+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   180495 (2004 CL84) Classification: Main-belt Asteroid          SPK-ID: 2180495 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2816161481604599 6.9173e-08   a 2.433696856030801 1.4963e-08 au q 1.748328521645185 1.6166e-07 au i 7.613833953888368 5.0859e-06 deg node 142.5726282757543 4.4424e-05 deg peri 246.4162604093943 4.5919e-05 deg M 238.804027602948 1.4857e-05 deg tp 2459667.356957294498 (2022-Mar-28.85695729) 6.0664e-05 TDB period 1386.749916700263 3.80 1.2789e-05 3.501e-08 d yr n .2595997992605697 2.3942e-09 deg/d Q 3.119065190416416 1.9177e-08 au   Orbit Determination Parameters    # obs. used (total)      377      data-arc span      10454 days (28.62 yr)      first obs. used      1991-10-07      last obs. used      2020-05-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51226      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 09:05:08   Additional Information  Earth MOID = .768103 au   Jupiter MOID = 2.36942 au   T_jup = 3.439  [ 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 16.55   n/a E2021B55   diameter diameter 2.618 km 0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.071   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   180495 (2004 CL84)          Discovered 2004-Feb-13 by Spacewatch at Kitt Peak Reference: 20080321/Numbers.arc Last Updated: 2008-03-26 [ show close-approach data ] Alternate Designations  2004 CL84 = 2000 CS15  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-13 17:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin