+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   22025 (1999 XS118) Classification: Main-belt Asteroid          SPK-ID: 2022025 [ 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 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1560139663271956 3.971e-08   a 2.798091044051015 1.4599e-08 au q 2.361549762124012 1.1289e-07 au i 9.586130559389398 4.3505e-06 deg node 47.17990658392664 2.7734e-05 deg peri 266.9473116399823 3.0826e-05 deg M 267.1381857198303 1.5078e-05 deg tp 2459641.487066708356 (2022-Mar-02.98706671) 7.2412e-05 TDB period 1709.586930275061 4.68 1.3379e-05 3.663e-08 d yr n .2105771830754921 1.648e-09 deg/d Q 3.234632325978018 1.6876e-08 au   Orbit Determination Parameters    # obs. used (total)      1552      data-arc span      14723 days (40.31 yr)      first obs. used      1980-11-03      last obs. used      2021-02-24      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52342      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:58:05   Additional Information  Earth MOID = 1.37014 au   Jupiter MOID = 2.11182 au   T_jup = 3.288  [ 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 E2021B10   diameter diameter 4.264 km 0.621 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.353   0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   22025 (1999 XS118)          Discovered 1999-Dec-05 by CSS at Catalina Reference: 20010208/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1999 XS118 = 1980 VC = 1992 ER36  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-22 03:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin