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JPL Small-Body Database Browser
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58990 (1998 SA2)
Classification: Main-belt Asteroid          SPK-ID: 2058990
[ 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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2701798895474576 4.9336e-08  
a 2.585853150083227 1.3644e-08 au
q 1.887207631607795 1.3353e-07 au
i 5.651414884912225 4.8857e-06 deg
node 87.77311102642044 4.3994e-05 deg
peri 353.3251639209267 4.4767e-05 deg
M 293.8775558433609 7.1306e-06 deg
tp 2458879.465573480890
(2020-Jan-30.96557348)		 3.0321e-05 TDB
period 1518.812677511057
4.16		 1.2021e-05
3.291e-08		 d
yr
n .2370272551253308 1.8759e-09 deg/d
Q 3.284498668558659 1.733e-08 au
   Orbit Determination Parameters
   # obs. used (total)      598  
   data-arc span      8654 days (23.69 yr)  
   first obs. used      1996-03-27  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46213  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 06:05:43  

Additional Information
 Earth MOID = .903117 au 
 Jupiter MOID = 1.97848 au 
 T_jup = 3.363 
[ 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 15.8   n/a MPO452969  
diameter diameter 4.654 km 0.752 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58990 (1998 SA2)          Discovered 1998-Sep-17 by ODAS at Caussols
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SA2 = 1996 JL5 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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