+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   22765 (1999 AR5) Classification: Main-belt Asteroid          SPK-ID: 2022765 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07318048893382868 1.2684e-08   a 2.968591941670928 1.5811e-08 au q 2.751348931934426 4.4968e-08 au i 10.45559014951093 3.7995e-07 deg node 89.35380262521552 2.5345e-06 deg peri 313.0527451502458 1.7704e-05 deg M 184.0558448352273 2.0641e-05 deg tp 2460113.554132925434 (2023-Jun-18.05413293) 0.00011018 TDB period 1868.203507785339 5.11 1.4925e-05 4.086e-08 d yr n .1926984926962063 1.5395e-09 deg/d Q 3.18583495140743 1.6968e-08 au   Orbit Determination Parameters    # obs. used (total)      1767      data-arc span      9429 days (25.82 yr)      first obs. used      1995-04-26      last obs. used      2021-02-17      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51309      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 04:11:41   Additional Information  Earth MOID = 1.77277 au   Jupiter MOID = 2.13604 au   T_jup = 3.234  [ 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 13.21   n/a E2021B10   diameter diameter 7.365 km 0.291 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.167   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   22765 (1999 AR5)          Discovered 1999-Jan-12 by Kobayashi, T. at Oizumi Reference: 20010309/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-23 02:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin