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277861 (2006 JR18)
Classification: Main-belt Asteroid          SPK-ID: 2277861
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1420551906678207 9.3521e-08  
a 3.031475553660252 5.0531e-08 au
q 2.600838715880208 2.9753e-07 au
i 6.89374057941561 6.8676e-06 deg
node 82.83227724332065 7.6231e-05 deg
peri 78.82500110136959 8.6918e-05 deg
M 294.5635029262675 3.5069e-05 deg
tp 2459350.926607635932
(2021-May-16.42660764)
0.00018901 TDB
period 1927.877933422817
5.28
4.8203e-05
1.32e-07
d
yr
n .1867338142933377 4.6689e-09 deg/d
Q 3.462112391440296 5.7709e-08 au
  Orbit Determination Parameters
   # obs. used (total)      98  
   data-arc span      4954 days (13.56 yr)  
   first obs. used      2005-01-17  
   last obs. used      2018-08-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67552  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 07:28:10  

Additional Information
 Earth MOID = 1.62044 au 
 Jupiter MOID = 1.57062 au 
 T_jup = 3.217 
[ 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 MPO455061  
diameter diameter 2.804 km 0.717 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

277861 (2006 JR18)          Discovered 2006-May-02 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

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