+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120519 (1994 AM7) Classification: Main-belt Asteroid          SPK-ID: 2120519 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1633742116696916 4.9842e-08   a 2.594495652389417 1.8175e-08 au q 2.170621970499854 1.3227e-07 au i 13.37073756792148 4.5495e-06 deg node 114.3492479090918 2.3095e-05 deg peri 235.1924682607741 2.7255e-05 deg M 221.7214879311809 1.8911e-05 deg tp 2459586.813703468996 (2022-Jan-07.31370347) 8.3652e-05 TDB period 1526.433356064685 4.18 1.604e-05 4.392e-08 d yr n .2358439027617426 2.4783e-09 deg/d Q 3.01836933427898 2.1145e-08 au   Orbit Determination Parameters    # obs. used (total)      495      data-arc span      9601 days (26.29 yr)      first obs. used      1994-01-07      last obs. used      2020-04-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57975      source      ORB      producer      Otto Matic      solution date      2020-May-20 20:38:10   Additional Information  Earth MOID = 1.19164 au   Jupiter MOID = 2.4267 au   T_jup = 3.361  [ 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 15.8   n/a MPO232016   diameter diameter 2.050 km 0.571 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.221   0.099 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   120519 (1994 AM7)          Discovered 1994-Jan-07 by Spacewatch at Kitt Peak Reference: 20060314/Numbers.arc Last Updated: 2006-03-23 [ show close-approach data ] Alternate Designations  1994 AM7 = 2004 LJ21  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-19 22:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin