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74250 (1998 SN65)
Classification: Main-belt Asteroid          SPK-ID: 2074250
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2288530396826648 4.7383e-08  
a 2.768072459719197 1.9961e-08 au
q 2.134590663250588 1.4084e-07 au
i 8.141396689476444 5.9304e-06 deg
node 57.32681705889161 3.0542e-05 deg
peri 268.0179733303567 3.3015e-05 deg
M 287.3220046892005 1.3195e-05 deg
tp 2459340.097940156096
(2021-May-05.59794016)
6.3268e-05 TDB
period 1682.149568564504
4.61
1.8196e-05
4.982e-08
d
yr
n .2140118849878571 2.3149e-09 deg/d
Q 3.401554256187806 2.453e-08 au
  Orbit Determination Parameters
   # obs. used (total)      652  
   data-arc span      8445 days (23.12 yr)  
   first obs. used      1997-05-03  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5459  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:49:17  

Additional Information
 Earth MOID = 1.14186 au 
 Jupiter MOID = 2.01554 au 
 T_jup = 3.285 
[ 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 14.9   n/a MPO432295  
diameter diameter 6.887 km 0.393 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.031   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74250 (1998 SN65)          Discovered 1998-Sep-20 by Elst, E. W. at La Silla
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SN65 = 1997 JD13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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