+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   447297 (2005 WM78) Classification: Main-belt Asteroid          SPK-ID: 2447297 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07106695537174303 5.6403e-08   a 3.078867728557296 5.1289e-08 au q 2.860061973096415 2.0261e-07 au i 13.36956426379682 7.1719e-06 deg node 68.6414860511556 2.3777e-05 deg peri 246.1193373202022 7.5653e-05 deg M 39.40500175743406 6.5635e-05 deg tp 2458984.509910390814 (2020-May-15.00991039) 0.00036252 TDB period 1973.263007015033 5.40 4.9307e-05 1.35e-07 d yr n .1824389342526489 4.5587e-09 deg/d Q 3.297673484018178 5.4934e-08 au   Orbit Determination Parameters    # obs. used (total)      154      data-arc span      5362 days (14.68 yr)      first obs. used      2005-11-25      last obs. used      2020-07-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49501      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 07:52:35   Additional Information  Earth MOID = 1.87446 au   Jupiter MOID = 1.90119 au   T_jup = 3.183  [ 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 15.98   n/a E2021B25   447297 (2005 WM78)          Discovered 2005-Nov-25 by Spacewatch at Kitt Peak Reference: Last Updated: 2015-10-28 [ 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 1930-Mar-13 00:26 00:06 Jupiter 1.92747030262044 1.92746888343907 1.92747172183774 4.43563569695734 4.33543175553865 2426048.518017887 6.25940394256391 457.660107939569 22.6557195907018 -81.2629731367471 2438855.10131547 T 13 CATAB v2.0f-lin.ifort 2020-Nov-12 07:52:35 2020-Nov-12 07:52 1989-Nov-19 07:24 00:02 Jupiter 1.97099560319699 1.97099466317294 1.97099654322439 4.24990767764761 4.14755690765177 2447849.808067030 1.88599270142531 158.878468991565 20.7035072078232 -74.7566445788933 2454913.56656318 T 13 CATAB v2.0f-lin.ifort 2020-Nov-12 07:52:35 2020-Nov-12 07:52 2059-Jul-12 04:56 00:03 Jupiter 1.96921960276145 1.9692179728171 1.96922123271083 4.68161509846288 4.58881878149967 2473286.705432917 3.31760959732725 229.701830974594 50.5917184907828 -74.5104412327909 1818599.33762279 T 13 CATAB v2.0f-lin.ifort 2020-Nov-12 07:52:35 2020-Nov-12 07:52 2119-Mar-20 01:15 00:08 Jupiter 1.93408739823392 1.93408565901559 1.93408913745303 4.68415025121103 4.58970315086877 2495086.551931368 7.67872364010593 173.606770803419 74.3858096778209 77.0519252293288 1667426.27823902 T 13 CATAB v2.0f-lin.ifort 2020-Nov-12 07:52:35 2020-Nov-12 07:52 2178-Nov-23 11:46 00:12 Jupiter 1.92571061544578 1.92570984707068 1.92571138383543 4.60813532748439 4.51167513734016 2516884.990198434 12.0682357288921 581.182831292956 31.0864636873427 89.1509735255039 2410590.51490902 T 13 CATAB v2.0f-lin.ifort 2020-Nov-12 07:52:35 2020-Nov-12 07:52 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 22:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin