+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   5332 Davidaguilar (1990 DA) Classification: Amor [NEO]          SPK-ID: 2005332 [ 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 265 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4552004299673466 3.5318e-08   a 2.164912106073096 6.8889e-09 au q 1.179443184547109 7.6381e-08 au i 25.51383420969458 4.488e-06 deg node 142.7887374947455 1.0606e-05 deg peri 306.0161737485708 1.2423e-05 deg M 266.074389766853 1.2898e-05 deg tp 2459504.057071868242 (2021-Oct-16.55707187) 4.2938e-05 TDB period 1163.47975383184 3.19 5.5534e-06 1.52e-08 d yr n .3094166433187728 1.4769e-09 deg/d Q 3.150381027599083 1.0025e-08 au   Orbit Determination Parameters    # obs. used (total)      1369      data-arc span      16720 days (45.78 yr)      first obs. used      1973-10-18      last obs. used      2019-07-29      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50983      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 17:24:56   Additional Information  Earth MOID = .307659 au   Jupiter MOID = 2.36276 au   T_jup = 3.440  [ 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 14.8   n/a MPO473840   diameter diameter 3.6 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed medium albedo (0.15) rotation period rot_per 5.803 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Binzel, R.P. (1990) IAUC 4969.] [Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] [Skiff, B.A.; McLelland, K.P.; Sanborn, J.J.; Pravec, P.; Koehn, B.W. (2019) Minor Plantet Bull. 46, 238-265.] [Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46, 423-438.] 5332 Davidaguilar           Discovered 1990 Feb. 16 by A. Sugie at Dynic. David Aguilar (b. 1945), director of public affairs at the Harvard-Smithsonian Center for Astrophysics, has shown a lifelong devotion to astronomy and science communication as a public relations professional, writer and space artist. He also is an astronomical photographer and an avid telescope maker. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20081212/MPCPages.arc Last Updated: 2008-12-12 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 04:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin