+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   65679 (1989 UQ) Classification: Aten [NEO, PHA]          SPK-ID: 2065679 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456419.5 (2013-May-07.0) TDB Reference: JPL 125 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2647316079764361 2.5976e-07   a .9151005839936155 2.832e-09 au q .6728445349328099 2.362e-07 au i 1.299319042532019 5.7546e-06 deg node 178.2454146714581 0.00010867 deg peri 14.89537420756274 0.00011113 deg M 167.2036952829648 4.5361e-05 deg tp 2456270.993642445381 (2012-Dec-09.49364245) 4.0735e-05 TDB period 319.7434639777949 0.88 1.4843e-06 4.064e-09 d yr n 1.125902608051437 5.2266e-09 deg/d Q 1.157356633054421 3.5818e-09 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A2 [EST] -3.883294405241713E-14 1.042E-14 ALN [SET] 1. n/a NK [SET] 0. n/a NM [SET] 2. n/a R0 [SET] 1. n/a   Orbit Determination Parameters    # obs. used (total)      725      data-arc span      23014 days (63.01 yr)      first obs. used      1954-11-20      last obs. used      2017-11-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45257      source      ORB      producer      Otto Matic      solution date      2019-Jan-14 15:22:57   Additional Information  Earth MOID = .0139803 au   Jupiter MOID = 3.79415 au   T_jup = 6.495   Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2  [ 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 19.5   n/a MPO436239   diameter diameter 0.918 km 0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2012ApJ...760L..12M)   rotation period rot_per 7.746 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (1998) Icarus 136, 124-153.] [Pravec, P.; Wolf, M.; Sarounova, L. (2017) http://www.asu.cas.cz/~ppravec/neo.htm] [Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46, 458-503.] [Oey, J. (2020) Minor Planet Bull. 47, 136-140.] geometric albedo albedo 0.033   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2012ApJ...760L..12M)   SMASSII spectral type spec_B B   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 65679 (1989 UQ)          Discovered 1989-Oct-26 by Pollas, C. at Caussols Reference: 20030910/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1989 UQ = 1954 WZ  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-28 11:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin