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74268 (1998 SK109)
Classification: Main-belt Asteroid          SPK-ID: 2074268
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2647250544036033 4.2573e-08  
a 2.678825542206881 2.0206e-08 au
q 1.969673304808402 1.0862e-07 au
i 12.27983189452587 5.4496e-06 deg
node 354.2568623628879 2.3648e-05 deg
peri 33.80292808013476 2.6982e-05 deg
M 244.0863107222946 1.3549e-05 deg
tp 2459116.140833352489
(2020-Sep-23.64083335)
6.3846e-05 TDB
period 1601.456231473773
4.38
1.8119e-05
4.961e-08
d
yr
n .224795403661268 2.5434e-09 deg/d
Q 3.38797777960536 2.5555e-08 au
  Orbit Determination Parameters
   # obs. used (total)      456  
   data-arc span      9930 days (27.19 yr)  
   first obs. used      1991-02-07  
   last obs. used      2018-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5644  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 02:29:28  

Additional Information
 Earth MOID = .98431 au 
 Jupiter MOID = 2.13961 au 
 T_jup = 3.295 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO439561  
diameter diameter 5.030 km 0.858 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.044   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

74268 (1998 SK109)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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