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46940 (1998 SK74)
Classification: Main-belt Asteroid          SPK-ID: 2046940
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .150121132369095 3.7847e-08  
a 2.788642527540271 1.4984e-08 au
q 2.370008353533311 1.0336e-07 au
i 4.570323739169912 3.938e-06 deg
node 119.6952955232993 6.9189e-05 deg
peri 332.5039156967101 7.1641e-05 deg
M 225.3212440542889 1.9479e-05 deg
tp 2459836.832773304433
(2022-Sep-14.33277330)
9.4093e-05 TDB
period 1700.93491568884
4.66
1.371e-05
3.754e-08
d
yr
n .2116483098086138 1.7059e-09 deg/d
Q 3.207276701547232 1.7234e-08 au
  Orbit Determination Parameters
   # obs. used (total)      997  
   data-arc span      9447 days (25.86 yr)  
   first obs. used      1993-08-20  
   last obs. used      2019-07-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55136  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:53:52  

Additional Information
 Earth MOID = 1.38757 au 
 Jupiter MOID = 1.97589 au 
 T_jup = 3.309 
[ 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 14.66   n/a MPCxxxxx  
diameter diameter 4.917 km 0.402 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.073   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46940 (1998 SK74)          Discovered 1998-Sep-21 by Elst, E. W. at La Silla
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SK74 = 1993 QX7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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