+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   150668 (2001 MP4) Classification: Main-belt Asteroid          SPK-ID: 2150668 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2823675230204572 5.7629e-08   a 2.524157131814545 1.4383e-08 au q 1.81141713478965 1.4584e-07 au i 8.283380553828334 4.876e-06 deg node 72.21269940010561 4.4308e-05 deg peri 279.035614220807 4.5501e-05 deg M 271.5883557899951 1.5034e-05 deg tp 2459560.232746570658 (2021-Dec-11.73274657) 6.3027e-05 TDB period 1464.782042259339 4.01 1.252e-05 3.428e-08 d yr n .2457703532770797 2.1006e-09 deg/d Q 3.236897128839439 1.8444e-08 au   Orbit Determination Parameters    # obs. used (total)      374      data-arc span      6889 days (18.86 yr)      first obs. used      2001-06-17      last obs. used      2020-04-27      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .59125      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 19:19:32   Additional Information  Earth MOID = .82701 au   Jupiter MOID = 2.26151 au   T_jup = 3.384  [ 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 15.74   n/a E2021B55   150668 (2001 MP4)          Discovered 2001-Jun-17 by NEAT at Palomar Reference: 20070303/Numbers.arc Last Updated: 2007-03-07 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-22 21:57 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin