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102558 (1999 UJ24)
Classification: Main-belt Asteroid          SPK-ID: 2102558
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2383192421641606 5.7067e-08  
a 2.784234007096209 1.8277e-08 au
q 2.120697468517356 1.5858e-07 au
i 6.854314887836072 4.6375e-06 deg
node 257.3899199757612 4.9919e-05 deg
peri 129.0502676630446 5.067e-05 deg
M 156.523531648972 1.2594e-05 deg
tp 2458262.707620771767
(2018-May-24.20762077)
5.4569e-05 TDB
period 1696.903038948958
4.65
1.6709e-05
4.575e-08
d
yr
n .2121511905730216 2.089e-09 deg/d
Q 3.447770545675062 2.2633e-08 au
  Orbit Determination Parameters
   # obs. used (total)      682  
   data-arc span      12181 days (33.35 yr)  
   first obs. used      1987-01-10  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52089  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:54:02  

Additional Information
 Earth MOID = 1.13351 au 
 Jupiter MOID = 2.05133 au 
 T_jup = 3.280 
[ 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 14.68   n/a E2021B55  
diameter diameter 6.421 km 0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.074   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102558 (1999 UJ24)          Discovered 1999-Oct-28 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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