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JPL Small-Body Database Browser
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23922 Tawadros (1998 SR135)
Classification: Main-belt Asteroid          SPK-ID: 2023922
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1537711249280671 4.7667e-08  
a 3.112655512787936 2.3772e-08 au
q 2.634018973072985 1.4921e-07 au
i 3.954489308881314 4.2513e-06 deg
node 96.21074227544914 7.4668e-05 deg
peri 251.4112588845816 7.5678e-05 deg
M 296.0629950095295 1.3441e-05 deg
tp 2458956.741739492202
(2020-Apr-17.24173949)
7.6565e-05 TDB
period 2005.834121199569
5.49
2.2979e-05
6.291e-08
d
yr
n .1794764563007361 2.0561e-09 deg/d
Q 3.591292052502886 2.7428e-08 au
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      9921 days (27.16 yr)  
   first obs. used      1991-05-14  
   last obs. used      2018-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58607  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 18:16:36  

Additional Information
 Earth MOID = 1.62977 au 
 Jupiter MOID = 1.83096 au 
 T_jup = 3.197 
[ 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 14.2   n/a MPO439264  
diameter diameter 9.904 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.031   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

23922 Tawadros           Discovered 1998 Sept. 26 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Kyrillos Bahaa Tawadros (b. 1993) is a finalist in the 2007 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his earth and space science project. He attends the Doolen Middle School, Tucson, Arizona.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20071026/MPCPages.arcLast Updated: 2007-10-28

[ show close-approach data ]
Alternate Designations
 1998 SR135 = 1999 XB219 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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