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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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1381209893573846 4.3508e-08  
a 2.623043322708579 1.2208e-08 au
q 2.260745983848789 1.1339e-07 au
i 13.60303105374047 5.9432e-06 deg
node 136.9614930321748 1.6669e-05 deg
peri 150.6037852654667 2.9238e-05 deg
M 89.50920894155549 2.0906e-05 deg
tp 2458614.691456696118
(2019-May-11.19145670)
9.0351e-05 TDB
period 1551.69593421483
4.25
1.0833e-05
2.966e-08
d
yr
n .2320042168455914 1.6197e-09 deg/d
Q 2.98534066156837 1.3894e-08 au
  Orbit Determination Parameters
   # obs. used (total)      645  
   data-arc span      8624 days (23.61 yr)  
   first obs. used      1997-03-03  
   last obs. used      2020-10-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55082  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:28:05  

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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