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78143 (2002 NB20)
Classification: Main-belt Asteroid          SPK-ID: 2078143
[ 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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1381209836372676 4.1883e-08  
a 2.623043324156459 1.1909e-08 au
q 2.2607460001008 1.0842e-07 au
i 13.60302875879657 5.4607e-06 deg
node 136.961490007907 1.6382e-05 deg
peri 150.6037811844499 2.6178e-05 deg
M 89.50921452038146 1.8294e-05 deg
tp 2458614.691432330451
(2019-May-11.19143233)		 7.8796e-05 TDB
period 1551.695935499599
4.25		 1.0567e-05
2.893e-08		 d
yr
n .2320042166534973 1.58e-09 deg/d
Q 2.985340648212118 1.3554e-08 au
   Orbit Determination Parameters
   # obs. used (total)      662  
   data-arc span      8659 days (23.71 yr)  
   first obs. used      1997-03-03  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54598  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:06:07  

Additional Information
 Earth MOID = 1.25419 au 
 Jupiter MOID = 2.26981 au 
 T_jup = 3.351 
[ 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 15.3   n/a MPO502627  
diameter diameter 2.450 km 0.368 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.169   0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78143 (2002 NB20)          Discovered 2002-Jul-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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