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21468 Saylor (1998 HD97)
Classification: Main-belt Asteroid          SPK-ID: 2021468
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1068337330342984 3.3727e-08  
a 2.677693403018481 1.0779e-08 au
q 2.391625420852702 9.2999e-08 au
i 3.333547100944263 3.8384e-06 deg
node 55.19069928675689 5.7163e-05 deg
peri 219.6294723542486 6.012e-05 deg
M 58.50728112965942 1.7846e-05 deg
tp 2459136.395949298456
(2020-Oct-13.89594930)
7.9571e-05 TDB
period 1600.44111509888
4.38
9.6639e-06
2.646e-08
d
yr
n .2249379852864866 1.3582e-09 deg/d
Q 2.963761385184259 1.1931e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1697  
   data-arc span      8975 days (24.57 yr)  
   first obs. used      1996-12-08  
   last obs. used      2021-07-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52688  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:04:02  

Additional Information
 Earth MOID = 1.37634 au 
 Jupiter MOID = 2.12468 au 
 T_jup = 3.367 
[ 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 14.50   n/a E2020-QM5  
diameter diameter 3.875 km 0.550 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.204   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21468 Saylor           Discovered 1998 Apr. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Charlotte Saylor mentored a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors. She teaches at the Baltimore Polytechnic Institute, Baltimore, Maryland.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050224/MPCPages.arcLast Updated: 2005-02-28

Alternate Designations
 1998 HD97 = 1999 RV183 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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