+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1122 Neith (1928 SB) Classification: Main-belt Asteroid          SPK-ID: 2001122 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2558136815720388 3.9146e-08   a 2.608299544421691 1.0048e-08 au q 1.941060835320506 1.0209e-07 au i 4.733735521286029 4.3243e-06 deg node 63.38374878393805 4.6793e-05 deg peri 328.7643569227738 4.7468e-05 deg M 265.2055854349703 1.188e-05 deg tp 2459405.649095020244 (2021-Jul-10.14909502) 5.2429e-05 TDB period 1538.6315203965 4.21 8.891e-06 2.434e-08 d yr n .233974148603968 1.352e-09 deg/d Q 3.275538253522874 1.2618e-08 au   Orbit Determination Parameters    # obs. used (total)      2475      data-arc span      35032 days (95.91 yr)      first obs. used      1924-11-24      last obs. used      2020-10-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42303      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:22:15   Additional Information  Earth MOID = .949126 au   Jupiter MOID = 2.16663 au   T_jup = 3.359  [ 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 11.8   n/a MPO452174   diameter diameter 11.566 km 0.261 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 12.599 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Oey, J. (2009) Minor Planet Bull. 36, 162-165.] geometric albedo albedo 0.284   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   1122 Neith (1928 SB)          Discovered 1928-Sep-17 by Delporte, E. at Uccle Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1928 SB = 1941 YH = 1953 OA = A924 VA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-21 06:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin