+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   22023 (1999 XH114) Classification: Main-belt Asteroid          SPK-ID: 2022023 [ 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 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1469820072284768 2.1623e-08   a 2.676889388361597 1.2413e-08 au q 2.2834348129316 6.0987e-08 au i 13.26615463856568 7.4278e-07 deg node 343.8336160014398 3.8611e-06 deg peri 338.8531608289213 9.4046e-06 deg M 6.075007838934962 5.3814e-06 deg tp 2459173.504684476438 (2020-Nov-20.00468448) 2.3889e-05 TDB period 1599.720337181692 4.38 1.1128e-05 3.047e-08 d yr n .2250393344590656 1.5654e-09 deg/d Q 3.070343963791594 1.4238e-08 au   Orbit Determination Parameters    # obs. used (total)      2088      data-arc span      14353 days (39.30 yr)      first obs. used      1981-09-05      last obs. used      2020-12-22      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .42333      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:57:59   Additional Information  Earth MOID = 1.275 au   Jupiter MOID = 2.30335 au   T_jup = 3.325  [ 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 12.82   n/a E2021B10   diameter diameter 7.587 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.194   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   22023 (1999 XH114)          Discovered 1999-Dec-11 by LINEAR at Socorro Reference: 20010208/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1999 XH114 = 1981 RQ4 = 1981 SA4 = 1997 HP5  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-23 03:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin