+ 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 | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1732934970276064 1.3028e-08   a 2.229499466359993 5.9824e-09 au q 1.843141707213288 2.8301e-08 au i 3.989076210783252 8.5814e-07 deg node 301.4745159746171 1.3702e-05 deg peri 58.50137742922508 1.427e-05 deg M 245.3259367015258 5.5639e-06 deg tp 2459587.822018553984 (2022-Jan-08.32201855) 1.9495e-05 TDB period 1215.932554133969 3.33 4.894e-06 1.34e-08 d yr n .2960690531527097 1.1917e-09 deg/d Q 2.615857225506699 7.0191e-09 au   Orbit Determination Parameters    # obs. used (total)      2089      data-arc span      19164 days (52.47 yr)      first obs. used      1968-08-27      last obs. used      2021-02-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46775      source      ORB      producer      Otto Matic      solution date      2021-Mar-16 23:59:55   Additional Information  Earth MOID = .841624 au   Jupiter MOID = 2.84319 au   T_jup = 3.620  [ 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 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 [ show close-approach data ] Alternate Designations  1998 QM54 = 1968 QV = 1985 VQ5  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-12 15:58 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin