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17781 Kepping (1998 FH23)
Classification: Main-belt Asteroid          SPK-ID: 2017781
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06113285600168814 4.1103e-08  
a 2.434080526239298 1.0464e-08 au
q 2.285278231932197 9.6047e-08 au
i 3.086889622119704 3.6129e-06 deg
node 113.9720908209386 7.8502e-05 deg
peri 223.840772414452 8.6656e-05 deg
M 136.3193072673262 3.8918e-05 deg
tp 2458475.262519625079
(2018-Dec-22.76251963)
0.00014875 TDB
period 1387.077859515301
3.80
8.9441e-06
2.449e-08
d
yr
n .2595384228292693 1.6735e-09 deg/d
Q 2.582882820546398 1.1103e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1885  
   data-arc span      10467 days (28.66 yr)  
   first obs. used      1991-06-07  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51359  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:12:06  

Additional Information
 Earth MOID = 1.27666 au 
 Jupiter MOID = 2.62163 au 
 T_jup = 3.501 
[ 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 14.1   n/a MPO347663  
diameter diameter 3.525 km 0.202 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.357   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

17781 Kepping           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Ashley Deane Kepping (b. 1985) was awarded first place in the 2003 Intel International Science and Engineering Fair for her biochemistry team project. She attends the Northport High School, Northport, New York, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040614/MPCPages.arcLast Updated: 2009-12-11

[ show close-approach data ]
Alternate Designations
 1998 FH23 = 1996 VT38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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