+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   7088 Ishtar (1992 AA) Classification: Amor [NEO]          SPK-ID: 2007088 [ 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 232 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3911476547923169 2.3859e-08   a 1.980335949184858 2.5521e-09 au q 1.205732186960284 4.7216e-08 au i 8.304519933705183 3.3052e-06 deg node 102.6491624225122 2.6848e-05 deg peri 354.7187906538543 2.792e-05 deg M 66.30165902225707 6.5898e-06 deg tp 2458813.031360043176 (2019-Nov-25.53136004) 1.84e-05 TDB period 1017.903795767783 2.79 1.9677e-06 5.387e-09 d yr n .3536680003520957 6.8366e-10 deg/d Q 2.754939711409432 3.5503e-09 au   Orbit Determination Parameters    # obs. used (total)      1225      data-arc span      14376 days (39.36 yr)      first obs. used      1981-03-03      last obs. used      2020-07-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43909      source      ORB      producer      Otto Matic      solution date      2020-Jul-13 07:07:53   Additional Information  Earth MOID = .222953 au   Jupiter MOID = 2.44204 au   T_jup = 3.751  [ 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 16.7   n/a MPO502220   diameter diameter 1.298 km 0.261 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   rotation period rot_per 2.6790 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Reddy, V.; Dyvig, R.; Pravec, P.; Kusnirak, P. (2005) IAUC 8483.] [Pravec, P.; Wolf, M.; Sarounova, L. (2006) http://www.asu.cas.cz/~ppravec/neo.htm] [Pravec, P.; Scheirich, P.; Kusnirak, P.; Hornoch, K.; et al. (2016) Icarus 267, 267-295.] geometric albedo albedo 0.260   0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   7088 Ishtar (1992 AA)          Discovered 1992-Jan-01 by Shoemaker, C. S. at Palomar Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-09 03:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin