+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   22859 (1999 RF146) Classification: Main-belt Asteroid          SPK-ID: 2022859 [ 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 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1083867777076027 2.6341e-08   a 2.191296413882295 6.8158e-09 au q 1.953788856579368 5.7688e-08 au i 3.095409347938642 3.8336e-06 deg node 272.2178368099387 7.2168e-05 deg peri 141.9492205045911 7.561e-05 deg M 138.8777806439815 2.2612e-05 deg tp 2458743.432453683764 (2019-Sep-16.93245368) 7.4125e-05 TDB period 1184.813840708331 3.24 5.5279e-06 1.513e-08 d yr n .3038452013565076 1.4176e-09 deg/d Q 2.428803971185223 7.5546e-09 au   Orbit Determination Parameters    # obs. used (total)      1578      data-arc span      8798 days (24.09 yr)      first obs. used      1997-01-15      last obs. used      2021-02-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51717      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 04:13:56   Additional Information  Earth MOID = .965521 au   Jupiter MOID = 2.85172 au   T_jup = 3.663  [ 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 14.69   n/a E2021B10   diameter diameter 2.403 km 0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.485   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   22859 (1999 RF146)          Discovered 1999-Sep-09 by LINEAR at Socorro Reference: 20010309/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 RF146 = 1998 HZ37  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 22:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin