+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   10448 Schawlow (4314 T-3) Classification: Main-belt Asteroid          SPK-ID: 2010448 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .04921820496285496 3.1667e-08   a 2.838012737126218 1.3142e-08 au q 2.698330844543146 9.2556e-08 au i 3.248346971813905 3.546e-06 deg node 118.8368218671654 6.8731e-05 deg peri 179.5644645883206 7.98e-05 deg M 45.27089981287566 4.0643e-05 deg tp 2458780.897862408556 (2019-Oct-24.39786241) 0.00019703 TDB period 1746.304355771497 4.78 1.213e-05 3.321e-08 d yr n .2061496318268966 1.432e-09 deg/d Q 2.977694629709289 1.3789e-08 au   Orbit Determination Parameters    # obs. used (total)      2028      data-arc span      23966 days (65.62 yr)      first obs. used      1954-12-22      last obs. used      2020-08-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53733      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 00:17:41   Additional Information  Earth MOID = 1.68252 au   Jupiter MOID = 2.12146 au   T_jup = 3.306  [ 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 13.2   n/a MPO449016   diameter diameter 6.066 km 0.185 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.303   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   10448 Schawlow           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Arthur L. Schawlow (1921-1999), American physicist, shared part of the 1981 Nobel Prize for physics with Nicolaas Bloembergen for contributions to the development of laser spectroscopy. The name was suggested by W. A. Fröger. 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 [ show close-approach data ] Alternate Designations  4314 T-3 = 1981 NB1 = 1986 PO3 = 1991 RR21  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-24 23:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin