+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21495 Feaga (1998 JP2) Classification: Main-belt Asteroid          SPK-ID: 2021495 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1681336042424335 3.23e-08   a 2.269944603245309 6.2527e-09 au q 1.888290635671015 7.2547e-08 au i 8.872191743416884 3.1052e-06 deg node 93.0468928583978 2.297e-05 deg peri 215.6730489165521 2.4748e-05 deg M 213.9638636981468 9.8046e-06 deg tp 2459903.232953858497 (2022-Nov-19.73295386) 3.4525e-05 TDB period 1249.169335814207 3.42 5.1614e-06 1.413e-08 d yr n .28819151229433 1.1908e-09 deg/d Q 2.651598570819603 7.304e-09 au   Orbit Determination Parameters    # obs. used (total)      1982      data-arc span      25975 days (71.12 yr)      first obs. used      1950-04-20      last obs. used      2021-06-01      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .49275      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 18:33:34   Additional Information  Earth MOID = .880324 au   Jupiter MOID = 2.58963 au   T_jup = 3.579  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.60   n/a MPCxxxxx   diameter diameter 3.588 km 0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.261   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   21495 Feaga           Discovered 1998 May 1 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station. Lori Michele (Lanier) Feaga (b. 1975) is a spectroscopist from the ultraviolet to the infrared. She has studied planetary satellites, including the discovery of chlorine in the atmosphere of Jupiter I (Io); and comets, most notably demonstrating the chemical heterogeneity in the natural outgassing by comet 9P/Tempel. 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 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-31 06:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin