+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11372 (1998 QP41) Classification: Main-belt Asteroid          SPK-ID: 2011372 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07345114054895929 3.6481e-08   a 2.842997541135493 1.2959e-08 au q 2.634176129161204 1.0509e-07 au i 1.960506836764959 3.8221e-06 deg node 11.70724397837271 0.00010314 deg peri 324.5583959990064 0.00010562 deg M 196.7863248006074 2.4122e-05 deg tp 2459794.311153009637 (2022-Aug-02.81115301) 0.00011905 TDB period 1750.907298266224 4.79 1.1972e-05 3.278e-08 d yr n .2056076871439611 1.4059e-09 deg/d Q 3.051818953109782 1.3911e-08 au   Orbit Determination Parameters    # obs. used (total)      1976      data-arc span      25008 days (68.47 yr)      first obs. used      1951-11-08      last obs. used      2020-04-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49097      source      ORB      producer      Otto Matic      solution date      2020-May-20 03:32:19   Additional Information  Earth MOID = 1.62479 au   Jupiter MOID = 2.22328 au   T_jup = 3.304  [ 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 13.8   n/a MPO337354   diameter diameter 5.631 km 0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 3.17 h n/a LCDB (Rev. 2019-August); 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: [Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.] geometric albedo albedo 0.184   0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11372 (1998 QP41)          Discovered 1998-Aug-17 by LINEAR at Socorro Reference: 19990831/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 QP41 = 1979 SP8 = 1992 HT6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-31 23:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin