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JPL Small-Body Database Browser
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39317 (2001 UU168)
Classification: Main-belt Asteroid          SPK-ID: 2039317
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .260819180230499 1.2887e-07  
a 2.546233007066164 1.449e-08 au
q 1.882126601487328 3.3443e-07 au
i 11.50143470879766 8.3128e-06 deg
node 352.4875749293082 2.852e-05 deg
peri 61.92386477979494 3.347e-05 deg
M 216.3537624052651 1.7307e-05 deg
tp 2459592.657721846909
(2022-Jan-13.15772185)
7.4843e-05 TDB
period 1484.040121303539
4.06
1.2668e-05
3.468e-08
d
yr
n .2425810426767884 2.0707e-09 deg/d
Q 3.210339412644999 1.8269e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1400  
   data-arc span      24364 days (66.70 yr)  
   first obs. used      1952-10-11  
   last obs. used      2019-06-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4174  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:10:02  

Additional Information
 Earth MOID = .922558 au 
 Jupiter MOID = 2.32084 au 
 T_jup = 3.367 
[ 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 13.6   n/a MPO474250  
diameter diameter 10.503 km 0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 86.895 h n/a LCDB (Rev. 2019-August); 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.]
geometric albedo albedo 0.068   0.001 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39317 (2001 UU168)          Discovered 2001-Oct-19 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2001 UU168 = 1952 TE = 1978 EQ6 = 1982 DF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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