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243961 (2001 QL229)
Classification: Main-belt Asteroid          SPK-ID: 2243961
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2193535854775145 9.3933e-08  
a 2.785853378745 3.0215e-08 au
q 2.174766451502636 2.6265e-07 au
i 6.777921530543279 7.4435e-06 deg
node 298.0284095318601 9.837e-05 deg
peri 22.45233695447879 0.00010151 deg
M 302.4176314240099 2.4778e-05 deg
tp 2458872.158209787503
(2020-Jan-23.65820979)
0.00011782 TDB
period 1698.383688306267
4.65
2.7631e-05
7.565e-08
d
yr
n .2119662373577164 3.4484e-09 deg/d
Q 3.396940305987364 3.6843e-08 au
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      6051 days (16.57 yr)  
   first obs. used      2001-08-24  
   last obs. used      2018-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59185  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 09:35:05  

Additional Information
 Earth MOID = 1.16266 au 
 Jupiter MOID = 1.92735 au 
 T_jup = 3.286 
[ 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 16.6   n/a MPO440241  
diameter diameter 2.856 km 0.397 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243961 (2001 QL229)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa
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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