+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   348400 (2005 JF21) Classification: Amor [NEO, PHA]          SPK-ID: 2348400 [ 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 191 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5355274016031503 1.0669e-08   a 2.225559633770501 4.8335e-09 au q 1.033711465984526 2.304e-08 au i 10.84854744708931 3.1343e-06 deg node 132.198072527463 9.4839e-06 deg peri 206.09705629 1.0849e-05 deg M 214.5877131897765 1.9526e-06 deg tp 2459690.341847014219 (2022-Apr-20.84184701) 7.9955e-06 TDB period 1212.710898049921 3.32 3.9507e-06 1.082e-08 d yr n .2968555824631344 9.6707e-10 deg/d Q 3.417407801556477 7.422e-09 au   Orbit Determination Parameters    # obs. used (total)      1199      # delay obs. used      1      # Doppler obs. used      0      data-arc span      6664 days (18.25 yr)      first obs. used      2002-11-19      last obs. used      2021-02-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .32172      source      ORB      producer      Otto Matic      solution date      2021-Feb-17 05:22:48   Additional Information  Earth MOID = .045705 au   Jupiter MOID = 2.00562 au   T_jup = 3.423  [ 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 17.3   n/a MPO348964   rotation period rot_per 2.4149 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Oey, J.; Groom, R. (2016) Minor Planet Bull. 43, 208-210.] [Stephens, R.D.; Warner, B.D. (2016) Minor Planet Bull. 43, 22-24.] [Vaduvescu, O.; Aznar, A.M.; Tudor, V.; Predatu, M.; et al. (2017) Earth, Moon, and Planets 120, 41-100.] [Monteiro, F.; Silva, J.S.; Lazzaro, D.; Arcoverde, P.; et al. (2018) Plan. Space Sci. 164, 54-74.] 348400 (2005 JF21)          Discovered 2005-May-04 by Spacewatch at Kitt Peak Reference: 20121228/Numbers.arc Last Updated: 2013-01-02 [ show close-approach data ] Alternate Designations  2005 JF21 = 2005 JU67  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-14 12:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin