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249964 (2001 UN71)
Classification: Main-belt Asteroid          SPK-ID: 2249964
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07680935329046888 4.4062e-08  
a 2.77638319898926 2.2706e-08 au
q 2.563131000988371 1.2764e-07 au
i 5.367751371486399 4.6932e-06 deg
node 80.2279742558251 5.3863e-05 deg
peri 304.1880579894595 6.4492e-05 deg
M 299.508733042597 3.3468e-05 deg
tp 2458884.427669835518
(2020-Feb-04.92766984)
0.00015708 TDB
period 1689.73086995787
4.63
2.0728e-05
5.675e-08
d
yr
n .21305167964942 2.6136e-09 deg/d
Q 2.989635396990148 2.445e-08 au
  Orbit Determination Parameters
   # obs. used (total)      278  
   data-arc span      6549 days (17.93 yr)  
   first obs. used      2001-10-19  
   last obs. used      2019-09-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52356  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:49:26  

Additional Information
 Earth MOID = 1.57119 au 
 Jupiter MOID = 2.38686 au 
 T_jup = 3.324 
[ 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 16.4   n/a MPO450109  
diameter diameter 2.646 km 0.593 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249964 (2001 UN71)          Discovered 2001-Oct-19 by Spacewatch at Kitt Peak
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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