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108543 (2001 LL9)
Classification: Main-belt Asteroid          SPK-ID: 2108543
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1277234884544829 4.2517e-08  
a 2.254569543619338 1.2017e-08 au
q 1.966608056545045 9.8159e-08 au
i 6.499200319792818 4.4716e-06 deg
node 150.7503470393729 3.7977e-05 deg
peri 78.67273203940896 4.31e-05 deg
M 241.2710363847754 2.4943e-05 deg
tp 2459408.300784463950
(2021-Jul-12.80078446)
8.8011e-05 TDB
period 1236.499316904649
3.39
9.8859e-06
2.707e-08
d
yr
n .2911445199186964 2.3277e-09 deg/d
Q 2.542531030693632 1.3552e-08 au
  Orbit Determination Parameters
   # obs. used (total)      589  
   data-arc span      8396 days (22.99 yr)  
   first obs. used      1997-01-31  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56702  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:09:13  

Additional Information
 Earth MOID = .969277 au 
 Jupiter MOID = 2.45675 au 
 T_jup = 3.605 
[ 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 16.2   n/a MPO453543  
diameter diameter 2.063 km 0.499 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.67 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.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
geometric albedo albedo 0.151   0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

108543 (2001 LL9)          Discovered 2001-Jun-15 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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