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22743 (1998 TD18)
Classification: Main-belt Asteroid          SPK-ID: 2022743
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .248106588824719 2.7445e-08  
a 3.151255078627267 1.5286e-08 au
q 2.369407930552484 8.7277e-08 au
i 13.28650449710818 4.5522e-06 deg
node 230.2553908696996 1.7256e-05 deg
peri 64.5335360399812 2.0363e-05 deg
M 48.44562240046918 9.5588e-06 deg
tp 2458925.536021001738
(2020-Mar-17.03602100)
5.4387e-05 TDB
period 2043.260619527421
5.59
1.4867e-05
4.07e-08
d
yr
n .1761889778325308 1.282e-09 deg/d
Q 3.933102226702049 1.9078e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1833  
   data-arc span      12664 days (34.67 yr)  
   first obs. used      1986-06-12  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47275  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:11:11  

Additional Information
 Earth MOID = 1.38783 au 
 Jupiter MOID = 1.45203 au 
 T_jup = 3.119 
[ 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 13.56   n/a E2021B10  
diameter diameter 15.358 km 3.311 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 49.8955 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 0.039   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

22743 (1998 TD18)          Discovered 1998-Oct-13 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010309/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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