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JPL Small-Body Database Browser
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266891 (2009 WR49)
Classification: Outer Main-belt Asteroid          SPK-ID: 2266891
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05939528944584535 8.1633e-08  
a 3.360012945961734 5.8055e-08 au
q 3.160444004494549 2.9023e-07 au
i 8.268878934595023 9.7148e-06 deg
node .3311944492770113 4.9171e-05 deg
peri 157.3498878634441 8.868e-05 deg
M 97.90314323314973 7.166e-05 deg
tp 2457988.707727069067
(2017-Aug-23.20772707)
0.00045021 TDB
period 2249.623566534903
6.16
5.8304e-05
1.596e-07
d
yr
n .1600267730811996 4.1475e-09 deg/d
Q 3.559581887428919 6.1503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      5672 days (15.53 yr)  
   first obs. used      2002-10-05  
   last obs. used      2018-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63571  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 10:15:24  

Additional Information
 Earth MOID = 2.17116 au 
 Jupiter MOID = 1.4179 au 
 T_jup = 3.136 
[ 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 15.4   n/a MPO440312  
diameter diameter 4.534 km 1.321 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

266891 (2009 WR49)          Discovered 2009-Nov-19 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2009 WR49 = 2002 TW322 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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