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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .152538621102548 3.8951e-08  
a 2.782992297289183 1.4434e-08 au
q 2.358478489721679 1.0755e-07 au
i 4.565811851771917 4.1381e-06 deg
node 119.7384920462017 6.9619e-05 deg
peri 331.7314339176331 7.1936e-05 deg
M 99.06126498335621 1.8548e-05 deg
tp 2458133.875215834644
(2018-Jan-15.37521583)
8.6125e-05 TDB
period 1695.767990927153
4.64
1.3193e-05
3.612e-08
d
yr
n .2122931921855488 1.6516e-09 deg/d
Q 3.207506104856687 1.6636e-08 au
  Orbit Determination Parameters
   # obs. used (total)      970  
   data-arc span      9395 days (25.72 yr)  
   first obs. used      1993-08-20  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55267  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:34:34  

Additional Information
 Earth MOID = 1.37636 au 
 Jupiter MOID = 1.98081 au 
 T_jup = 3.311 
[ 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 MPO302329  
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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