+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   7371 El-Baz (1978 VA6) Classification: Outer Main-belt Asteroid          SPK-ID: 2007371 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .125388521142527 2.9835e-08   a 3.234063041267 1.9193e-08 au q 2.828548659240828 9.7416e-08 au i 2.035590438272326 3.7471e-06 deg node 60.62718895903103 0.00011483 deg peri 206.6751093466652 0.00011609 deg M 257.4108272034166 1.7832e-05 deg tp 2459805.868997799578 (2022-Aug-14.36899780) 0.00010612 TDB period 2124.325923165122 5.82 1.8911e-05 5.178e-08 d yr n .1694655213092824 1.5086e-09 deg/d Q 3.639577423293173 2.16e-08 au   Orbit Determination Parameters    # obs. used (total)      1565      data-arc span      15415 days (42.20 yr)      first obs. used      1978-11-05      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52693      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:36:54   Additional Information  Earth MOID = 1.81101 au   Jupiter MOID = 1.44384 au   T_jup = 3.172  [ 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 13.74   n/a E2021B10   diameter diameter 9.224 km 0.132 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.074   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   7371 El-Baz           Discovered 1978 Nov. 7 by E. F. Helin and S. J. Bus at Palomar. Farouk El-Baz (b. 1938) is an Egyptian American remote sensing expert. He is perhaps best known for using his expertise to help select the landing site for the Apollo 11 astronauts. He also trained the Apollo 15 astronauts in geology, ensuring that the most scientifically useful samples were gathered for return to Earth. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC batch dated 2019-08-27 Last Updated: 2019-09-23 [ show close-approach data ] Alternate Designations  1978 VA6 = 1978 WX11 = 1992 EC11  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-25 17:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin