+ 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 54 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5409155821488679 2.9312e-07   a 1.037401878402005 1.7398e-08 au q .4762550374238556 2.9914e-07 au i 31.02734805508481 1.4556e-05 deg node 256.7303968965148 1.913e-05 deg peri 80.57339720166614 2.2822e-05 deg M 175.4480380369814 3.349e-05 deg tp 2458812.410311507607 (2019-Nov-24.91031151) 3.1906e-05 TDB period 385.9392707656785 1.06 9.7085e-06 2.658e-08 d yr n .9327892424261032 2.3465e-08 deg/d Q 1.598548719380155 2.6808e-08 au   Orbit Determination Parameters    # obs. used (total)      241      data-arc span      1846 days (5.05 yr)      first obs. used      2015-12-31      last obs. used      2021-01-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      1      norm. resid. RMS      .48892      source      ORB      producer      Otto Matic      solution date      2021-Jan-19 05:28:33   Additional Information  Earth MOID = .121895 au   Jupiter MOID = 4.0392 au   T_jup = 5.659  [ hide covariance matrix ] Orbital Elements at Epoch 2457912.5 (2017-Jun-08.0) TDB Reference: JPL 54 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5408400959090589 2.9299e-07   q .4762821267006694 2.9819e-07 au tp 2458040.724644006179 (2017-Oct-14.22464401) 1.7848e-05 TDB node 256.7391634319494 1.9124e-05 deg peri 80.59154108079832 2.2963e-05 deg i 31.02883970751178 1.4564e-05 deg   Orbit Determination Parameters    # obs. used (total)      241      data-arc span      1846 days (5.05 yr)      first obs. used      2015-12-31      last obs. used      2021-01-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      1      norm. resid. RMS      .48892      source      ORB      producer      Otto Matic      solution date      2021-Jan-19 05:28:33   Additional Information  Jupiter MOID = 4.0392 au   T_jup = 5.659  Orbit Covariance (6×6)   e q tp node peri i e 8.584249394514555E-14 -8.734741795362976E-14 3.898881980027608E-12 2.198747875677794E-12 -4.583535927567138E-12 2.415582146284528E-12 q -8.734741795362976E-14 8.891834940802663E-14 -3.989632373728276E-12 -2.227591119923881E-12 4.654282967205047E-12 -2.443504989520951E-12 tp 3.898881980027608E-12 -3.989632373728276E-12 3.185519879089311E-10 8.459837251395954E-11 -1.465490367998341E-10 8.638767045973565E-11 node 2.198747875677794E-12 -2.227591119923881E-12 8.459837251395954E-11 3.657367634551894E-10 -3.782881654107853E-10 2.168650053213702E-10 peri -4.583535927567138E-12 4.654282967205047E-12 -1.465490367998341E-10 -3.782881654107853E-10 5.272794228241412E-10 -2.611024871881981E-10 i 2.415582146284528E-12 -2.443504989520951E-12 8.638767045973565E-11 2.168650053213702E-10 -2.611024871881981E-10 2.121185253728604E-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 ] 2021-Jan-20 18:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin