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22631 Dillard (1998 KV47)
Classification: Main-belt Asteroid          SPK-ID: 2022631
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09878467497567463 2.8129e-08  
a 2.386962467938963 7.812e-09 au
q 2.151167156364478 6.5948e-08 au
i 5.061308979621068 4.1214e-06 deg
node 218.7223734203195 3.1074e-05 deg
peri 238.8413755016126 3.7274e-05 deg
M 192.6778652608134 2.1467e-05 deg
tp 2459826.562524849051
(2022-Sep-04.06252485)
8.1494e-05 TDB
period 1346.997570267517
3.69
6.6126e-06
1.81e-08
d
yr
n .2672610611528446 1.312e-09 deg/d
Q 2.622757779513448 8.5837e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2110  
   data-arc span      15648 days (42.84 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-08-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49023  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:08:26  

Additional Information
 Earth MOID = 1.17278 au 
 Jupiter MOID = 2.52037 au 
 T_jup = 3.523 
[ 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 14.4   n/a MPO467977  
diameter diameter 3.060 km 0.592 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.81574 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.432   0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22631 Dillard           Discovered 1998 May 22 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Linda Dillard mentored a finalist in the 2006 Intel Science Talent Search (STS), a science competition for high school seniors. She teaches at the Redondo Union High School, Redondo Beach, California.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060314/MPCPages.arcLast Updated: 2006-03-23

Alternate Designations
 1998 KV47 = 1992 WF4 = 2374 T-3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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