+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2899 Runrun Shaw (1964 TR2) Classification: Main-belt Asteroid          SPK-ID: 2002899 [ 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 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .155875078724804 1.3357e-08   a 2.262091045002625 6.3463e-09 au q 1.909487425280167 2.9471e-08 au i 3.221294587457304 7.5288e-07 deg node 19.68912456194733 5.8495e-06 deg peri 304.1090843178015 7.834e-06 deg M 224.4030657790676 5.13e-06 deg tp 2459668.570119107320 (2022-Mar-30.07011911) 1.8565e-05 TDB period 1242.692129042418 3.40 5.2296e-06 1.432e-08 d yr n .2896936349612236 1.2191e-09 deg/d Q 2.614694664725083 7.3356e-09 au   Orbit Determination Parameters    # obs. used (total)      2530      data-arc span      24220 days (66.31 yr)      first obs. used      1954-11-23      last obs. used      2021-03-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46105      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 14:26:03   Additional Information  Earth MOID = .897726 au   Jupiter MOID = 2.693 au   T_jup = 3.601  [ 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 13.51   n/a E2021B10   diameter diameter 4.831 km 0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.362   0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   2899 Runrun Shaw (1964 TR2)          Discovered 1964-Oct-08 by Purple Mountain Observatory at Nanking Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2132-Nov-09 03:54 < 00:01 Hebe 0.0426469808883059 0.042643300176288 0.0426506636168701 5.92878281149102 5.92878278690413 2500069.662287946 0.610842900545173 502.565682789799 28.16326289624 -68.8096622921343 211201.774783177 T 39 CATAB v2.0f-lin.ifort 2021-Apr-12 14:27:01 2021-Apr-12 14:27 Alternate Designations  1964 TR2 = 1981 SG1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-13 01:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin