+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2423 Ibarruri (1972 NC) Classification: Mars-crossing Asteroid          SPK-ID: 2002423 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2830197881652313 3.4615e-08   a 2.188120275745131 6.5527e-09 au q 1.568838938823697 7.7303e-08 au i 4.057494169342936 3.2052e-06 deg node 264.9561033654354 5.0615e-05 deg peri 80.60155674214691 5.1023e-05 deg M 259.910595617104 1.0776e-05 deg tp 2459329.193273499814 (2021-Apr-24.69327350) 3.639e-05 TDB period 1182.238811285746 3.24 5.3106e-06 1.454e-08 d yr n .3045070053219463 1.3679e-09 deg/d Q 2.807401612666566 8.4073e-09 au   Orbit Determination Parameters    # obs. used (total)      2393      data-arc span      23294 days (63.78 yr)      first obs. used      1956-11-03      last obs. used      2020-08-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44753      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:09:28   Additional Information  Earth MOID = .568322 au   Jupiter MOID = 2.63397 au   T_jup = 3.619  [ 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 13.41   n/a E2021B10   diameter diameter 4.899 km 1.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)   rotation period rot_per 139.79 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2011) http://www.asu.cas.cz/~ppravec/neo.htm] [Buchheim, R.K. (2012) Minor Planet Bull. 39, 209-211.] [Ferrero, A. (2012) Minor Planet Bull. 39, 65-67.] geometric albedo albedo 0.330   0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)   SMASSII spectral type spec_B A   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 2423 Ibarruri (1972 NC)          Discovered 1972-Jul-14 by Zhuravleva, L. at Nauchnyj Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2128-Jul-25 00:06 < 00:01 Iris 0.00871093230858882 0.00870433729132276 0.00871753160961456 4.86516622773422 4.86516609208706 2498501.504453779 0.333742204142797 449.269817009007 33.7116076031977 -43.0999132310075 26484.3951419036 T 31 CATAB v2.0f-lin.ifort 2020-Nov-13 04:09:35 2020-Nov-13 04:09 Alternate Designations  1972 NC = 1930 SV = 1943 TB = 1956 VC = 1972 PB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-25 06:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin