+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   85471 Maryam (1997 LD4) Classification: Main-belt Asteroid          SPK-ID: 2085471 [ 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 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2318864054462212 8.1079e-08   a 2.35153430780133 1.7708e-08 au q 1.806245469881812 1.8458e-07 au i 25.47775051719869 1.6626e-05 deg node 67.14900176411965 1.5014e-05 deg peri 104.5299021700768 4.1129e-05 deg M 186.0356268646879 3.652e-05 deg tp 2459636.977743142284 (2022-Feb-26.47774314) 0.00013752 TDB period 1317.120186171683 3.61 1.4877e-05 4.073e-08 d yr n .2733235765267324 3.0873e-09 deg/d Q 2.896823145720848 2.1814e-08 au   Orbit Determination Parameters    # obs. used (total)      325      data-arc span      11599 days (31.76 yr)      first obs. used      1986-04-09      last obs. used      2018-01-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53304      source      ORB      producer      Otto Matic      solution date      2018-Feb-05 22:06:06   Additional Information  Earth MOID = .947538 au   Jupiter MOID = 2.41624 au   T_jup = 3.393  [ 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 16.2   n/a MPO337903   85471 Maryam           Discovered 1997 June 4 at Needville. Maryam is a composite name in honor of Martin R. Pepper (b. 1976), Ryan D. Pepper (b. 1977) and Amber D. Pepper (b. 1980), children of one of the discoverers of this minor planet. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20060413/MPCPages.arc Last Updated: 2006-04-17 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2064-Mar-19 05:07 00:01 David 0.0498180615563244 0.049815035007724 0.0498210901212782 5.69393022657882 5.69393017332092 2474998.713111975 1.45147942330861 616.654543746293 82.9138968244053 78.0914260147139 87945.8201468918 T 9 CATAB v2.0e-lin.ifort 2018-Feb-05 22:06:13 2018-Dec-17 17:28 Alternate Designations  1997 LD4 = 1999 XA136  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-19 21:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin