+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21582 Arunvenkataraman (1998 SE58) Classification: Main-belt Asteroid          SPK-ID: 2021582 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1271615584656638 3.3849e-08   a 2.65884748740071 9.8172e-09 au q 2.320744297180322 8.938e-08 au i 2.186441747094044 3.8836e-06 deg node 357.5736391323186 8.5186e-05 deg peri 229.0027840811005 8.6271e-05 deg M 217.4870674439315 1.554e-05 deg tp 2460023.388557872246 (2023-Mar-19.88855787) 7.0003e-05 TDB period 1583.57474501635 4.34 8.7705e-06 2.401e-08 d yr n .2273337593523463 1.2591e-09 deg/d Q 2.996950677621099 1.1066e-08 au   Orbit Determination Parameters    # obs. used (total)      2157      data-arc span      11115 days (30.43 yr)      first obs. used      1990-10-14      last obs. used      2021-03-20      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47997      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 18:34:45   Additional Information  Earth MOID = 1.31243 au   Jupiter MOID = 1.98817 au   T_jup = 3.374  [ 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 13.87   n/a E2021B10   diameter diameter 4.664 km 0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.295   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   21582 Arunvenkataraman           Discovered 1998 Sept. 17 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station. Arun Venkataraman (b. 1958), head of the computer department of the Arecibo Observatory, has made important contributions to radar observations of minor planets. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20080718/MPCPages.arc Last Updated: 2008-07-18 [ show close-approach data ] Alternate Designations  1998 SE58 = 1990 TM12  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Aug-01 03:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin