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101643 (1999 CU51)
Classification: Main-belt Asteroid          SPK-ID: 2101643
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1694387671067556 5.4719e-08  
a 3.157530230474786 2.3204e-08 au
q 2.622522201120828 1.8234e-07 au
i 15.15931208078715 4.4994e-06 deg
node 352.1427866431277 1.7656e-05 deg
peri 141.0350040164812 2.5704e-05 deg
M 335.3322110890322 1.4448e-05 deg
tp 2459340.925967690179
(2021-May-06.42596769)
8.193e-05 TDB
period 2049.366830198036
5.61
2.259e-05
6.185e-08
d
yr
n .1756640122672485 1.9364e-09 deg/d
Q 3.692538259828744 2.7135e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1007  
   data-arc span      8069 days (22.09 yr)  
   first obs. used      1999-02-10  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46256  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:49  

Additional Information
 Earth MOID = 1.65335 au 
 Jupiter MOID = 1.38247 au 
 T_jup = 3.130 
[ 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 14.48   n/a E2021B55  
diameter diameter 8.623 km 0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.249 h n/a LCDB (Rev. 2020-October); 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 0.050   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101643 (1999 CU51)          Discovered 1999-Feb-10 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 CU51 = 2003 WB87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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