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249965 (2001 UD77)
Classification: Main-belt Asteroid          SPK-ID: 2249965
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .221240437526906 4.8921e-08  
a 2.763452996984496 2.0848e-08 au
q 2.152065446846607 1.4228e-07 au
i 4.078997765991448 6.8811e-06 deg
node 165.0581556269349 7.4112e-05 deg
peri 243.9645378614136 7.604e-05 deg
M 10.87143921000944 1.6213e-05 deg
tp 2458949.828811472973
(2020-Apr-10.32881147)
7.5321e-05 TDB
period 1677.940474793302
4.59
1.8988e-05
5.199e-08
d
yr
n .2145487312619637 2.4279e-09 deg/d
Q 3.374840547122386 2.546e-08 au
  Orbit Determination Parameters
   # obs. used (total)      181  
   data-arc span      6560 days (17.96 yr)  
   first obs. used      2001-10-17  
   last obs. used      2019-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55043  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:49:26  

Additional Information
 Earth MOID = 1.16593 au 
 Jupiter MOID = 2.02831 au 
 T_jup = 3.301 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8   n/a MPO454854  
diameter diameter 2.473 km 0.330 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249965 (2001 UD77)          Discovered 2001-Oct-17 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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