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20475 (1999 NU11)
Classification: Main-belt Asteroid          SPK-ID: 2020475
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2067908710334757 4.5896e-08  
a 2.757294767547619 1.3578e-08 au
q 2.187111380870402 1.2603e-07 au
i 6.353168719298071 4.8206e-06 deg
node 305.2956567361413 4.882e-05 deg
peri 111.2040081537015 5.0552e-05 deg
M 169.2977120133145 1.391e-05 deg
tp 2458414.048744728469
(2018-Oct-22.54874473)
6.252e-05 TDB
period 1672.334779547906
4.58
1.2353e-05
3.382e-08
d
yr
n .2152679023379046 1.5901e-09 deg/d
Q 3.327478154224836 1.6386e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1028  
   data-arc span      10815 days (29.61 yr)  
   first obs. used      1990-10-09  
   last obs. used      2020-05-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52786  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:21:58  

Additional Information
 Earth MOID = 1.2081 au 
 Jupiter MOID = 2.06696 au 
 T_jup = 3.303 
[ 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 14.5   n/a MPO337431  
diameter diameter 3.722 km 0.291 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.266   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20475 (1999 NU11)          Discovered 1999-Jul-13 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 NU11 = 1990 TE6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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