+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   74439 Brenden (1999 CT2) Classification: Main-belt Asteroid          SPK-ID: 2074439 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1842952953833072 3.8979e-08   a 3.19481896633507 2.0231e-08 au q 2.606028861238156 1.3142e-07 au i 5.626880466034039 4.3569e-06 deg node 143.8167473869005 4.5892e-05 deg peri 273.134745730437 4.7693e-05 deg M 312.6645967731903 1.1751e-05 deg tp 2459274.753000739608 (2021-Mar-01.25300074) 6.8421e-05 TDB period 2085.77668163477 5.71 1.9812e-05 5.424e-08 d yr n .1725975763224291 1.6394e-09 deg/d Q 3.783609071431984 2.3959e-08 au   Orbit Determination Parameters    # obs. used (total)      692      data-arc span      9750 days (26.69 yr)      first obs. used      1994-03-05      last obs. used      2020-11-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50802      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 04:09:03   Additional Information  Earth MOID = 1.6257 au   Jupiter MOID = 1.61498 au   T_jup = 3.162  [ 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 14.9   n/a MPO449470   diameter diameter 5.939 km 0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.060   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   74439 Brenden           Discovered 1999 Feb. 6 by W. R. Cooney Jr. at Baton Rouge. Craig Brenden (b. 1946) is a teacher of chemistry and an amateur astronomer. A co-founder of the Baton Rouge Astronomical Society, he has served the society as Vice-president many times, and was editor of Night Visions (the society newsletter) for thirty years. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC batch dated 2013-07-22 Last Updated: 2014-08-13 [ show close-approach data ] Alternate Designations  1999 CT2 = 2002 PH151  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-26 10:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin