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20486 (1999 NU56)
Classification: Main-belt Asteroid          SPK-ID: 2020486
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1412437034993405 3.4376e-08  
a 2.663567632690722 1.3092e-08 au
q 2.287355475728514 9.5829e-08 au
i 12.08580569800086 4.3296e-06 deg
node 243.9104176673334 1.6958e-05 deg
peri 57.86213989622806 2.3262e-05 deg
M 306.5537696663893 1.688e-05 deg
tp 2459236.226603277996
(2021-Jan-21.72660328)
7.4714e-05 TDB
period 1587.793501064036
4.35
1.1706e-05
3.205e-08
d
yr
n .2267297351694357 1.6716e-09 deg/d
Q 3.039779789652931 1.4941e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1870  
   data-arc span      15290 days (41.86 yr)  
   first obs. used      1978-11-29  
   last obs. used      2020-10-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45991  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:02:34  

Additional Information
 Earth MOID = 1.2973 au 
 Jupiter MOID = 2.18541 au 
 T_jup = 3.339 
[ 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 13.5   n/a MPO324498  
diameter diameter 6.653 km 0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.191   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20486 (1999 NU56)          Discovered 1999-Jul-12 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 NU56 = 1978 WA10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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