+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2250 Stalingrad (1972 HN) Classification: Main-belt Asteroid          SPK-ID: 2002250 [ 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 43 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1804000157705648 3.3247e-08   a 3.192733337975177 1.4449e-08 au q 2.616764193453247 1.0254e-07 au i 1.523993792290285 3.6288e-06 deg node 157.888584820023 0.00012866 deg peri 176.7930636126393 0.00012903 deg M 123.8970063059924 1.097e-05 deg tp 2458483.365345751771 (2018-Dec-30.86534575) 6.2013e-05 TDB period 2083.73457298682 5.70 1.4145e-05 3.873e-08 d yr n .1727667259865909 1.1728e-09 deg/d Q 3.768702482497106 1.7056e-08 au   Orbit Determination Parameters    # obs. used (total)      3015      data-arc span      24022 days (65.77 yr)      first obs. used      1955-04-16      last obs. used      2021-01-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46396      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:01:29   Additional Information  Earth MOID = 1.605 au   Jupiter MOID = 1.61412 au   T_jup = 3.170  [ 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 12.00   n/a E2021B10   diameter diameter 19.270 km 0.343 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.119   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   2250 Stalingrad (1972 HN)          Discovered 1972-Apr-18 by Smirnova, T. at Nauchnyj Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1972 HN = 1951 UL = 1968 UK  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 04:10 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin