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146828 (2001 YL155)
Classification: Main-belt Asteroid          SPK-ID: 2146828
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02568961722120048 5.5192e-08  
a 3.033956153274032 2.8227e-08 au
q 2.956014981030516 1.6638e-07 au
i 13.54929218429223 6.0084e-06 deg
node 40.23229600749439 1.9504e-05 deg
peri .8323280682270525 9.7268e-05 deg
M 224.9893453402222 9.7409e-05 deg
tp 2459724.398904429985
(2022-May-24.89890443)
0.00052615 TDB
period 1930.244736991364
5.28
2.6937e-05
7.375e-08
d
yr
n .1865048473392681 2.6027e-09 deg/d
Q 3.111897325517547 2.8952e-08 au
  Orbit Determination Parameters
   # obs. used (total)      625  
   data-arc span      7713 days (21.12 yr)  
   first obs. used      1998-03-25  
   last obs. used      2019-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56763  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:22:28  

Additional Information
 Earth MOID = 1.96384 au 
 Jupiter MOID = 2.00691 au 
 T_jup = 3.199 
[ 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 14.5   n/a MPO436736  
rotation period rot_per 4.062 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.]

146828 (2001 YL155)          Discovered 2001-Dec-20 by NEAT at Palomar
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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