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58172 (1990 SD8)
Classification: Main-belt Asteroid          SPK-ID: 2058172
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2096821984410216 4.5401e-08  
a 3.052856412320483 1.445e-08 au
q 2.412726768260354 1.3975e-07 au
i 4.554140760856756 3.5345e-06 deg
node 112.9731188833566 6.3914e-05 deg
peri 269.4212798822556 6.4381e-05 deg
M 252.9421013905386 9.08e-06 deg
tp 2459975.894286182281
(2023-Jan-31.39428618)
5.14e-05 TDB
period 1948.309706568326
5.33
1.3833e-05
3.787e-08
d
yr
n .1847755512310666 1.3119e-09 deg/d
Q 3.692986056380612 1.748e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1030  
   data-arc span      11282 days (30.89 yr)  
   first obs. used      1990-09-14  
   last obs. used      2021-08-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55796  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:20:19  

Additional Information
 Earth MOID = 1.42057 au 
 Jupiter MOID = 1.78528 au 
 T_jup = 3.198 
[ 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 14.69   n/a MPCxxxxx  
diameter diameter 6.030 km 1.299 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58172 (1990 SD8)          Discovered 1990-Sep-22 by Elst, E. W. at La Silla
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 SD8 = 2001 SK289 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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