+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2271911177298531 1.4576e-08   a 2.195696241226776 4.5805e-09 au q 1.696853557987227 3.1632e-08 au i 7.744177409713135 3.5343e-07 deg node 149.8522560850685 9.8231e-06 deg peri 76.90332058010598 1.0693e-05 deg M 183.9347487524826 3.4263e-06 deg tp 2459781.703156835023 (2022-Jul-21.20315683) 1.2282e-05 TDB period 1188.384050674841 3.25 3.7187e-06 1.018e-08 d yr n .3029323725739744 9.4794e-10 deg/d Q 2.694538924466324 5.6212e-09 au   Orbit Determination Parameters    # obs. used (total)      2395      data-arc span      23819 days (65.21 yr)      first obs. used      1955-11-16      last obs. used      2021-02-01      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43938      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:32:21   Additional Information  Earth MOID = .707653 au   Jupiter MOID = 2.32094 au   T_jup = 3.623  [ 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 14.32   n/a E2021B10   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-Apr-19 20:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin