+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15516 (1999 VN86) Classification: Main-belt Asteroid          SPK-ID: 2015516 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1705513101136303 1.5469e-08   a 2.674004040690626 8.9524e-09 au q 2.217949148301699 3.9464e-08 au i 12.5167692060523 7.0676e-07 deg node 179.1661684026625 4.7691e-06 deg peri 93.67644182552101 1.3446e-05 deg M 68.89768256751447 7.9453e-06 deg tp 2458894.836466582439 (2020-Feb-15.33646658) 3.5139e-05 TDB period 1597.134590448555 4.37 8.0207e-06 2.196e-08 d yr n .2254036711451438 1.132e-09 deg/d Q 3.130058933079553 1.0479e-08 au   Orbit Determination Parameters    # obs. used (total)      2031      data-arc span      24362 days (66.70 yr)      first obs. used      1954-06-02      last obs. used      2021-02-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47846      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:00:40   Additional Information  Earth MOID = 1.24343 au   Jupiter MOID = 2.10729 au   T_jup = 3.325  [ show covariance matrix ] [ 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 13.81   n/a E2021B10   diameter diameter 4.992 km 0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.257   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15516 (1999 VN86)          Discovered 1999-Nov-05 by LINEAR at Socorro Reference: 20000621/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 VN86 = 1984 EM1 = 1990 UC9 = 1998 QV78  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-23 09:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin