+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   5736 Sanford (1989 LW) Classification: Main-belt Asteroid          SPK-ID: 2005736 [ 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 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2760371585027448 9.3799e-09   a 2.376353086446665 9.2447e-09 au q 1.7203913328647 2.1229e-08 au i 21.58775816048209 4.1191e-07 deg node 223.74782976385 1.9249e-06 deg peri 91.13060473477523 2.5381e-06 deg M 188.2775993712729 3.8224e-06 deg tp 2459838.747808527131 (2022-Sep-16.24780853) 1.7538e-05 TDB period 1338.027014696471 3.66 7.808e-06 2.138e-08 d yr n .269052863690996 1.57e-09 deg/d Q 3.03231484002863 1.1797e-08 au   Orbit Determination Parameters    # obs. used (total)      1593      data-arc span      15622 days (42.77 yr)      first obs. used      1978-06-08      last obs. used      2021-03-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46591      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 17:53:55   Additional Information  Earth MOID = .861223 au   Jupiter MOID = 2.58764 au   T_jup = 3.398  [ 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 13.91   n/a E2021B10   diameter diameter 5.060 km 0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 3.1846 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] geometric albedo albedo 0.250   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   5736 Sanford (1989 LW)          Discovered 1989-Jun-06 by Helin, E. F. at Palomar Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-20 21:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin