+ 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 ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07378819354903744 3.0813e-08   a 2.842115701043542 1.1791e-08 au q 2.632401117606183 9.1862e-08 au i 1.960732544593939 3.376e-06 deg node 11.70747479176678 8.9719e-05 deg peri 324.7016342739776 9.2516e-05 deg M 278.1007089798554 2.3719e-05 deg tp 2459794.642646646149 (2022-Aug-03.14264665) 0.00011605 TDB period 1750.092717620212 4.79 1.0891e-05 2.982e-08 d yr n .2057033872408374 1.2801e-09 deg/d Q 3.051830284480902 1.2661e-08 au   Orbit Determination Parameters    # obs. used (total)      2220      data-arc span      25433 days (69.63 yr)      first obs. used      1951-11-08      last obs. used      2021-06-26      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47394      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 02:41:49   Additional Information  Earth MOID = 1.62228 au   Jupiter MOID = 2.22263 au   T_jup = 3.304  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.86   n/a MPO614063   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. 2020-October); 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 Alternate Designations  1998 QP41 = 1979 SP8 = 1992 HT6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-25 11:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin