+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   227187 (2005 QL57) Classification: Main-belt Asteroid          SPK-ID: 2227187 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2072774801784724 7.4258e-08   a 2.410002432343208 9.78e-09 au q 1.910463200943118 1.7896e-07 au i 1.603100205692283 3.839e-06 deg node 251.9050967827025 0.00028789 deg peri 69.33351558603027 0.00028828 deg M 41.38672866038399 1.3252e-05 deg tp 2459043.397445349513 (2020-Jul-12.89744535) 5.05e-05 TDB period 1366.54723639253 3.74 8.3183e-06 2.277e-08 d yr n .2634376554376148 1.6036e-09 deg/d Q 2.909541663743298 1.1807e-08 au   Orbit Determination Parameters    # obs. used (total)      298      data-arc span      6140 days (16.81 yr)      first obs. used      2004-03-15      last obs. used      2021-01-05      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52654      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 00:38:46   Additional Information  Earth MOID = .896519 au   Jupiter MOID = 2.41092 au   T_jup = 3.490  [ 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 17.29   n/a E2021B55   227187 (2005 QL57)          Discovered 2005-Aug-24 by NEAT at Palomar Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-16 15:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin