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17698 Racheldavis (1997 EW42)
Classification: Main-belt Asteroid          SPK-ID: 2017698
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05558485840270077 3.3987e-08  
a 3.11566506927468 1.8153e-08 au
q 2.942481267568806 1.1326e-07 au
i 11.20256530220479 3.6336e-06 deg
node 160.5135740273357 2.0335e-05 deg
peri 172.3841711469154 4.4835e-05 deg
M 297.4093543562283 4.1764e-05 deg
tp 2459549.746052112951
(2021-Dec-01.24605211)
0.00023415 TDB
period 2008.743918000681
5.50
1.7556e-05
4.807e-08
d
yr
n .1792164729281724 1.5663e-09 deg/d
Q 3.288848870980554 1.9162e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1759  
   data-arc span      8559 days (23.43 yr)  
   first obs. used      1997-03-10  
   last obs. used      2020-08-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48812  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:10:23  

Additional Information
 Earth MOID = 1.93099 au 
 Jupiter MOID = 1.9991 au 
 T_jup = 3.186 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457159.5 (2015-May-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05430818071368242 3.392e-08  
q 2.946408808979287 1.1274e-07 au
tp 2457548.923028588879
(2016-Jun-09.42302859)
0.00023364 TDB
node 160.5441132046201 2.0341e-05 deg
peri 173.7697848662017 4.5705e-05 deg
i 11.20040709127344 3.6331e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1759  
   data-arc span      8559 days (23.43 yr)  
   first obs. used      1997-03-10  
   last obs. used      2020-08-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48812  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:10:23  

Additional Information
 Jupiter MOID = 1.9991 au 
 T_jup = 3.186 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.150581998973141E-15 -3.783820792291553E-15 -6.80054575772125E-13 2.243524821348389E-15 -9.371893539144558E-14 3.844706376148251E-16
q -3.783820792291553E-15 1.271073549551855E-14 3.356956938003915E-12 -7.077216773084494E-15 4.94313437771121E-13 1.167325103626746E-16
tp -6.80054575772125E-13 3.356956938003915E-12 5.458737916266598E-8 -4.669947558104743E-11 9.584875229186002E-9 9.529687790619419E-12
node 2.243524821348389E-15 -7.077216773084494E-15 -4.669947558104743E-11 4.137569622996373E-10 -4.13774513823265E-10 5.633883766638471E-12
peri -9.371893539144558E-14 4.94313437771121E-13 9.584875229186002E-9 -4.13774513823265E-10 2.088986436829181E-9 -3.850551989787862E-12
i 3.844706376148251E-16 1.167325103626746E-16 9.529687790619419E-12 5.633883766638471E-12 -3.850551989787862E-12 1.319920241271808E-11

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 13.29   n/a E2021B10  
diameter diameter 11.716 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17698 Racheldavis           Discovered 1997 Mar. 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Rachel Michelle Davis (b. 1993) is a finalist in the 2012 Intel Science Talent Search, a science competition for high-school seniors, for her materials science project. She attends the Smithtown High School East, St. James, New York.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120506/MPCPages.arcLast Updated: 2012-05-09

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1939-Nov-05 12:17 00:02 Jupiter 1.98710155715186 1.98710121828906 1.98710189601466 4.79237672553735 4.7025901452487 2429573.011470539 1.88323802901369 145.537110639904 15.6385126085271 89.6286933169406 4751266.99803484 T 31 CATAB v2.0f-lin.ifort 2021-Apr-13 02:10:28 2021-Apr-13 02:10

Alternate Designations
 1997 EW42 = 1998 HU124 = 1999 RZ46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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