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JPL Small-Body Database Browser
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138831 (2000 UD68)
Classification: Main-belt Asteroid          SPK-ID: 2138831
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1826638184920204 1.018e-07  
a 3.193724829111587 3.1298e-08 au
q 2.610346856613289 3.2446e-07 au
i 12.28986548628385 7.5329e-06 deg
node 252.5962266594233 3.5463e-05 deg
peri 256.8423806769708 4.055e-05 deg
M 62.4420878759963 2.1337e-05 deg
tp 2458638.907358216925
(2019-Jun-04.40735822)
0.00012214 TDB
period 2084.705292052665
5.71
3.0644e-05
8.39e-08
d
yr
n .1726862791457362 2.5384e-09 deg/d
Q 3.777102801609885 3.7015e-08 au
  Orbit Determination Parameters
   # obs. used (total)      529  
   data-arc span      21401 days (58.59 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53855  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:35:28  

Additional Information
 Earth MOID = 1.65604 au 
 Jupiter MOID = 1.58017 au 
 T_jup = 3.134 
[ 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 14.3   n/a MPO436692  
diameter diameter 8.951 km 0.464 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.286890 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.051   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

138831 (2000 UD68)          Discovered 2000-Oct-25 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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