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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1379929904744946 4.0043e-08  
a 2.623611998860999 1.1561e-08 au
q 2.261571933293403 1.0276e-07 au
i 13.60303474515523 4.5177e-06 deg
node 136.959275567408 1.5601e-05 deg
peri 150.6853121691557 2.2053e-05 deg
M 135.824661055161 1.4943e-05 deg
tp 2458614.869120078239
(2019-May-11.36912008)
6.3616e-05 TDB
period 1552.200573401121
4.25
1.0259e-05
2.809e-08
d
yr
n .2319287894677052 1.533e-09 deg/d
Q 2.985652064428594 1.3156e-08 au
  Orbit Determination Parameters
   # obs. used (total)      725  
   data-arc span      8741 days (23.93 yr)  
   first obs. used      1997-03-03  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53718  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:35:19  

Additional Information
 Earth MOID = 1.25303 au 
 Jupiter MOID = 2.26905 au 
 T_jup = 3.350 
[ 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 15.33   n/a MPCxxxxx  
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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