+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   16956 (1998 MQ11) Classification: Jupiter Trojan          SPK-ID: 2016956 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1130547176859273 3.898e-08   a 5.226418107666076 9.7763e-08 au q 4.635546883995269 2.1569e-07 au i 30.91738525197663 8.2873e-07 deg node 137.5684314230245 3.2252e-06 deg peri 202.3683195404685 1.2592e-05 deg M 251.0688797111583 1.6706e-05 deg tp 2460521.047784697953 (2024-Jul-29.54778470) 0.00023283 TDB period 4364.200067259936 11.95 0.00012245 3.352e-07 d yr n .08248934385494983 2.3145e-09 deg/d Q 5.817289331336883 1.0882e-07 au   Orbit Determination Parameters    # obs. used (total)      1544      data-arc span      25796 days (70.63 yr)      first obs. used      1950-07-19      last obs. used      2021-03-04      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47127      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:48:12   Additional Information  Earth MOID = 3.63752 au   Jupiter MOID = .38401 au   T_jup = 2.704  [ 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 10.73   n/a E2021B10   diameter diameter 38.583 km 0.475 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)   rotation period rot_per 8.84 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: [French, L.M.; Stephens, R.D.; Coley, D.R.; Megna, R.; Wasserman, L.H. (2012) Minor Planet Bull. 39, 183-187.] geometric albedo albedo 0.082   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)   16956 (1998 MQ11)          Discovered 1998-Jun-19 by LINEAR at Socorro Reference: 20000913/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1998 MQ11 = 1990 WX2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-16 09:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin