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74275 (1998 SB117)
Classification: Main-belt Asteroid          SPK-ID: 2074275
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2250326645753073 3.8717e-08  
a 2.796155739383938 2.0163e-08 au
q 2.166929362782832 1.1311e-07 au
i 6.555225485485279 5.0625e-06 deg
node 245.9072705390617 4.1345e-05 deg
peri 71.0472736783325 4.3314e-05 deg
M 266.060241668487 1.5297e-05 deg
tp 2459446.143319056017
(2021-Aug-19.64331906)
7.5228e-05 TDB
period 1707.813578719285
4.68
1.8473e-05
5.058e-08
d
yr
n .2107958412357684 2.2801e-09 deg/d
Q 3.425382115985044 2.4701e-08 au
  Orbit Determination Parameters
   # obs. used (total)      736  
   data-arc span      7904 days (21.64 yr)  
   first obs. used      1998-09-26  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54286  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:44:18  

Additional Information
 Earth MOID = 1.1643 au 
 Jupiter MOID = 1.9299 au 
 T_jup = 3.280 
[ 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 14.8   n/a MPO436302  
diameter diameter 5.932 km 0.438 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74275 (1998 SB117)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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