+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17109 (1999 JF52) Classification: Main-belt Asteroid          SPK-ID: 2017109 [ 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 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1704781590566641 2.2255e-08   a 2.771037694787255 1.1308e-08 au q 2.298636289903301 6.2952e-08 au i 7.573997696573083 5.3133e-07 deg node 260.6429136711253 2.0153e-06 deg peri 82.55335330668768 3.8567e-06 deg M 159.2177875178054 5.3733e-06 deg tp 2458455.337208153685 (2018-Dec-02.83720815) 2.2171e-05 TDB period 1684.853239369841 4.61 1.0314e-05 2.824e-08 d yr n .2136684617911558 1.3079e-09 deg/d Q 3.243439099671208 1.3236e-08 au   Orbit Determination Parameters    # obs. used (total)      2500      data-arc span      15856 days (43.41 yr)      first obs. used      1977-10-16      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43334      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:53:41   Additional Information  Earth MOID = 1.30405 au   Jupiter MOID = 2.21856 au   T_jup = 3.303  [ 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 12.79   n/a E2021B10   diameter diameter 27.04 km 3.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3 rotation period rot_per 3.1874 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Rowe, B. (2019) Minor Planet Bull. 46, 353-356.] geometric albedo albedo 0.0265   0.008 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3 17109 (1999 JF52)          Discovered 1999-May-10 by LINEAR at Socorro Reference: 20000913/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 JF52 = 1227 T-3 = 1986 WT4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-21 01:47 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin