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160391 (2004 NJ20)
Classification: Main-belt Asteroid          SPK-ID: 2160391
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2229458477428067 5.4746e-08  
a 2.467257512819455 1.5568e-08 au
q 1.917192695024113 1.3027e-07 au
i 13.16450426644294 5.0015e-06 deg
node 136.4367598806729 2.1452e-05 deg
peri 93.60646860203939 2.5588e-05 deg
M 133.3299168603055 1.2867e-05 deg
tp 2458676.241772881979
(2019-Jul-11.74177288)
5.1672e-05 TDB
period 1415.533484208422
3.88
1.3398e-05
3.668e-08
d
yr
n .2543210768350809 2.4071e-09 deg/d
Q 3.017322330614797 1.9039e-08 au
  Orbit Determination Parameters
   # obs. used (total)      602  
   data-arc span      6990 days (19.14 yr)  
   first obs. used      2001-09-19  
   last obs. used      2020-11-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52462  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:01:09  

Additional Information
 Earth MOID = .959442 au 
 Jupiter MOID = 2.13102 au 
 T_jup = 3.416 
[ 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 16.47   n/a MPCxxxxx  
diameter diameter 2.744 km 0.859 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.042   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

160391 (2004 NJ20)          Discovered 2004-Jul-14 by LINEAR at Socorro
Reference: 20070730/Numbers.arcLast Updated: 2007-08-06

[ show close-approach data ]
Alternate Designations
 2004 NJ20 = 2001 SD352 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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