+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2454 Olaus Magnus (1941 SS) Classification: Main-belt Asteroid          SPK-ID: 2002454 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2026873843249254 3.3071e-08   a 2.252115096618022 6.4889e-09 au q 1.795639778485838 7.2974e-08 au i 4.728570022855651 3.8647e-06 deg node 247.6043825553915 4.0736e-05 deg peri 76.29017167563264 4.1943e-05 deg M 128.6910085467902 1.1602e-05 deg tp 2458559.203987477797 (2019-Mar-16.70398748) 3.8888e-05 TDB period 1234.480685962078 3.38 5.3353e-06 1.461e-08 d yr n .2916206013538706 1.2604e-09 deg/d Q 2.708590414750205 7.8042e-09 au   Orbit Determination Parameters    # obs. used (total)      2312      data-arc span      19074 days (52.22 yr)      first obs. used      1968-08-27      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46348      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:06:24   Additional Information  Earth MOID = .79067 au   Jupiter MOID = 2.62892 au   T_jup = 3.595  [ 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 13.5   n/a MPO502176   diameter diameter 4.921 km 0.326 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 3.804 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Vargas, A. (2013) Minor Planet Bull. 40, 61.] geometric albedo albedo 0.349   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   2454 Olaus Magnus (1941 SS)          Discovered 1941-Sep-21 by Vaisala, Y. at Turku Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1941 SS = 1968 QQ = 1975 XV  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-23 21:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin