+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17945 Hawass (1999 JU8) Classification: Main-belt Asteroid          SPK-ID: 2017945 [ 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 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1000083802160579 3.2934e-08   a 2.573688972818892 1.0481e-08 au q 2.316298507467345 8.5582e-08 au i 2.237353780686113 3.672e-06 deg node 268.7085112092831 0.00010366 deg peri 320.2147277123084 0.0001057 deg M 94.37387441056352 2.1692e-05 deg tp 2458805.149944914134 (2019-Nov-17.64994491) 9.0299e-05 TDB period 1508.108263222695 4.13 9.2124e-06 2.522e-08 d yr n .2387096528671699 1.4582e-09 deg/d Q 2.831079438170439 1.1529e-08 au   Orbit Determination Parameters    # obs. used (total)      1937      data-arc span      10761 days (29.46 yr)      first obs. used      1991-07-07      last obs. used      2020-12-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50091      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:36:02   Additional Information  Earth MOID = 1.30527 au   Jupiter MOID = 2.15721 au   T_jup = 3.420  [ 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 14.25   n/a E2021B10   diameter diameter 4.720 km 0.314 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.199   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   17945 Hawass           Discovered 1999 May 14 by J. Broughton at Reedy Creek Observatory. Egyptian archeologist Zahi A. Hawass (b. 1947) showed unfailing dedication in the battle of preserving Egypt's monuments and antiquities. He has also been involved in many important discoveries such as the pyramid builder's necropolis at Giza and golden mummies of El Bahariya Oasis. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010705/MPCPages.arc Last Updated: 2009-05-11 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) 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 1969-Jan-25 14:11 < 00:01 David 0.042606429159383 0.0425999737127999 0.0426128846059984 6.55165118209953 6.55165112797961 2440247.090954194 0.460591068241224 321.801516557469 26.8123544817561 0.193717916279807 19815.9403907488 T 35 CATAB v2.0f-lin.ifort 2021-Feb-24 02:36:06 2021-Feb-24 02:36 Alternate Designations  1999 JU8 = 1991 NZ  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-27 23:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin