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91865 (1999 UD25)
Classification: Main-belt Asteroid          SPK-ID: 2091865
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1065254113008437 4.294e-08  
a 3.194645586923563 2.5776e-08 au
q 2.854334651816106 1.4658e-07 au
i 17.51912000753743 7.0492e-06 deg
node 16.15773328192885 1.5562e-05 deg
peri 271.4659646916122 3.892e-05 deg
M 20.71237002460147 3.3806e-05 deg
tp 2459276.505939645969
(2021-Mar-03.00593965)
0.00019608 TDB
period 2085.606894630701
5.71
2.5242e-05
6.911e-08
d
yr
n .1726116273046485 2.0891e-09 deg/d
Q 3.534956522031021 2.8522e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1010  
   data-arc span      8002 days (21.91 yr)  
   first obs. used      1999-09-12  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57559  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:02:52  

Additional Information
 Earth MOID = 1.90943 au 
 Jupiter MOID = 1.76939 au 
 T_jup = 3.115 
[ 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 13.73   n/a MPCxxxxx  
diameter diameter 7.633 km 0.232 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.110   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91865 (1999 UD25)          Discovered 1999-Oct-28 by CSS at Catalina
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 UD25 = 2000 XA43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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