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2866 Hardy (1961 TA)
Classification: Main-belt Asteroid          SPK-ID: 2002866
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2058626080916531 5.0319e-08  
a 2.910054786343443 1.3156e-08 au
q 2.310983318337183 1.4985e-07 au
i 8.224563078148451 4.2212e-06 deg
node 317.012935331625 3.1161e-05 deg
peri 25.26214730875874 3.3125e-05 deg
M 302.0317547276544 1.4366e-05 deg
tp 2459292.469730082776
(2021-Mar-18.96973008)
7.3182e-05 TDB
period 1813.218639549591
4.96
1.2296e-05
3.366e-08
d
yr
n .198541969593598 1.3464e-09 deg/d
Q 3.509126254349702 1.5865e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2250  
   data-arc span      25265 days (69.17 yr)  
   first obs. used      1951-09-09  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43519  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:08:50  

Additional Information
 Earth MOID = 1.30552 au 
 Jupiter MOID = 1.90777 au 
 T_jup = 3.237 
[ 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 11.8   n/a MPO395021  
diameter diameter 11.423 km 0.468 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.283   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2866 Hardy (1961 TA)          Discovered 1961-Oct-07 by Arend, S. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1961 TA = 1973 AR3 = 1981 RR2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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