+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3438 Inarradas (1974 SD5) Classification: Main-belt Asteroid          SPK-ID: 2003438 [ 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 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2025205508391665 4.7406e-08   a 3.045598456136484 1.5952e-08 au q 2.428802179164808 1.4268e-07 au i 15.3004885865534 5.019e-06 deg node 2.41708619383624 1.3732e-05 deg peri 349.8149782225502 1.6576e-05 deg M 206.6597361864606 1.1694e-05 deg tp 2459827.415433566757 (2022-Sep-04.91543357) 6.7138e-05 TDB period 1941.365879258045 5.32 1.5252e-05 4.176e-08 d yr n .1854364516479425 1.4569e-09 deg/d Q 3.662394733108159 1.9182e-08 au   Orbit Determination Parameters    # obs. used (total)      2326      data-arc span      28433 days (77.85 yr)      first obs. used      1942-09-07      last obs. used      2020-07-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42678      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:00:18   Additional Information  Earth MOID = 1.42563 au   Jupiter MOID = 1.7864 au   T_jup = 3.154  [ 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 11.8   n/a MPO384783   diameter diameter 25.252 km 0.210 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 24.82 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: [Folberth, J.; Casimir, S.; Dou, Y.; Evans, D; et al. (2012) Minor Planet Bull. 39, 51-55.] geometric albedo albedo 0.045   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   3438 Inarradas (1974 SD5)          Discovered 1974-Sep-21 by Felix Aguilar Observatory at El Leoncito Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1974 SD5 = 1942 RD = 1969 TC4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-16 10:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin