+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14552 (1997 UX20) Classification: Outer Main-belt Asteroid          SPK-ID: 2014552 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1298723746799802 4.1485e-08   a 3.227990054897873 1.6945e-08 au q 2.808763321024927 1.3482e-07 au i 1.701754149378732 3.7599e-06 deg node 68.28507821536122 0.00014428 deg peri 319.4967813412566 0.00014504 deg M 8.293513412120493 1.3322e-05 deg tp 2459151.698546243277 (2020-Oct-29.19854624) 7.8497e-05 TDB period 2118.345082404403 5.80 1.668e-05 4.567e-08 d yr n .169943982682645 1.3382e-09 deg/d Q 3.647216788770819 1.9146e-08 au   Orbit Determination Parameters    # obs. used (total)      1762      data-arc span      18249 days (49.96 yr)      first obs. used      1971-03-24      last obs. used      2021-03-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48015      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 00:32:08   Additional Information  Earth MOID = 1.81254 au   Jupiter MOID = 1.79748 au   T_jup = 3.173  [ 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 13.54   n/a E2020-QM5   diameter diameter 8.836 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.099   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   14552 (1997 UX20)          Discovered 1997-Oct-24 by Beijing Schmidt CCD Asteroid Program at Xinglong Reference: 20000418/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1997 UX20 = 1991 TA12 = 4052 T-1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 13:57 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin