+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15533 (2000 AP138) Classification: Main-belt Asteroid          SPK-ID: 2015533 [ 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 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1308467814192948 1.4057e-08   a 2.332091301226994 7.5734e-09 au q 2.026944660485507 3.2542e-08 au i 9.678917776665646 6.1845e-07 deg node 99.03557606013379 5.9284e-06 deg peri 52.33129314642645 8.7066e-06 deg M 226.0114415029985 6.1863e-06 deg tp 2459684.652261118802 (2022-Apr-15.15226112) 2.3979e-05 TDB period 1300.818636739564 3.56 6.3365e-06 1.735e-08 d yr n .2767488025097194 1.3481e-09 deg/d Q 2.637237941968482 8.5643e-09 au   Orbit Determination Parameters    # obs. used (total)      2383      data-arc span      15390 days (42.14 yr)      first obs. used      1978-12-22      last obs. used      2021-02-09      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .42946      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:01:23   Additional Information  Earth MOID = 1.05453 au   Jupiter MOID = 2.40223 au   T_jup = 3.540  [ 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 13.94   n/a E2021B10   diameter diameter 3.929 km 0.647 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   rotation period rot_per 114. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm] geometric albedo albedo 0.344   0.143 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   15533 (2000 AP138)          Discovered 2000-Jan-05 by LINEAR at Socorro Reference: 20000621/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  2000 AP138 = 1978 YE1 = 1994 JC1 = 1997 AE21  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-16 08:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin