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JPL Small-Body Database Browser
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19443 Yanzhong (1998 FE109)
Classification: Main-belt Asteroid          SPK-ID: 2019443
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1425183632721962 3.818e-08  
a 2.331993488110621 8.8208e-09 au
q 1.999641593023676 8.8633e-08 au
i 5.146897205267942 4.1467e-06 deg
node 234.0605980871804 4.8888e-05 deg
peri 173.0526025448954 5.113e-05 deg
M 215.3578962188111 1.6145e-05 deg
tp 2459523.114741765084
(2021-Nov-04.61474176)
5.9617e-05 TDB
period 1300.736798740468
3.56
7.3801e-06
2.021e-08
d
yr
n .2767662146166663 1.5703e-09 deg/d
Q 2.664345383197567 1.0078e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1302  
   data-arc span      10743 days (29.41 yr)  
   first obs. used      1989-11-29  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51668  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:17:43  

Additional Information
 Earth MOID = 1.00958 au 
 Jupiter MOID = 2.69858 au 
 T_jup = 3.551 
[ 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 14.9   n/a MPO365485  
diameter diameter 2.540 km 0.475 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.022 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.396   0.270 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19443 Yanzhong           Discovered 1998 Mar. 31 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Yan Zhong (b. 1985) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for her mathematics project. She attends the Vero Beach High School, Vero Beach, Florida, 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: 20040830/MPCPages.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 FE109 = 1989 WD7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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