+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   16641 Esteban (1993 QH10) Classification: Main-belt Asteroid          SPK-ID: 2016641 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .143905801864461 2.5768e-08   a 2.316053249632143 1.0793e-08 au q 1.982759749583038 6.1601e-08 au i 20.65172147146798 6.6782e-07 deg node 276.7261838404074 3.0039e-06 deg peri 25.46659760751298 5.0182e-06 deg M 305.5135454513015 7.6484e-06 deg tp 2459395.353084785605 (2021-Jun-29.85308479) 2.8344e-05 TDB period 1287.422921969024 3.52 8.9995e-06 2.464e-08 d yr n .2796283908394336 1.9547e-09 deg/d Q 2.649346749681247 1.2347e-08 au   Orbit Determination Parameters    # obs. used (total)      1780      data-arc span      10804 days (29.58 yr)      first obs. used      1990-11-11      last obs. used      2020-06-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46303      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:37:35   Additional Information  Earth MOID = .976917 au   Jupiter MOID = 2.55579 au   T_jup = 3.482  [ 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 13.69   n/a E2021B10   diameter diameter 5.730 km 0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 79.62 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2014) http://www.asu.cas.cz/~ppravec/neo.htm] [Warner, B.D. (2015) Minor Planet Bull. 42, 54-60.] geometric albedo albedo 0.313   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   16641 Esteban           Discovered 1993 Aug. 16 by C. S. Shoemaker and E. M. Shoemaker at Palomar. Manuel (b. 1940) and Gloria (b. 1940) Esteban have been an admired and popular couple at the California State University, Chico, where he served very ably as president from 1993 to 2003. Both Barcelona-born, Manuel is also known for his ability as an artistic glassblower and Gloria for her interest in art and literature. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030806/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  1993 QH10 = 1933 RD  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-15 05:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin