+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   22935 (1999 TO155) Classification: Outer Main-belt Asteroid          SPK-ID: 2022935 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1805646386643537 3.57e-08   a 3.215989990484531 1.8324e-08 au q 2.635295919904513 1.1599e-07 au i 2.851115201613253 3.8955e-06 deg node 129.885893370165 8.3808e-05 deg peri 291.4289799327567 8.4511e-05 deg M 229.705150835337 1.2846e-05 deg tp 2459962.921625298258 (2023-Jan-18.42162530) 7.9003e-05 TDB period 2106.543634434107 5.77 1.8004e-05 4.929e-08 d yr n .1708960565142572 1.4606e-09 deg/d Q 3.796684061064549 2.1633e-08 au   Orbit Determination Parameters    # obs. used (total)      1111      data-arc span      13761 days (37.68 yr)      first obs. used      1982-12-13      last obs. used      2020-08-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .5635      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 04:14:55   Additional Information  Earth MOID = 1.64926 au   Jupiter MOID = 1.54764 au   T_jup = 3.163  [ 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 13.97   n/a E2021B10   diameter diameter 8.311 km 0.183 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.077   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   22935 (1999 TO155)          Discovered 1999-Oct-07 by LINEAR at Socorro Reference: 20010309/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 TO155 = 1982 XN2 = 1982 XZ4 = 1998 MG23  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-21 06:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin