+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70121 (1999 LY34) Classification: Main-belt Asteroid          SPK-ID: 2070121 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .137135241731568 2.9712e-08   a 2.335292683245323 8.4825e-09 au q 2.015041756614513 7.1988e-08 au i 4.959811681312432 3.3936e-06 deg node 70.60448467859565 4.4508e-05 deg peri 191.1121582872081 4.7191e-05 deg M 23.27805738699275 1.531e-05 deg tp 2459116.214156279522 (2020-Sep-23.71415628) 5.5488e-05 TDB period 1303.498107033928 3.57 7.1021e-06 1.944e-08 d yr n .2761799177592744 1.5048e-09 deg/d Q 2.655543609876132 9.6458e-09 au   Orbit Determination Parameters    # obs. used (total)      1128      data-arc span      9240 days (25.30 yr)      first obs. used      1995-03-28      last obs. used      2020-07-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51544      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 12:47:34   Additional Information  Earth MOID = .998142 au   Jupiter MOID = 2.39994 au   T_jup = 3.550  [ 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 15.51   n/a E2021B10   diameter diameter 2.292 km 0.248 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.280   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   70121 (1999 LY34)          Discovered 1999-Jun-13 by LONEOS at Anderson Mesa Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 LY34 = 2002 CG142  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-20 02:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin