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441989 (2010 NA81)
Classification: Main-belt Asteroid          SPK-ID: 2441989
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 .1255294280051275 8.6078e-08  
a 3.060435684778188 6.0481e-08 au
q 2.676260943821501 2.8557e-07 au
i 16.93450955743037 9.1619e-06 deg
node 359.9914947725095 2.2708e-05 deg
peri 5.299310319408704 4.0956e-05 deg
M 302.4981680820558 3.539e-05 deg
tp 2459312.857898838719
(2021-Apr-08.35789884)
0.00019768 TDB
period 1955.569758932279
5.35
5.7969e-05
1.587e-07
d
yr
n .1840895720317113 5.457e-09 deg/d
Q 3.444610425734875 6.8073e-08 au
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      7569 days (20.72 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-05-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53153  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 07:18:58  

Additional Information
 Earth MOID = 1.67446 au 
 Jupiter MOID = 2.01287 au 
 T_jup = 3.156 
[ 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 15.5   n/a MPO437718  
diameter diameter 4.553 km 0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

441989 (2010 NA81)          Discovered 2010-Jul-16 by WISE at WISE
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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