+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19218 (1993 FH49) Classification: Main-belt Asteroid          SPK-ID: 2019218 [ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07373396720151128 3.3373e-08   a 2.894835450196595 1.0263e-08 au q 2.681387748058027 9.8543e-08 au i 1.652373763775911 4.1308e-06 deg node 190.1026899897275 0.00010704 deg peri 228.0213500125801 0.00011086 deg M 347.0521141175859 2.717e-05 deg tp 2459265.203922991706 (2021-Feb-19.70392299) 0.00013577 TDB period 1799.012787767256 4.93 9.5672e-06 2.619e-08 d yr n .200109750440848 1.0642e-09 deg/d Q 3.108283152335163 1.102e-08 au   Orbit Determination Parameters    # obs. used (total)      1763      data-arc span      11133 days (30.48 yr)      first obs. used      1990-08-20      last obs. used      2021-02-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50804      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:49:09   Additional Information  Earth MOID = 1.69301 au   Jupiter MOID = 2.13754 au   T_jup = 3.285  [ 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 14.36   n/a E2021B10   diameter diameter 4.367 km 0.263 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.212   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   19218 (1993 FH49)          Discovered 1993-Mar-19 by UESAC at La Silla Reference: 20001211/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1993 FH49 = 1990 QR13 = 1995 SL12  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-18 12:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin