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JPL Small-Body Database Browser
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20450 Marymohammed (1999 JJ111)
Classification: Main-belt Asteroid          SPK-ID: 2020450
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1603992292412 3.315e-08  
a 2.322746619939699 8.6168e-09 au
q 1.950179852378769 7.6927e-08 au
i 5.474236289280891 3.9142e-06 deg
node 129.9635538552762 3.9218e-05 deg
peri 198.7350903371514 4.1079e-05 deg
M 268.6367205996539 1.2352e-05 deg
tp 2459328.648452877439
4.4859e-05 TDB
period 1293.007910959801
n .2784205703217792 1.5493e-09 deg/d
Q 2.695313387500629 9.9989e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1156  
   data-arc span      8774 days (24.02 yr)  
   first obs. used      1995-03-25  
   last obs. used      2019-04-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55371  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:41:10  

Additional Information
 Earth MOID = .939593 au 
 Jupiter MOID = 2.63464 au 
 T_jup = 3.553 
[ 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 15.3   n/a MPO431735  
diameter diameter 2.041 km 0.407 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.293   0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

20450 Marymohammed           Discovered 1999 May 13 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Maryam Khadijah Mohammed (b. 1990) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her biochemistry, medicine, health, and microbiology project. She attends the C.W. Ruckel Middle School, Niceville, Florida.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041028/MPCPages.arcLast Updated: 2004-10-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1971-Mar-02 00:16 < 00:01 Vesta 0.0428912608604358 0.0428886791959009 0.0428938432675987 3.15893967886652 3.15893880068457 2441012.511250653 0.574422892480254 318.538778230568 37.3043435362705 67.3435034699321 157852.691947503 T 23 CATAB v2.0e-lin.ifort 2019-Jul-12 23:41:23 2019-Jul-12 23:41

Alternate Designations
 1999 JJ111 = 1995 FP7 = 1998 BA24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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