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289728 (2005 JY21)
Classification: Main-belt Asteroid          SPK-ID: 2289728
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06437269149204135 1.6478e-07  
a 2.568158382129919 4.0164e-08 au
q 2.402839114894369 4.4311e-07 au
i 28.1729587992226 1.8227e-05 deg
node 218.5363400681697 1.2431e-05 deg
peri 330.8659920359481 0.00010222 deg
M 262.713134811482 0.00011264 deg
tp 2459406.740147710963
(2021-Jul-11.24014771)
0.00047621 TDB
period 1503.249723305986
4.12
3.5264e-05
9.655e-08
d
yr
n .2394811683106641 5.6179e-09 deg/d
Q 2.733477649365468 4.2749e-08 au
  Orbit Determination Parameters
   # obs. used (total)      204  
   data-arc span      14586 days (39.93 yr)  
   first obs. used      1980-02-20  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59366  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 15:55:44  

Additional Information
 Earth MOID = 1.41085 au 
 Jupiter MOID = 2.2641 au 
 T_jup = 3.262 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO503274  
diameter diameter 2.581 km 0.696 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.096   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

289728 (2005 JY21)          Discovered 2005-May-05 by Lowe, A. at Mayhill
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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