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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2058625603235661 6.0382e-08  
a 2.91005478526298 1.3875e-08 au
q 2.310983456486898 1.7742e-07 au
i 8.224563003277291 4.4075e-06 deg
node 317.0129007066928 3.2389e-05 deg
peri 25.26216644399979 3.4805e-05 deg
M 302.0317694093695 1.7042e-05 deg
tp 2459292.469655972505
(2021-Mar-18.96965597)
8.6786e-05 TDB
period 1813.218638539757
4.96
1.2968e-05
3.55e-08
d
yr
n .1985419697041718 1.4199e-09 deg/d
Q 3.509126114039062 1.6731e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2049  
   data-arc span      24716 days (67.67 yr)  
   first obs. used      1951-09-09  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43521  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 22:29:33  

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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