+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   8014 (1990 MF) Classification: Apollo [NEO, PHA]          SPK-ID: 2008014 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 169 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4562075551676871 8.1186e-09   a 1.747321944882782 6.2461e-09 au q .9501804723169596 1.3775e-08 au i 1.866715178440549 5.3284e-07 deg node 209.864768976047 5.835e-05 deg peri 114.7125627518043 5.8265e-05 deg M 137.6223159477786 1.2434e-06 deg tp 2459073.989257523934 (2020-Aug-12.48925752) 2.5691e-06 TDB period 843.6412836958797 2.31 4.5236e-06 1.238e-08 d yr n .4267216493044154 2.2881e-09 deg/d Q 2.544463417448604 9.0956e-09 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A2 [EST] -2.337305941077515E-14 4.454E-15 ALN [SET] 1. n/a NK [SET] 0. n/a NM [SET] 2. n/a R0 [SET] 1. n/a   Orbit Determination Parameters    # obs. used (total)      1244      # delay obs. used      9      # Doppler obs. used      12      data-arc span      11174 days (30.59 yr)      first obs. used      1990-06-14      last obs. used      2021-01-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .27448      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 20:13:38   Additional Information  Earth MOID = .0168401 au   Jupiter MOID = 2.81581 au   T_jup = 4.009   Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2  [ 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 18.95   n/a E2021B10   diameter diameter 0.7 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed medium albedo (0.15) rotation period rot_per 50.09 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.; Stephens, R.D. (2020) Minor Planet Bull. 47, 290-304.] 8014 (1990 MF)          Discovered 1990-Jun-26 by Helin, E. F. at Palomar Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jul-29 17:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin