+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   5725 Nordlingen (1988 BK2) Classification: Main-belt Asteroid          SPK-ID: 2005725 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05514788767312444 1.9194e-08   a 2.682802834287684 1.3433e-08 au q 2.534851924933248 5.2893e-08 au i 22.52934672163098 6.4676e-07 deg node 55.22984628140095 2.2286e-06 deg peri 77.44348103841855 1.6819e-05 deg M 160.0921161341276 1.6052e-05 deg tp 2458486.745258835955 (2019-Jan-03.24525884) 6.9398e-05 TDB period 1605.024113765715 4.39 1.2055e-05 3.3e-08 d yr n .2242956955676923 1.6846e-09 deg/d Q 2.830753743642121 1.4174e-08 au   Orbit Determination Parameters    # obs. used (total)      1961      data-arc span      24704 days (67.64 yr)      first obs. used      1953-02-15      last obs. used      2020-10-05      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .3977      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 17:53:03   Additional Information  Earth MOID = 1.62334 au   Jupiter MOID = 2.31449 au   T_jup = 3.264  [ 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 12.83   n/a E2021B10   diameter diameter 7.619 km 0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   geometric albedo albedo 0.311   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   5725 Nordlingen (1988 BK2)          Discovered 1988-Jan-23 by Shoemaker, C. S. at Palomar Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1988 BK2 = 1991 VM3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-14 09:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin