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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1255294202432433 8.8184e-08  
a 3.060435698529225 6.5038e-08 au
q 2.676260979601126 2.881e-07 au
i 16.93450975854146 9.7643e-06 deg
node 359.9914952298352 2.2738e-05 deg
peri 5.299308383011109 4.1027e-05 deg
M 302.4981653579603 3.5825e-05 deg
tp 2459312.857915741594
(2021-Apr-08.35791574)
0.00020056 TDB
period 1955.569772112321
5.35
6.2338e-05
1.707e-07
d
yr
n .1840895707909945 5.8682e-09 deg/d
Q 3.444610417457324 7.3203e-08 au
  Orbit Determination Parameters
   # obs. used (total)      197  
   data-arc span      7200 days (19.71 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54453  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:42:37  

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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