+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   277513 (2005 WT184) Classification: Main-belt Asteroid          SPK-ID: 2277513 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0210171341421575 5.418e-08   a 2.58619175118349 2.1498e-08 au q 2.531837412231526 1.2803e-07 au i 8.002926497560356 4.4925e-06 deg node 165.2343501716013 3.3129e-05 deg peri 28.14739759714764 0.00011513 deg M 45.52411888343192 0.00010949 deg tp 2458808.399472173238 (2019-Nov-20.89947217) 0.00046201 TDB period 1519.111005634486 4.16 1.8941e-05 5.186e-08 d yr n .2369807069165686 2.9549e-09 deg/d Q 2.640546090135455 2.195e-08 au   Orbit Determination Parameters    # obs. used (total)      294      data-arc span      6301 days (17.25 yr)      first obs. used      2003-03-27      last obs. used      2020-06-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53369      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 21:17:51   Additional Information  Earth MOID = 1.53523 au   Jupiter MOID = 2.318 au   T_jup = 3.408  [ 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 16.6   n/a MPO423065   rotation period rot_per 5.48 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result. Published Reference List: [Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.] 277513 (2005 WT184)          Discovered 2005-Nov-29 by NEAT at Palomar Reference: 20110517/Numbers.arc Last Updated: 2011-05-20 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Nov-24 16:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin