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JPL Small-Body Database Browser
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20733 (1999 XE168)
Classification: Main-belt Asteroid          SPK-ID: 2020733
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1228903872862946 4.6142e-08  
a 3.181725131301466 2.4479e-08 au
q 2.790721697677293 1.4894e-07 au
i 13.57648361099592 4.7599e-06 deg
node 57.9659014848451 2.1326e-05 deg
peri 147.7863680869702 2.8184e-05 deg
M 30.73472017308 1.9026e-05 deg
tp 2458423.522043171320
(2018-Nov-01.02204317)
0.00010937 TDB
period 2072.967123160249
5.68
2.3923e-05
6.55e-08
d
yr
n .1736641145814113 2.0042e-09 deg/d
Q 3.57272856492564 2.7487e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1553  
   data-arc span      17399 days (47.64 yr)  
   first obs. used      1972-01-14  
   last obs. used      2019-09-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42968  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:30:29  

Additional Information
 Earth MOID = 1.79502 au 
 Jupiter MOID = 1.43809 au 
 T_jup = 3.144 
[ 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 12.7   n/a MPO492970  
rotation period rot_per 3.871 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

20733 (1999 XE168)          Discovered 1999-Dec-10 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XE168 = 1972 AO = 1996 JV1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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