+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 167 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4562287891876234 8.166e-09   a 1.747144357991706 6.2049e-09 au q .9500468030091623 1.3841e-08 au i 1.866829782692248 5.334e-07 deg node 209.877182529618 5.8358e-05 deg peri 114.6869596447991 5.828e-05 deg M 53.99792227292597 1.114e-06 deg tp 2459073.977967305699 (2020-Aug-12.47796731) 2.6004e-06 TDB period 843.512673316053 2.31 4.4935e-06 1.23e-08 d yr n .4267867115555629 2.2736e-09 deg/d Q 2.54424191297425 9.0357e-09 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A2 [EST] -2.318698602814956E-14 4.455E-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)      1240      # 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.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .27443      source      ORB      producer      Otto Matic      solution date      2021-Feb-26 05:18:57   Additional Information  Earth MOID = .0167637 au   Jupiter MOID = 2.81626 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-Feb-28 07:42 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin