+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06632721274760617 9.3275e-09   a 2.813532723814796 1.1279e-08 au q 2.62691894026998 3.1265e-08 au i 5.398929918322003 4.5958e-07 deg node 163.0796727798435 4.2508e-06 deg peri 236.7897354996056 1.6814e-05 deg M 214.2102630600044 1.8085e-05 deg tp 2459898.572990046689 (2022-Nov-15.07299005) 8.812e-05 TDB period 1723.758350152187 4.72 1.0365e-05 2.838e-08 d yr n .208845978885739 1.2558e-09 deg/d Q 3.000146507359612 1.2027e-08 au   Orbit Determination Parameters    # obs. used (total)      2280      data-arc span      16354 days (44.77 yr)      first obs. used      1975-11-02      last obs. used      2020-08-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48729      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 00:47:36   Additional Information  Earth MOID = 1.63756 au   Jupiter MOID = 2.27968 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 13.02   n/a E2021B10   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. 2020-October); 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 ] 2021-Apr-22 18:42 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin