+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   74714 (1999 RP157) Classification: Main-belt Asteroid          SPK-ID: 2074714 [ 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 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1425460040822379 3.4371e-08   a 2.311890797503376 7.71e-09 au q 1.982340002444771 8.0062e-08 au i 7.606944974450945 3.841e-06 deg node 134.1760745085978 2.4835e-05 deg peri 195.4346015991174 2.8223e-05 deg M 26.92155647903355 1.1577e-05 deg tp 2459104.483235872257 (2020-Sep-11.98323587) 4.1339e-05 TDB period 1283.953812733946 3.52 6.4229e-06 1.758e-08 d yr n .2803839175752323 1.4026e-09 deg/d Q 2.641441592561981 8.8091e-09 au   Orbit Determination Parameters    # obs. used (total)      838      data-arc span      9860 days (27.00 yr)      first obs. used      1994-01-10      last obs. used      2021-01-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53478      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 06:58:51   Additional Information  Earth MOID = .970034 au   Jupiter MOID = 2.68446 au   T_jup = 3.559  [ hide covariance matrix ] Orbital Elements at Epoch 2457556.5 (2016-Jun-17.0) TDB Reference: JPL 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1424358714068898 3.4285e-08   q 1.982646297158991 7.984e-08 au tp 2457821.556324815841 (2017-Mar-09.05632482) 4.2756e-05 TDB node 134.2003812717412 2.4852e-05 deg peri 195.7780841017717 2.8263e-05 deg i 7.60422711254615 3.8396e-06 deg   Orbit Determination Parameters    # obs. used (total)      838      data-arc span      9860 days (27.00 yr)      first obs. used      1994-01-10      last obs. used      2021-01-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53478      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 06:58:51   Additional Information  Jupiter MOID = 2.68446 au   T_jup = 3.559  Orbit Covariance (6×6)   e q tp node peri i e 1.175430776129675E-15 -2.727874117984331E-15 -7.764233444976102E-14 1.269120774242259E-14 -3.773539400579235E-14 -4.896215192356864E-16 q -2.727874117984331E-15 6.374416687793456E-15 1.024759714001561E-13 -3.004225710265153E-14 6.216247590496043E-14 1.329338503195647E-15 tp -7.764233444976102E-14 1.024759714001561E-13 1.828090936046026E-9 -1.05813219474573E-11 5.842101451590366E-10 -1.226200150545127E-12 node 1.269120774242259E-14 -3.004225710265153E-14 -1.05813219474573E-11 6.176080571490586E-10 -6.149012445522492E-10 1.308188036210852E-11 peri -3.773539400579235E-14 6.216247590496043E-14 5.842101451590366E-10 -6.149012445522492E-10 7.987859844036499E-10 -1.333468148315317E-11 i -4.896215192356864E-16 1.329338503195647E-15 -1.226200150545127E-12 1.308188036210852E-11 -1.333468148315317E-11 1.474235834169537E-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 16.16   n/a E2021B10   74714 (1999 RP157)          Discovered 1999-Sep-09 by LINEAR at Socorro Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-24 17:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin