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243633 (1999 RL239)
Classification: Main-belt Asteroid          SPK-ID: 2243633
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2851307131282335 5.3287e-08  
a 3.172396991000331 3.6038e-08 au
q 2.267849174630545 1.7208e-07 au
i 24.33814967751363 1.1389e-05 deg
node 337.0549591319837 1.4906e-05 deg
peri 95.96592958534879 2.8158e-05 deg
M 141.2670688171313 2.0215e-05 deg
tp 2457790.624699674351
(2017-Feb-06.12469967)
0.00010922 TDB
period 2063.857561132303
5.65
3.5168e-05
9.628e-08
d
yr
n .1744306422980526 2.9722e-09 deg/d
Q 4.076944807370118 4.6313e-08 au
  Orbit Determination Parameters
   # obs. used (total)      336  
   data-arc span      6795 days (18.60 yr)  
   first obs. used      1999-09-08  
   last obs. used      2018-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50848  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 09:33:41  

Additional Information
 Earth MOID = 1.42618 au 
 Jupiter MOID = 1.78295 au 
 T_jup = 3.004 
[ 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 14.8   n/a MPO450092  
diameter diameter 6.726 km 0.325 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.034 h n/a LCDB (Rev. 2019-January); 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 0.062   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243633 (1999 RL239)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

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