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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1825188332413101 3.5959e-08  
a 2.38662698143444 8.1653e-09 au
q 1.951022609400796 8.5014e-08 au
i 2.598788235529836 4.1992e-06 deg
node 2.915768587556591 7.02e-05 deg
peri 351.1219039542912 7.0872e-05 deg
M 79.1772495338551 8.5762e-06 deg
tp 2458704.308114475938
(2019-Aug-08.80811448)
3.2106e-05 TDB
period 1346.713600389327
3.69
6.9113e-06
1.892e-08
d
yr
n .2673174161870245 1.3719e-09 deg/d
Q 2.822231353468084 9.6557e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1001  
   data-arc span      12140 days (33.24 yr)  
   first obs. used      1986-10-31  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51051  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:33:12  

Additional Information
 Earth MOID = .946106 au 
 Jupiter MOID = 2.61324 au 
 T_jup = 3.511 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456954.5 (2014-Oct-24.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1840145561412901 3.6079e-08  
q 1.946613160953295 8.5422e-08 au
tp 2457357.371220408380
(2015-Nov-30.87122041)
3.249e-05 TDB
node 3.002241340775156 7.004e-05 deg
peri 350.9724264982901 7.0696e-05 deg
i 2.603477732093813 4.2035e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1001  
   data-arc span      12140 days (33.24 yr)  
   first obs. used      1986-10-31  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51051  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:33:12  

Additional Information
 Jupiter MOID = 2.61324 au 
 T_jup = 3.511 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.301691955008994E-15 -3.072793840535953E-15 -6.648352922547816E-14 6.497219651671007E-15 -1.76311207765944E-14 -1.30490225015651E-15
q -3.072793840535953E-15 7.296848795298061E-15 1.063194624236512E-13 -1.596762650643087E-14 2.455227328439862E-14 3.146409491555246E-15
tp -6.648352922547816E-14 1.063194624236512E-13 1.055587797352207E-9 3.773860168619645E-12 3.195187154833918E-10 5.512491563458278E-13
node 6.497219651671007E-15 -1.596762650643087E-14 3.773860168619645E-12 4.905553225191593E-9 -4.898722511894364E-9 -3.251720973076809E-11
peri -1.76311207765944E-14 2.455227328439862E-14 3.195187154833918E-10 -4.898722511894364E-9 4.997888683372105E-9 3.264986240828582E-11
i -1.30490225015651E-15 3.146409491555246E-15 5.512491563458278E-13 -3.251720973076809E-11 3.264986240828582E-11 1.766935177242309E-11

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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