+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3966 Cherednichenko (1976 SD3) Classification: Outer Main-belt Asteroid          SPK-ID: 2003966 [ 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 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .02217620415505456 3.2706e-08   a 3.231641226373264 1.6503e-08 au q 3.159975690781319 1.0433e-07 au i 3.52604235379603 3.7534e-06 deg node 32.27151839728768 5.2097e-05 deg peri 12.80748855485177 9.3582e-05 deg M 183.2718597969558 7.836e-05 deg tp 2460242.184838244882 (2023-Oct-24.68483824) 0.0004639 TDB period 2121.940180761876 5.81 1.6254e-05 4.45e-08 d yr n .1696560549933802 1.2996e-09 deg/d Q 3.303306761965208 1.6869e-08 au   Orbit Determination Parameters    # obs. used (total)      2727      data-arc span      24383 days (66.76 yr)      first obs. used      1953-10-31      last obs. used      2020-08-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44573      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 23:09:33   Additional Information  Earth MOID = 2.16686 au   Jupiter MOID = 1.7794 au   T_jup = 3.183  [ 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 12.21   n/a E2021B10   diameter diameter 20.885 km 0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   geometric albedo albedo 0.064   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   3966 Cherednichenko (1976 SD3)          Discovered 1976-Sep-24 by Chernykh, N. at Nauchnyj Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1976 SD3 = 1982 SV4 = 1982 UL  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-04 20:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin