+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1422 Stromgrenia (1936 QF) Classification: Main-belt Asteroid          SPK-ID: 2001422 [ 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 .1675795306640562 3.6871e-08   a 2.247992942236669 4.8032e-09 au q 1.871275340040537 8.3103e-08 au i 2.679951034974091 4.1149e-06 deg node 201.58322039395 6.3772e-05 deg peri 170.8661140389561 6.437e-05 deg M 282.5971822751396 9.3545e-06 deg tp 2459265.194618619671 (2021-Feb-19.69461862) 3.2266e-05 TDB period 1231.092943435265 3.37 3.9457e-06 1.08e-08 d yr n .2924230878908697 9.3722e-10 deg/d Q 2.6247105444328 5.6081e-09 au   Orbit Determination Parameters    # obs. used (total)      2811      data-arc span      31664 days (86.69 yr)      first obs. used      1933-11-19      last obs. used      2020-07-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .40707      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:34:00   Additional Information  Earth MOID = .871587 au   Jupiter MOID = 2.84056 au   T_jup = 3.609  [ 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 13.3   n/a MPO473783   diameter diameter 5.814 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 3.5051 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] [Pravec, P.; Wolf, M.; Sarounova, L. (2017) http://www.asu.cas.cz/~ppravec/neo.htm] [Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.] geometric albedo albedo 0.224   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.868   0.039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=.70 deg. U-B UB 0.519   0.059 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=.70 deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices 1422 Stromgrenia (1936 QF)          Discovered 1936-Aug-23 by Reinmuth, K. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1936 QF = 1933 WB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-20 04:10 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin