+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100051 Davidhernandez (1991 TC16) Classification: Main-belt Asteroid          SPK-ID: 2100051 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0391134286848867 3.274e-08   a 2.187358465036087 7.6287e-09 au q 2.101803375705614 7.4145e-08 au i 5.835650230696956 3.7748e-06 deg node 198.0379634118136 3.4165e-05 deg peri 222.8709084054565 6.2134e-05 deg M 343.2784277232324 5.0464e-05 deg tp 2459255.384912764007 (2021-Feb-09.88491276) 0.00016559 TDB period 1181.621456882634 3.24 6.1816e-06 1.692e-08 d yr n .3046660992004629 1.5939e-09 deg/d Q 2.272913554366559 7.9271e-09 au   Orbit Determination Parameters    # obs. used (total)      768      data-arc span      14347 days (39.28 yr)      first obs. used      1981-10-01      last obs. used      2021-01-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53317      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:24:12   Additional Information  Earth MOID = 1.11547 au   Jupiter MOID = 2.82122 au   T_jup = 3.668  [ 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 16.6   n/a MPO432529   100051 Davidhernandez           Discovered 1991 Oct. 6 by A. Lowe on plates taken at Palomar. David A. Hernandez (b. 1998) is a nephew of the discoverer. 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 2168-Nov-18 18:44 < 00:01 Hebe 0.0447461958001127 0.0447370088746503 0.0447553944772403 5.60666099595343 5.60666097117367 2513228.280212078 0.696168076100037 1233.5070665146 27.5719550266407 -68.2252213212043 225391.635883155 T 20 CATAB v2.0f-lin.ifort 2021-Feb-24 08:24:14 2021-Feb-24 08:24 Alternate Designations  1991 TC16 = 2004 VD74  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 12:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin