+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   227357 (2005 UN125) Classification: Main-belt Asteroid          SPK-ID: 2227357 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06723996379929083 8.1614e-08   a 2.613196164546245 2.6839e-08 au q 2.43748494904171 2.0389e-07 au i 5.228860112321241 7.7811e-06 deg node 235.514713066021 6.393e-05 deg peri 317.6273065289695 8.1894e-05 deg M 68.50213635644624 4.5429e-05 deg tp 2458906.898641889026 (2020-Feb-27.39864189) 0.00019693 TDB period 1542.966315239658 4.22 2.377e-05 6.508e-08 d yr n .2333168238634449 3.5944e-09 deg/d Q 2.78890738005078 2.8643e-08 au   Orbit Determination Parameters    # obs. used (total)      183      data-arc span      8656 days (23.70 yr)      first obs. used      1996-10-05      last obs. used      2020-06-17      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .53189      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 00:39:26   Additional Information  Earth MOID = 1.43803 au   Jupiter MOID = 2.18572 au   T_jup = 3.399  [ 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 16.76   n/a E2021B55   227357 (2005 UN125)          Discovered 2005-Oct-24 by Spacewatch at Kitt Peak Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-21 09:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin