+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3677 Magnusson (1984 QJ1) Classification: Main-belt Asteroid          SPK-ID: 2003677 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2006244798696581 3.1457e-08   a 2.265970852524825 4.9144e-09 au q 1.811361628837227 7.1198e-08 au i 4.295712889802764 2.8742e-06 deg node 205.9355398983094 4.331e-05 deg peri 125.2535366626302 4.3746e-05 deg M 239.2998828403963 7.4132e-06 deg tp 2459618.219833784815 (2022-Feb-07.71983378) 2.6192e-05 TDB period 1245.89058984661 3.41 4.0531e-06 1.11e-08 d yr n .2889499310242981 9.4001e-10 deg/d Q 2.720580076212424 5.9004e-09 au   Orbit Determination Parameters    # obs. used (total)      2599      data-arc span      16875 days (46.20 yr)      first obs. used      1974-11-12      last obs. used      2021-01-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4672      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:12:26   Additional Information  Earth MOID = .803233 au   Jupiter MOID = 2.65321 au   T_jup = 3.586  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.72   n/a E2021B10   diameter diameter 4.836 km 0.372 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 9.4664 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2018) http://www.asu.cas.cz/~ppravec/neo.htm] [Klinglesmith III, D.A.; Lovato, E.A. (2019) Minor Planet Bull. 46, 81-82.] [Owings, L.E. (2019) Minor Planet Bull. 46, 272-274.] geometric albedo albedo 0.301   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   3677 Magnusson (1984 QJ1)          Discovered 1984-Aug-31 by Bowell, E. at Flagstaff (AM) Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory. Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1984 QJ1 = 1974 VO  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-07 07:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin