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249039 (2007 TW61)
Classification: Main-belt Asteroid          SPK-ID: 2249039
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 .20553358855275 4.9254e-08  
a 3.013823772812211 3.395e-08 au
q 2.394381757520529 1.5318e-07 au
i 1.625341140164315 7.4021e-06 deg
node 40.79509557554628 0.00020956 deg
peri 267.0398766137099 0.00021041 deg
M 134.2024063952707 1.759e-05 deg
tp 2457888.085072643335
(2017-May-14.58507264)
9.4134e-05 TDB
period 1911.063897714411
5.23
3.2292e-05
8.841e-08
d
yr
n .188376746811319 3.183e-09 deg/d
Q 3.633265788103893 4.0928e-08 au
  Orbit Determination Parameters
   # obs. used (total)      216  
   data-arc span      6820 days (18.67 yr)  
   first obs. used      2000-05-05  
   last obs. used      2019-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62469  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 09:50:07  

Additional Information
 Earth MOID = 1.37953 au 
 Jupiter MOID = 1.63715 au 
 T_jup = 3.216 
[ 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 16.1   n/a MPO427414  
diameter diameter 4.063 km 1.276 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.035   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249039 (2007 TW61)          Discovered 2007-Oct-07 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

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