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21653 Davidwang (1999 OH3)
Classification: Main-belt Asteroid          SPK-ID: 2021653
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2140272822940877 5.2218e-08  
a 2.787053578795611 1.8792e-08 au
q 2.190548075717976 1.465e-07 au
i 18.86758289442078 5.1328e-06 deg
node 243.5798731820513 1.8479e-05 deg
peri 99.0720165794485 2.2777e-05 deg
M 189.3747591682192 1.7934e-05 deg
tp 2459805.984485948700
(2022-Aug-14.48448595)		 8.9708e-05 TDB
period 1699.481351809007
4.65		 1.7189e-05
4.706e-08		 d
yr
n .2118293322941139 2.1425e-09 deg/d
Q 3.383559081873247 2.2815e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1139  
   data-arc span      9856 days (26.98 yr)  
   first obs. used      1993-05-30  
   last obs. used      2020-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47925  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:55:43  

Additional Information
 Earth MOID = 1.27629 au 
 Jupiter MOID = 2.34478 au 
 T_jup = 3.220 
[ 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 13.7   n/a MPO431750  
diameter diameter 8.821 km 0.206 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.15135 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 0.069   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21653 Davidwang           Discovered 1999 July 22 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
David Jueyu Wang (b. 1989) was awarded first place in the 2006 Intel International Science and Engineering Fair for his botany project. He attends the A.B. Lucas Secondary School, London, Ontario, Canada.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060711/MPCPages.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1999 OH3 = 1998 KN38 
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