+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102496 (1999 TT277) Classification: Main-belt Asteroid          SPK-ID: 2102496 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1599237289913841 7.0129e-08   a 2.44805640742743 1.0395e-08 au q 2.056554097970384 1.7184e-07 au i 9.716402087119622 4.7617e-06 deg node 14.84829408292894 2.8156e-05 deg peri 134.3574346009136 3.1757e-05 deg M 81.1542569539489 1.1689e-05 deg tp 2458885.116213842833 (2020-Feb-05.61621384) 4.5484e-05 TDB period 1399.041372296806 3.83 8.9113e-06 2.44e-08 d yr n .2573190522657582 1.639e-09 deg/d Q 2.839558716884476 1.2058e-08 au   Orbit Determination Parameters    # obs. used (total)      627      data-arc span      13911 days (38.09 yr)      first obs. used      1982-04-20      last obs. used      2020-05-21      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50099      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:42:15   Additional Information  Earth MOID = 1.07887 au   Jupiter MOID = 2.17244 au   T_jup = 3.460  [ 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 16.07   n/a E2021B55   diameter diameter 3.616 km 0.971 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   geometric albedo albedo 0.038   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   102496 (1999 TT277)          Discovered 1999-Oct-06 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 Alternate Designations  1999 TT277 = 2001 BP66  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-20 08:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin