+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   152721 (1998 TU25) Classification: Main-belt Asteroid          SPK-ID: 2152721 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07358408575330508 4.4375e-08   a 2.316547966258282 1.1075e-08 au q 2.146086902057488 1.0331e-07 au i 4.180358263309023 8.0012e-06 deg node 29.07786900931329 6.098e-05 deg peri 95.11356732019706 8.3257e-05 deg M 23.77673175871786 5.5979e-05 deg tp 2459115.443006048812 (2020-Sep-22.94300605) 0.00020013 TDB period 1287.835440680386 3.53 9.2354e-06 2.529e-08 d yr n .2795388204333045 2.0046e-09 deg/d Q 2.487009030459076 1.189e-08 au   Orbit Determination Parameters    # obs. used (total)      232      data-arc span      10186 days (27.89 yr)      first obs. used      1993-04-25      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .63483      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 19:28:22   Additional Information  Earth MOID = 1.16621 au   Jupiter MOID = 2.54137 au   T_jup = 3.573  [ 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 17.4   n/a MPO493867   152721 (1998 TU25)          Discovered 1998-Oct-14 by Spacewatch at Kitt Peak Reference: 20070402/Numbers.arc Last Updated: 2007-04-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-19 01:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin