+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14778 (2216 T-2) Classification: Outer Main-belt Asteroid          SPK-ID: 2014778 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2047701041021015 3.3322e-08   a 3.208265089306753 1.5644e-08 au q 2.551308312982271 1.0473e-07 au i .8294637332766773 3.977e-06 deg node 31.7357111958909 0.0002629 deg peri 274.9074527036084 0.00026307 deg M 141.7953939115405 1.094e-05 deg tp 2458373.770532141835 (2018-Sep-12.27053214) 6.1199e-05 TDB period 2098.958225784206 5.75 1.5353e-05 4.203e-08 d yr n .1715136564309173 1.2545e-09 deg/d Q 3.865221865631235 1.8848e-08 au   Orbit Determination Parameters    # obs. used (total)      1848      data-arc span      17313 days (47.40 yr)      first obs. used      1973-09-19      last obs. used      2021-02-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51462      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 00:38:57   Additional Information  Earth MOID = 1.53458 au   Jupiter MOID = 1.40234 au   T_jup = 3.159  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.57   n/a E2020-QM5   diameter diameter 9.572 km 0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.084   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   14778 (2216 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar Reference: 20000418/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  2216 T-2 = 1990 RX1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-21 02:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin