+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11116 (1996 EK) Classification: Main-belt Asteroid          SPK-ID: 2011116 [ 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 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2273326575545308 3.3556e-08   a 2.195493925950185 4.6775e-09 au q 1.696386457119099 7.3342e-08 au i 7.744333782773088 2.7285e-06 deg node 149.8540675388097 2.6725e-05 deg peri 76.90973497360112 2.7349e-05 deg M 123.3245569006027 6.0874e-06 deg tp 2458593.453664092540 (2019-Apr-19.95366409) 1.9829e-05 TDB period 1188.219804793554 3.25 3.7972e-06 1.04e-08 d yr n .3029742464716348 9.6823e-10 deg/d Q 2.694601394781271 5.7408e-09 au   Orbit Determination Parameters    # obs. used (total)      2208      data-arc span      23742 days (65.00 yr)      first obs. used      1955-11-16      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44425      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:44:44   Additional Information  Earth MOID = .708323 au   Jupiter MOID = 2.32204 au   T_jup = 3.624  [ 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 14.3   n/a MPO492878   diameter diameter 3.080 km 0.433 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 4.40140 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.; Wolf, M.; Sarounova, L. (2009) http://www.asu.cas.cz/~ppravec/neo.htm] [Oey, J. (2010) Minor Planet Bull. 37, 135-136.] [Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm] [Mannucci, M.; Montigiani, N. (2020) Minor Planet Bull. 47, 5-6.] [Stephens, R.D.; Warner, B.D. (2020) Minor Planet Bull. 47, 50-60.] geometric albedo albedo 0.426   0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11116 (1996 EK)          Discovered 1996-Mar-10 by Ueda, S., Kaneda, H. at Kushiro Reference: 19990728/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1996 EK = 1990 RU10  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-15 18:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin