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66441 (1999 NX56)
Classification: Main-belt Asteroid          SPK-ID: 2066441
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .139588733827963 4.6737e-08  
a 2.545713969159947 1.2023e-08 au
q 2.190360979516752 1.1866e-07 au
i 13.4580169582392 5.3237e-06 deg
node 282.3542352792981 1.524e-05 deg
peri 348.5130571231426 2.1239e-05 deg
M 140.4424535014053 1.5006e-05 deg
tp 2458621.726360820304
(2019-May-18.22636082)
6.0531e-05 TDB
period 1483.586372283119
4.06
1.051e-05
2.877e-08
d
yr
n .2426552351286358 1.7191e-09 deg/d
Q 2.901066958803141 1.3701e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1013  
   data-arc span      7860 days (21.52 yr)  
   first obs. used      1999-07-12  
   last obs. used      2021-01-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51281  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:22:12  

Additional Information
 Earth MOID = 1.17367 au 
 Jupiter MOID = 2.23597 au 
 T_jup = 3.391 
[ 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 14.70   n/a MPCxxxxx  
diameter diameter 3.189 km 0.852 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.209   0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66441 (1999 NX56)          Discovered 1999-Jul-12 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

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