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359840 (2011 UW340)
Classification: Main-belt Asteroid          SPK-ID: 2359840
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04836806801565109 5.4925e-08  
a 2.870172167472286 4.4759e-08 au
q 2.731347484859358 1.5494e-07 au
i 1.590486675019626 6.2851e-06 deg
node 195.3148288628181 0.00020528 deg
peri 229.7167590339355 0.00021479 deg
M 241.2108835849948 6.478e-05 deg
tp 2459586.549771699988
(2022-Jan-07.04977170)
0.00032469 TDB
period 1776.071109704334
4.86
4.1546e-05
1.137e-07
d
yr
n .20269458696388 4.7414e-09 deg/d
Q 3.008996850085214 4.6924e-08 au
  Orbit Determination Parameters
   # obs. used (total)      167  
   data-arc span      4636 days (12.69 yr)  
   first obs. used      2006-09-17  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55504  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 00:46:22  

Additional Information
 Earth MOID = 1.74492 au 
 Jupiter MOID = 2.14295 au 
 T_jup = 3.296 
[ 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 17.3   n/a MPO437519  
rotation period rot_per 6.54 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:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) ArXiv:1901.08719.]

359840 (2011 UW340)          Discovered 2006-Sep-17 by Spacewatch at Kitt Peak
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29

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