+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14121 Stuwe (1998 QM54) Classification: Main-belt Asteroid          SPK-ID: 2014121 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1733533665973974 1.2733e-08   a 2.229998086913389 5.7875e-09 au q 1.843420411041197 2.7888e-08 au i 3.988884534952911 8.5796e-07 deg node 301.4762120252084 1.3681e-05 deg peri 58.42652944504515 1.4248e-05 deg M 303.4287779622159 5.6024e-06 deg tp 2459587.638521437589 (2022-Jan-08.13852144) 1.9264e-05 TDB period 1216.340486185248 3.33 4.7351e-06 1.296e-08 d yr n .2959697585410901 1.1522e-09 deg/d Q 2.616575762785581 6.7908e-09 au   Orbit Determination Parameters    # obs. used (total)      2183      data-arc span      19292 days (52.82 yr)      first obs. used      1968-08-27      last obs. used      2021-06-22      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46251      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 03:25:56   Additional Information  Earth MOID = .842696 au   Jupiter MOID = 2.84247 au   T_jup = 3.620  [ 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 14.00   n/a E2021B10   diameter diameter 3.709 km 0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 4.6741 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] geometric albedo albedo 0.323   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   14121 Stüwe           Discovered 1998 Aug. 27 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station. Joachim A. Stüwe (b. 1958), of the Astronomisches Institut, Ruhr-Universität Bochum, has catalogued dark clouds and globules in the southern Milky Way and pioneered the development of distance determination algorithms for interstellar clouds based on automatic star counts. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030318/MPCPages.arc Last Updated: 2003-10-02 Alternate Designations  1998 QM54 = 1968 QV = 1985 VQ5  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Aug-05 07:58 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin