+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   85242 (1993 QP4) Classification: Main-belt Asteroid          SPK-ID: 2085242 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2306740645402265 4.6426e-08   a 2.404369075042483 1.0989e-08 au q 1.849743487847609 1.1529e-07 au i 2.945752752683088 4.7532e-06 deg node 134.6722140772004 7.9381e-05 deg peri 216.3829311886247 8.0094e-05 deg M 58.68855154537987 8.4655e-06 deg tp 2458778.501000406537 (2019-Oct-22.00100041) 3.2132e-05 TDB period 1361.758601110649 3.73 9.336e-06 2.556e-08 d yr n .2643640361121158 1.8124e-09 deg/d Q 2.958994662237358 1.3524e-08 au   Orbit Determination Parameters    # obs. used (total)      639      data-arc span      9611 days (26.31 yr)      first obs. used      1993-08-15      last obs. used      2019-12-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51179      source      ORB      producer      Otto Matic      solution date      2020-Feb-23 20:28:38   Additional Information  Earth MOID = .84486 au   Jupiter MOID = 2.47414 au   T_jup = 3.485  [ hide covariance matrix ] Orbital Elements at Epoch 2457314.5 (2015-Oct-19.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2322565812556787 4.6488e-08   q 1.845409684464373 1.1563e-07 au tp 2457417.129196538651 (2016-Jan-29.62919654) 3.379e-05 TDB node 134.7457344277897 7.9416e-05 deg peri 216.3592441528412 8.0112e-05 deg i 2.945850590328882 4.7546e-06 deg   Orbit Determination Parameters    # obs. used (total)      639      data-arc span      9611 days (26.31 yr)      first obs. used      1993-08-15      last obs. used      2019-12-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51179      source      ORB      producer      Otto Matic      solution date      2020-Feb-23 20:28:38   Additional Information  Jupiter MOID = 2.47414 au   T_jup = 3.485  Orbit Covariance (6×6)   e q tp node peri i e 2.161129294218074E-15 -5.363152072939993E-15 -2.124543126811568E-14 2.133749949285526E-14 3.685369141960109E-15 -1.917774392845194E-15 q -5.363152072939993E-15 1.336945940250709E-14 -5.49106937059361E-14 -5.379855989987011E-14 -4.136716059198346E-14 4.95314163779178E-15 tp -2.124543126811568E-14 -5.49106937059361E-14 1.141753866701734E-9 -5.947353982990577E-12 3.70336471133104E-10 -9.422330033160616E-14 node 2.133749949285526E-14 -5.379855989987011E-14 -5.947353982990577E-12 6.30695728283146E-9 -6.298944015040031E-9 6.040460216270857E-11 peri 3.685369141960109E-15 -4.136716059198346E-14 3.70336471133104E-10 -6.298944015040031E-9 6.417997696269722E-9 -6.040624546040534E-11 i -1.917774392845194E-15 4.95314163779178E-15 -9.422330033160616E-14 6.040460216270857E-11 -6.040624546040534E-11 2.26061199030614E-11 [ 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 16.0   n/a MPO493473   85242 (1993 QP4)          Discovered 1993-Aug-18 by Elst, E. W. at Caussols Reference: 20040830/Numbers.arc Last Updated: 2004-09-06 [ show close-approach data ] Alternate Designations  1993 QP4 = 2001 XM172  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-26 05:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin