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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2090993974599833 5.7079e-08  
a 3.054263786660693 1.5868e-08 au
q 2.415619069186095 1.7297e-07 au
i 4.553969463117399 4.1024e-06 deg
node 112.969733991292 7.4286e-05 deg
peri 269.5610182417813 7.518e-05 deg
M 105.7037975208693 9.9036e-06 deg
tp 2458028.038438895393
(2017-Oct-01.53843890)
5.3025e-05 TDB
period 1949.657125203761
5.34
1.5194e-05
4.16e-08
d
yr
n .1846478518433727 1.439e-09 deg/d
Q 3.69290850413529 1.9186e-08 au
  Orbit Determination Parameters
   # obs. used (total)      919  
   data-arc span      10463 days (28.65 yr)  
   first obs. used      1990-09-14  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56491  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:12:43  

Additional Information
 Earth MOID = 1.4235 au 
 Jupiter MOID = 1.78021 au 
 T_jup = 3.197 
[ 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 14.7   n/a MPO436189  
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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