+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15096 (1999 XH12) Classification: Main-belt Asteroid          SPK-ID: 2015096 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06638683779319751 3.693e-08   a 2.813280933800716 1.1571e-08 au q 2.626516108781792 1.0458e-07 au i 5.398966501604869 4.3991e-06 deg node 163.0828873027318 3.5224e-05 deg peri 236.9271301726893 4.5035e-05 deg M 172.2805638665454 2.8135e-05 deg tp 2458175.693898483074 (2018-Feb-26.19389848) 0.0001341 TDB period 1723.526960221155 4.72 1.0633e-05 2.911e-08 d yr n .2088740172383532 1.2886e-09 deg/d Q 3.000045758819639 1.2339e-08 au   Orbit Determination Parameters    # obs. used (total)      2181      data-arc span      16298 days (44.62 yr)      first obs. used      1975-11-02      last obs. used      2020-06-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48563      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 17:48:03   Additional Information  Earth MOID = 1.63833 au   Jupiter MOID = 2.2803 au   T_jup = 3.310  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.0   n/a MPO435841   diameter diameter 8.559 km 0.289 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 3.41 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Polishook, D.; Ofek, O.E.; Waszczak, A.; Kulkarni, S.R. (2012) ACM 2012, #6347. Supplemental material.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] geometric albedo albedo 0.264   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15096 (1999 XH12)          Discovered 1999-Dec-05 by LINEAR at Socorro Reference: 20000523/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1999 XH12 = 1975 VE5 = 1989 VX2 = 1991 CM4 = 1991 DA1 = 1991 DO1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-21 02:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin