+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11344 (1996 XH31) Classification: Main-belt Asteroid          SPK-ID: 2011344 [ 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 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1829195511733958 3.3311e-08   a 2.400953259570818 7.5068e-09 au q 1.961771966941822 8.0755e-08 au i 1.615328738950008 3.0425e-06 deg node 271.2954911061223 0.00016284 deg peri 147.6667306446396 0.00016323 deg M 191.3431234101661 1.1642e-05 deg tp 2459837.113050889933 (2022-Sep-14.61305089) 4.5179e-05 TDB period 1358.857717244067 3.72 6.3729e-06 1.745e-08 d yr n .2649283993692326 1.2425e-09 deg/d Q 2.840134552199814 8.88e-09 au   Orbit Determination Parameters    # obs. used (total)      1587      data-arc span      10078 days (27.59 yr)      first obs. used      1992-10-25      last obs. used      2020-05-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51152      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 17:14:28   Additional Information  Earth MOID = .973718 au   Jupiter MOID = 2.49342 au   T_jup = 3.502  [ 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 14.73   n/a E2021B10   diameter diameter 2.856 km 0.612 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.313   0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11344 (1996 XH31)          Discovered 1996-Dec-14 by Kobayashi, T. at Oizumi Reference: 19990831/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1996 XH31 = 1992 WW  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-12 17:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin