+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2016 NL15) Classification: Apollo [NEO]          SPK-ID: 3754437 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 77 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5583608506236798 1.2631e-08   a 2.038855060299747 5.0623e-09 au q .9004382145323863 2.7316e-08 au i 5.541529352390231 2.6115e-06 deg node 300.6112642835404 1.7906e-05 deg peri 96.48962897747288 1.9389e-05 deg M 77.75920452302465 2.1767e-06 deg tp 2458770.817839160321 (2019-Oct-14.31783916) 5.8037e-06 TDB period 1063.354215227356 2.91 3.9603e-06 1.084e-08 d yr n .3385513452100514 1.2609e-09 deg/d Q 3.177271906067108 7.8888e-09 au   Orbit Determination Parameters    # obs. used (total)      517      # delay obs. used      2      # Doppler obs. used      2      data-arc span      1320 days (3.61 yr)      first obs. used      2016-07-05      last obs. used      2020-02-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .35137      source      ORB      producer      Otto Matic      solution date      2020-Jul-15 06:49:39   Additional Information  Earth MOID = .063319 au   Jupiter MOID = 2.3085 au   T_jup = 3.586  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 20.3   n/a E2020A92   rotation period rot_per 23.22 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Warner, B.D.; Aznar, A.M.; Sota Ballano, A. (2017) Minor Planet Bull. 44, 157-158.] [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-26 16:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin