+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   512244 (2015 YE18) Classification: Apollo [NEO]          SPK-ID: 2512244 [ 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 51 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5409156661609614 3.1459e-07   a 1.037401884620194 1.9362e-08 au q .4762549531242251 3.204e-07 au i 31.0273509422189 1.5119e-05 deg node 256.7303993060041 1.9599e-05 deg peri 80.57339341935341 2.3722e-05 deg M 175.4480241421559 3.7727e-05 deg tp 2458812.410324712489 (2019-Nov-24.91032471) 3.5838e-05 TDB period 385.9392742356596 1.06 1.0805e-05 2.958e-08 d yr n .9327892340393925 2.6114e-08 deg/d Q 1.598548816116164 2.9835e-08 au   Orbit Determination Parameters    # obs. used (total)      229      data-arc span      1545 days (4.23 yr)      first obs. used      2015-12-31      last obs. used      2020-03-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      1      norm. resid. RMS      .49837      source      ORB      producer      Otto Matic      solution date      2020-Mar-24 06:28:08   Additional Information  Earth MOID = .121895 au   Jupiter MOID = 4.0392 au   T_jup = 5.659  [ hide covariance matrix ] Orbital Elements at Epoch 2457897.5 (2017-May-24.0) TDB Reference: JPL 51 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5408432985814767 3.1444e-07   q .4762780906635313 3.1936e-07 au tp 2458040.724133007429 (2017-Oct-14.22413301) 1.8866e-05 TDB node 256.7398968889215 1.9592e-05 deg peri 80.59095895086114 2.388e-05 deg i 31.02877325380869 1.513e-05 deg   Orbit Determination Parameters    # obs. used (total)      229      data-arc span      1545 days (4.23 yr)      first obs. used      2015-12-31      last obs. used      2020-03-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      1      norm. resid. RMS      .49837      source      ORB      producer      Otto Matic      solution date      2020-Mar-24 06:28:08   Additional Information  Jupiter MOID = 4.0392 au   T_jup = 5.659  Orbit Covariance (6×6)   e q tp node peri i e 9.887502816812453E-14 -1.0039982062907E-13 4.592043572237505E-12 2.619257935863041E-12 -5.294002852914358E-12 2.863970328359902E-12 q -1.0039982062907E-13 1.019918749612332E-13 -4.683381193926685E-12 -2.646899783828721E-12 5.364097590202578E-12 -2.89163993188982E-12 tp 4.592043572237505E-12 -4.683381193926685E-12 3.559396139036563E-10 1.069710140750473E-10 -1.842675231726924E-10 1.102127322135258E-10 node 2.619257935863041E-12 -2.646899783828721E-12 1.069710140750473E-10 3.838339209356978E-10 -4.055725607502486E-10 2.337838993574044E-10 peri -5.294002852914358E-12 5.364097590202578E-12 -1.842675231726924E-10 -4.055725607502486E-10 5.702498092790858E-10 -2.878772304767054E-10 i 2.863970328359902E-12 -2.89163993188982E-12 1.102127322135258E-10 2.337838993574044E-10 -2.878772304767054E-10 2.28909744194234E-10 [ 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 17.8   n/a MPO437934   512244 (2015 YE18)          Discovered 2015-Dec-31 by Pan-STARRS 1 at Haleakala Reference: Last Updated: 2018-02-05 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-21 10:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin