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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07703719257761926 4.4045e-08  
a 2.776800201501699 2.2588e-08 au
q 2.562883309629041 1.2765e-07 au
i 5.367666710664448 4.6932e-06 deg
node 80.22909646365741 5.3862e-05 deg
peri 304.2901632755984 6.4436e-05 deg
M 24.63843248016997 3.3376e-05 deg
tp 2458884.828611576201
(2020-Feb-05.32861158)
0.00015668 TDB
period 1690.111571265035
4.63
2.0623e-05
5.646e-08
d
yr
n .2130036892952238 2.5991e-09 deg/d
Q 2.990717093374358 2.4329e-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 = 1.57169 au 
 Jupiter MOID = 2.38507 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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