+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2325 Chernykh (1979 SP) Classification: Main-belt Asteroid          SPK-ID: 2002325 [ 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 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1764309045368622 3.4588e-08   a 3.14015729915137 1.5094e-08 au q 2.586136506474063 1.1e-07 au i 1.920137162210238 4.3923e-06 deg node 139.9335924145261 0.00011378 deg peri 267.1926030142781 0.00011448 deg M 99.1885955476787 1.2271e-05 deg tp 2458640.504196506140 (2019-Jun-06.00419651) 6.8251e-05 TDB period 2032.476497369941 5.56 1.4655e-05 4.012e-08 d yr n .1771238193729896 1.2771e-09 deg/d Q 3.694178091828676 1.7757e-08 au   Orbit Determination Parameters    # obs. used (total)      2584      data-arc span      23985 days (65.67 yr)      first obs. used      1955-05-22      last obs. used      2021-01-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45229      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:02:04   Additional Information  Earth MOID = 1.59596 au   Jupiter MOID = 1.70091 au   T_jup = 3.185  [ 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 12.01   n/a E2021B10   diameter diameter 22.789 km 0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.065   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   2325 Chernykh           Discovered 1979 Sept. 25 by A. Mrkos at the Klet Observatory. Named in honor of Ludmila I. Chernykh and Nikolaj S. Chernykh, astronomers at the Crimean Astrophysical Observatory who lead the impressive program of observations and discoveries of minor planets there. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC 6060 Last Updated: 2006-03-21 [ show close-approach data ] Alternate Designations  1979 SP = 1957 UJ = 1959 CH = 1971 FR = 1974 WD1 = 1974 XN = 1979 UG3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-27 20:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin