+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   5543 Sharaf (1978 TW2) Classification: Main-belt Asteroid          SPK-ID: 2005543 [ 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 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09881059840734835 2.9038e-08   a 2.255302011873135 6.3987e-09 au q 2.032454270490654 6.4426e-08 au i 2.460984804816678 3.8129e-06 deg node 154.0629276187922 7.8435e-05 deg peri 310.6707698619891 8.121e-05 deg M 92.1679281175517 2.0504e-05 deg tp 2458883.774659290149 (2020-Feb-04.27465929) 7.0306e-05 TDB period 1237.101939734645 3.39 5.2648e-06 1.441e-08 d yr n .2910026962509 1.2384e-09 deg/d Q 2.478149753255617 7.031e-09 au   Orbit Determination Parameters    # obs. used (total)      2123      data-arc span      24267 days (66.44 yr)      first obs. used      1954-07-28      last obs. used      2021-01-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47318      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 19:07:18   Additional Information  Earth MOID = 1.05015 au   Jupiter MOID = 2.61352 au   T_jup = 3.616  [ 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 14.04   n/a E2021B10   diameter diameter 4.404 km 0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 5.972 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Benishek, V. (2020) Minor Planet Bull. 47, 231-241.] geometric albedo albedo 0.251   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   5543 Sharaf (1978 TW2)          Discovered 1978-Oct-03 by Chernykh, N. S. at Nauchnyj 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 1915-Jan-21 17:40 < 00:01 Iris 0.0408333607432851 0.0408243142211557 0.0408424073934815 5.03921591566243 5.03921588772445 2420519.236369381 0.217485246642417 465.253206328089 30.9372429240149 -14.258459237279 50248.5623748561 T 34 CATAB v2.0f-lin.ifort 2021-Feb-24 19:07:24 2021-Feb-24 19:07 Alternate Designations  1978 TW2 = 1966 DE = 1968 UT1 = 1978 VN12 = 1983 CE4 = 1985 WV = 1988 RQ3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-27 21:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin