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JPL Small-Body Database Browser
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20422 (1998 UE8)
Classification: Outer Main-belt Asteroid          SPK-ID: 2020422
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1358674158962201 3.2376e-08  
a 3.227495164816205 2.1247e-08 au
q 2.788983736955083 1.0848e-07 au
i 1.779042114660081 4.6552e-06 deg
node 169.0933700758278 0.00011552 deg
peri 290.2783808659325 0.00011679 deg
M 152.3163058355641 1.7151e-05 deg
tp 2457704.432502552867
(2016-Nov-11.93250255)
0.00010051 TDB
period 2117.857949031535
5.80
2.0913e-05
5.726e-08
d
yr
n .1699830718885668 1.6785e-09 deg/d
Q 3.666006592677328 2.4134e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1388  
   data-arc span      9787 days (26.80 yr)  
   first obs. used      1991-08-05  
   last obs. used      2018-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50216  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-31 13:52:55  

Additional Information
 Earth MOID = 1.80662 au 
 Jupiter MOID = 1.49708 au 
 T_jup = 3.172 
[ 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 13.4   n/a MPO435889  
diameter diameter 12.824 km 0.433 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.056   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20422 (1998 UE8)          Discovered 1998-Oct-23 by Korlevic, K. at Visnjan
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 UE8 = 1991 PF32 = 2000 CF56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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