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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2703210482799253 4.911e-08  
a 2.586418603036917 1.3358e-08 au
q 1.887255214973278 1.3303e-07 au
i 5.651330256191271 4.8337e-06 deg
node 87.77318845770385 4.0722e-05 deg
peri 353.2846457465147 4.158e-05 deg
M 28.70348538953147 6.7924e-06 deg
tp 2458879.362450439429
(2020-Jan-30.86245044)		 2.8577e-05 TDB
period 1519.310886813438
4.16		 1.177e-05
3.222e-08		 d
yr
n .2369495296351455 1.8357e-09 deg/d
Q 3.285581991100557 1.6969e-08 au
   Orbit Determination Parameters
   # obs. used (total)      709  
   data-arc span      8775 days (24.02 yr)  
   first obs. used      1996-03-27  
   last obs. used      2020-04-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46019  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:48:40  

Additional Information
 Earth MOID = .903248 au 
 Jupiter MOID = 1.97747 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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