+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 235 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3909974561743277 2.3828e-08   a 1.980461381129796 2.5721e-09 au q 1.20610601905655 4.7134e-08 au i 8.304370437916381 3.3009e-06 deg node 102.6497949283362 2.6841e-05 deg peri 354.7238830511046 2.7914e-05 deg M 137.0395615047271 6.689e-06 deg tp 2458812.982380537263 (2019-Nov-25.48238054) 1.8406e-05 TDB period 1018.000506384961 2.79 1.9831e-06 5.429e-09 d yr n .3536344016943587 6.8891e-10 deg/d Q 2.754816743203042 3.5777e-09 au   Orbit Determination Parameters    # obs. used (total)      1229      data-arc span      14376 days (39.36 yr)      first obs. used      1981-03-03      last obs. used      2020-07-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43904      source      ORB      producer      Otto Matic      solution date      2021-Apr-18 06:25:34   Additional Information  Earth MOID = .223126 au   Jupiter MOID = 2.44228 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 16.84   n/a E2021B10   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. 2020-October); Warner et al., 2009 Published Reference List: [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.] [Warner, B.D.; Stephens, R.D. (2020) Minor Planet Bull. 47, 200-213.] 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 ] 2021-May-18 15:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin