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58621 (1997 UR23)
Classification: Main-belt Asteroid          SPK-ID: 2058621
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1825188327826848 3.5894e-08  
a 2.386626981593216 8.1401e-09 au
q 1.95102261062516 8.4825e-08 au
i 2.59878835681193 4.1787e-06 deg
node 2.915770718190126 7.0118e-05 deg
peri 351.1219014696959 7.0778e-05 deg
M 79.17724977237147 8.5393e-06 deg
tp 2458704.308113554122
(2019-Aug-08.80811355)
3.1957e-05 TDB
period 1346.713600523717
3.69
6.8899e-06
1.886e-08
d
yr
n .2673174161603487 1.3676e-09 deg/d
Q 2.822231352561272 9.6258e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1008  
   data-arc span      12433 days (34.04 yr)  
   first obs. used      1986-10-31  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51164  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:40:35  

Additional Information
 Earth MOID = .946106 au 
 Jupiter MOID = 2.61324 au 
 T_jup = 3.511 
[ 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 15.5   n/a MPO432140  
diameter diameter 4.481 km 0.207 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58621 (1997 UR23)          Discovered 1997-Oct-27 by Skiff, B. A. at Anderson Mesa
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 UR23 = 1986 UD4 = 1995 BZ8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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