+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2004681805032181 3.1908e-08   a 2.266322373866851 4.9352e-09 au q 1.811996851144029 7.2176e-08 au i 4.295171949873247 2.8762e-06 deg node 205.9410733800568 4.3855e-05 deg peri 125.219662164511 4.4289e-05 deg M 181.5488559484715 7.3538e-06 deg tp 2459618.228718154718 (2022-Feb-07.72871815) 2.6225e-05 TDB period 1246.180514659434 3.41 4.0705e-06 1.114e-08 d yr n .2888827066104334 9.4361e-10 deg/d Q 2.720647896589672 5.9245e-09 au   Orbit Determination Parameters    # obs. used (total)      2496      data-arc span      16604 days (45.46 yr)      first obs. used      1974-11-12      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46669      source      ORB      producer      Otto Matic      solution date      2020-May-20 01:57:20   Additional Information  Earth MOID = .805755 au   Jupiter MOID = 2.65295 au   T_jup = 3.585  [ 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 13.6   n/a MPO347551   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. 2019-August); 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 ] 2020-Oct-30 17:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin