+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19681 (1999 RE194) Classification: Main-belt Asteroid          SPK-ID: 2019681 [ 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 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09949459773955029 2.1207e-08   a 2.907031754162733 1.2787e-08 au q 2.617797799166212 6.2822e-08 au i 5.357570514662432 3.3383e-07 deg node 301.1234285997862 8.1982e-06 deg peri 187.0977200490701 1.2036e-05 deg M 340.5570464924178 6.2063e-06 deg tp 2459298.276126290006 (2021-Mar-24.77612629) 3.127e-05 TDB period 1810.393953299097 4.96 1.1945e-05 3.27e-08 d yr n .1988517467946514 1.312e-09 deg/d Q 3.196265709159253 1.4059e-08 au   Orbit Determination Parameters    # obs. used (total)      2420      data-arc span      16565 days (45.35 yr)      first obs. used      1975-11-06      last obs. used      2021-03-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43541      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:02:02   Additional Information  Earth MOID = 1.63289 au   Jupiter MOID = 1.86019 au   T_jup = 3.271  [ 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 12.96   n/a E2021B10   diameter diameter 9.877 km 2.608 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   geometric albedo albedo 0.125   0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   19681 (1999 RE194)          Discovered 1999-Sep-07 by LINEAR at Socorro Reference: 20001211/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 RE194 = 1975 VF6 = 1975 XC3 = 1977 FY1 = 1982 FS1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 01:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin