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78170 (2002 NL31)
Classification: Main-belt Asteroid          SPK-ID: 2078170
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1176271762724631 3.5531e-08  
a 2.582298027163777 1.3949e-08 au
q 2.27854960193455 8.9913e-08 au
i 1.61128820898101 5.4326e-06 deg
node 181.6250853884916 0.00012925 deg
peri 119.5439252585323 0.00013155 deg
M 107.2704289017157 2.367e-05 deg
tp 2458548.867186323540
(2019-Mar-06.36718632)
9.9942e-05 TDB
period 1515.68157774864
4.15
1.2281e-05
3.362e-08
d
yr
n .237516906773213 1.9245e-09 deg/d
Q 2.886046452393005 1.559e-08 au
  Orbit Determination Parameters
   # obs. used (total)      495  
   data-arc span      10985 days (30.08 yr)  
   first obs. used      1990-09-25  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59142  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:54  

Additional Information
 Earth MOID = 1.26358 au 
 Jupiter MOID = 2.30289 au 
 T_jup = 3.414 
[ 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 16.2   n/a MPO449492  

78170 (2002 NL31)          Discovered 2002-Jul-08 by NEAT at Palomar
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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