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79748 (1998 SG157)
Classification: Main-belt Asteroid          SPK-ID: 2079748
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1356741232612012 4.4115e-08  
a 2.378862471273461 1.1077e-08 au
q 2.056112391124459 1.0666e-07 au
i 2.186391086735486 4.9057e-06 deg
node 35.49199837045455 0.00012435 deg
peri 350.4128159833038 0.00012577 deg
M 316.7618088481665 2.1952e-05 deg
tp 2459161.459808151102
(2020-Nov-07.95980815)
8.2349e-05 TDB
period 1340.146971711129
3.67
9.3601e-06
2.563e-08
d
yr
n .2686272532783058 1.8762e-09 deg/d
Q 2.701612551422461 1.2579e-08 au
  Orbit Determination Parameters
   # obs. used (total)      491  
   data-arc span      8991 days (24.62 yr)  
   first obs. used      1995-12-20  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54472  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:36:17  

Additional Information
 Earth MOID = 1.06022 au 
 Jupiter MOID = 2.74063 au 
 T_jup = 3.526 
[ 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 16.3   n/a MPO436338  
diameter diameter 3.171 km 0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.048   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79748 (1998 SG157)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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