+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17994 (1999 JF70) Classification: Main-belt Asteroid          SPK-ID: 2017994 [ 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 46 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06406206887535258 1.744e-08   a 2.933185471537739 1.2722e-08 au q 2.745279541835905 5.2547e-08 au i 13.5722672228837 4.7378e-07 deg node 60.22941802990101 3.8631e-06 deg peri 197.3257213143767 2.1685e-05 deg M 74.15116766213487 1.905e-05 deg tp 2458822.559695886969 (2019-Dec-05.05969589) 9.7235e-05 TDB period 1834.880201760724 5.02 1.1937e-05 3.268e-08 d yr n .1961980949244257 1.2764e-09 deg/d Q 3.121091401239573 1.3537e-08 au   Orbit Determination Parameters    # obs. used (total)      2721      data-arc span      15223 days (41.68 yr)      first obs. used      1979-04-25      last obs. used      2020-12-28      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .41644      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:19:16   Additional Information  Earth MOID = 1.73202 au   Jupiter MOID = 1.90569 au   T_jup = 3.231  [ 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 12.38   n/a E2021B10   diameter diameter 10.822 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.199   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   17994 (1999 JF70)          Discovered 1999-May-12 by LINEAR at Socorro Reference: 20001013/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 JF70 = 1979 HO5 = 1981 UF8 = 1984 JE1 = 1986 XS5 = 1991 VU1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-18 19:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin