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78144 (2002 NU20)
Classification: Main-belt Asteroid          SPK-ID: 2078144
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1090438615697642 4.4396e-08  
a 3.079997767699379 2.2199e-08 au
q 2.744142917483185 1.391e-07 au
i 13.06231453027714 4.7238e-06 deg
node 282.220298414496 2.3956e-05 deg
peri 130.4873941004745 3.6393e-05 deg
M 19.44311587520008 2.5576e-05 deg
tp 2458893.868039726613
(2020-Feb-14.36803973)
0.00014031 TDB
period 1974.349479004179
5.41
2.1345e-05
5.844e-08
d
yr
n .1823385392648805 1.9713e-09 deg/d
Q 3.415852617915573 2.462e-08 au
  Orbit Determination Parameters
   # obs. used (total)      831  
   data-arc span      7984 days (21.86 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50028  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:28:05  

Additional Information
 Earth MOID = 1.777 au 
 Jupiter MOID = 1.91867 au 
 T_jup = 3.179 
[ 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 14.3   n/a MPO375544  
diameter diameter 6.674 km 0.210 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.100   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78144 (2002 NU20)          Discovered 2002-Jul-09 by LINEAR at Socorro
Reference: 20040415/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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