+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21572 Nguyen-McCarty (1998 RQ52) Classification: Main-belt Asteroid          SPK-ID: 2021572 [ 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 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1765943628012911 3.677e-08   a 2.676973532435666 1.3099e-08 au q 2.204235097239269 9.7136e-08 au i 9.508594511100162 4.4555e-06 deg node 148.7313427490735 2.0387e-05 deg peri 60.87107969068104 2.3431e-05 deg M 164.4388773535964 1.3864e-05 deg tp 2458469.753834443770 (2018-Dec-17.25383444) 5.8752e-05 TDB period 1599.795765052328 4.38 1.1743e-05 3.215e-08 d yr n .2250287242060705 1.6517e-09 deg/d Q 3.149711967632065 1.5413e-08 au   Orbit Determination Parameters    # obs. used (total)      1557      data-arc span      10597 days (29.01 yr)      first obs. used      1992-02-08      last obs. used      2021-02-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52253      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:48:50   Additional Information  Earth MOID = 1.21779 au   Jupiter MOID = 1.86295 au   T_jup = 3.336  [ 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 MPO474049   diameter diameter 4.037 km 0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.327   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   21572 Nguyen-McCarty           Discovered 1998 Sept. 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Michelle Andrea Nguyen-McCarty (b. 1988) was awarded second place in the 2006 Intel International Science and Engineering Fair for her medicine and health project. She attends the Academy of the Holy Names, Albany, New York, U.S.A. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20060711/MPCPages.arc Last Updated: 2006-07-17 [ show close-approach data ] Alternate Designations  1998 RQ52 = 1992 CQ1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-22 11:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin