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117836 (2005 JR61)
Classification: Main-belt Asteroid          SPK-ID: 2117836
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .003458131678769295 6.0273e-08  
a 2.560329614773553 1.934e-08 au
q 2.551475657824614 1.5258e-07 au
i 12.78550826696786 6.4081e-06 deg
node 46.91384509108955 2.5209e-05 deg
peri 287.5937929439046 0.00086192 deg
M 140.3270141829529 0.00086256 deg
tp 2458417.214701764501
(2018-Oct-25.71470176)
0.0035848 TDB
period 1496.381210612893
4.10
1.6955e-05
4.642e-08
d
yr
n .2405804065479745 2.7259e-09 deg/d
Q 2.569183571722493 1.9407e-08 au
  Orbit Determination Parameters
   # obs. used (total)      443  
   data-arc span      7412 days (20.29 yr)  
   first obs. used      2000-01-02  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57775  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:14:57  

Additional Information
 Earth MOID = 1.55093 au 
 Jupiter MOID = 2.41445 au 
 T_jup = 3.400 
[ 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 15.5   n/a MPO453649  
diameter diameter 2.517 km 0.289 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.193   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117836 (2005 JR61)          Discovered 2005-May-08 by Siding Spring Survey at Siding Spring
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2005 JR61 = 2004 BL142 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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