.15   n/a E2021B10  

21052 (1990 UG5)          Discovered 1990-Oct-16 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 UG5 = 1997 GK1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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