+ 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 ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .167137877773279 1.7192e-08   a 2.247161775803626 4.5496e-09 au q 1.871575925582575 3.8464e-08 au i 2.680406076862534 5.3904e-07 deg node 201.5495510129224 7.8847e-06 deg peri 170.94039263 1.1032e-05 deg M 38.37584626501448 7.196e-06 deg tp 2459265.338794341234 (2021-Feb-19.83879434) 2.439e-05 TDB period 1230.410235414205 3.37 3.7366e-06 1.023e-08 d yr n .2925853423828271 8.8855e-10 deg/d Q 2.622747626024677 5.31e-09 au   Orbit Determination Parameters    # obs. used (total)      3066      data-arc span      31838 days (87.17 yr)      first obs. used      1933-11-19      last obs. used      2021-01-19      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .40524      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 12:21:46   Additional Information  Earth MOID = .871095 au   Jupiter MOID = 2.84446 au   T_jup = 3.610  [ 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 13.34   n/a MPCxxxxx   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. 2020-October); 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 Alternate Designations  1936 QF = 1933 WB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-29 13:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin