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91887 (1999 UZ50)
Classification: Main-belt Asteroid          SPK-ID: 2091887
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2610849047312276 4.0028e-08  
a 3.133452299831504 2.5591e-08 au
q 2.31535520465015 1.3697e-07 au
i 6.013403879434936 4.9194e-06 deg
node 42.15938088277812 3.7126e-05 deg
peri 263.3508895705513 3.83e-05 deg
M 24.01674519179538 9.85e-06 deg
tp 2459261.341081410310
(2021-Feb-15.84108141)
5.452e-05 TDB
period 2025.970226344858
5.55
2.482e-05
6.795e-08
d
yr
n .1776926409473903 2.1769e-09 deg/d
Q 3.951549395012858 3.2273e-08 au
  Orbit Determination Parameters
   # obs. used (total)      592  
   data-arc span      7562 days (20.70 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51757  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:48:18  

Additional Information
 Earth MOID = 1.30953 au 
 Jupiter MOID = 1.38728 au 
 T_jup = 3.151 
[ 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 15.14   n/a E2021B10  
diameter diameter 4.535 km 0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.071   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91887 (1999 UZ50)          Discovered 1999-Oct-30 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 UZ50 = 2004 PG27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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