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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457311.5 (2015-Oct-16.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1384060912368295 4.1844e-08  
q 2.260584403204661 1.085e-07 au
tp 2457064.795061595857
(2015-Feb-11.29506160)
7.9545e-05 TDB
node 137.0228101893111 1.6385e-05 deg
peri 151.0382803254261 2.6162e-05 deg
i 13.60063377635192 5.4605e-06 deg
  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
 Jupiter MOID = 2.26981 au 
 T_jup = 3.351 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.750957561717632E-15 -4.520012944600551E-15 1.026669312683847E-12 -7.526797873365072E-16 2.327456752352848E-13 -1.464221395741367E-15
q -4.520012944600551E-15 1.177159212230889E-14 -2.819439930135149E-12 2.43566636127817E-15 -6.401304031525077E-13 4.475041583313521E-15
tp 1.026669312683847E-12 -2.819439930135149E-12 6.327471373775059E-9 -4.473538930785767E-12 1.633431333263646E-9 3.843268261502352E-13
node -7.526797873365072E-16 2.43566636127817E-15 -4.473538930785767E-12 2.684842394960345E-10 -2.611973494292537E-10 1.8903463001569E-11
peri 2.327456752352848E-13 -6.401304031525077E-13 1.633431333263646E-9 -2.611973494292537E-10 6.844411871954885E-10 -1.80869243042441E-11
i -1.464221395741367E-15 4.475041583313521E-15 3.843268261502352E-13 1.8903463001569E-11 -1.80869243042441E-11 2.981735225871322E-11

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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