+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1217 Maximiliana (1932 EC) Classification: Main-belt Asteroid          SPK-ID: 2001217 [ 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 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1545429603349672 3.299e-08   a 2.352192019235973 6.1942e-09 au q 1.988677301306962 7.7093e-08 au i 5.154981438259632 3.2404e-06 deg node 148.4013132285336 4.0247e-05 deg peri 91.31987571883306 4.1569e-05 deg M 109.6474522518478 1.0274e-05 deg tp 2458599.168147981310 (2019-Apr-25.66814798) 3.7505e-05 TDB period 1317.672811903331 3.61 5.2048e-06 1.425e-08 d yr n .2732089459142691 1.0792e-09 deg/d Q 2.715706737164985 7.1514e-09 au   Orbit Determination Parameters    # obs. used (total)      2709      data-arc span      34906 days (95.57 yr)      first obs. used      1925-04-23      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44431      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:59:14   Additional Information  Earth MOID = .984564 au   Jupiter MOID = 2.30318 au   T_jup = 3.535  [ 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 12.6   n/a MPO435707   rotation period rot_per 3.1987 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2015) http://www.asu.cas.cz/~ppravec/neo.htm] [Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] 1217 Maximiliana (1932 EC)          Discovered 1932-Mar-13 by Delporte, E. at Uccle Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1932 EC = 1925 HC = 1962 TD  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-21 19:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin