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18743 (1998 YD5)
Classification: Outer Main-belt Asteroid          SPK-ID: 2018743
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1375131030221783 1.4194e-08  
a 3.207026751635048 1.6625e-08 au
q 2.766018551542576 4.5541e-08 au
i 19.19309136435065 4.4615e-07 deg
node 122.6301407432302 2.223e-06 deg
peri 331.3998690985467 9.5569e-06 deg
M 317.1624164328398 7.3972e-06 deg
tp 2459450.117347942817
(2021-Aug-23.61734794)
4.3533e-05 TDB
period 2097.743097916091
5.74
1.6312e-05
4.466e-08
d
yr
n .1716130065486217 1.3345e-09 deg/d
Q 3.648034951727521 1.8911e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1843  
   data-arc span      10759 days (29.46 yr)  
   first obs. used      1991-09-06  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46854  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:36:33  

Additional Information
 Earth MOID = 1.79612 au 
 Jupiter MOID = 1.53145 au 
 T_jup = 3.091 
[ 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 13.01   n/a E2021B10  
diameter diameter 16.598 km 0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18743 (1998 YD5)          Discovered 1998-Dec-18 by ODAS at Caussols
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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