+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1731602226702747 3.5363e-08   a 2.229693829771773 6.0428e-09 au q 1.843599549721955 7.8608e-08 au i 3.989081613699577 3.1838e-06 deg node 301.4751845370453 4.9991e-05 deg peri 58.50471465571103 5.0609e-05 deg M 186.1027361641604 8.5566e-06 deg tp 2459587.930542015440 (2022-Jan-08.43054202) 2.9468e-05 TDB period 1216.091561539419 3.33 4.9437e-06 1.354e-08 d yr n .2960303412880239 1.2034e-09 deg/d Q 2.615788109821591 7.0892e-09 au   Orbit Determination Parameters    # obs. used (total)      2065      data-arc span      18917 days (51.79 yr)      first obs. used      1968-08-27      last obs. used      2020-06-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4674      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 17:41:24   Additional Information  Earth MOID = .843727 au   Jupiter MOID = 2.84257 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 13.9   n/a MPO263475   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. 2019-August); 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 ] 2020-Aug-09 03:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin