+ 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 ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2270323491476474 1.4571e-08   a 2.196021269471288 4.5803e-09 au q 1.697453401885023 3.1627e-08 au i 7.74422346666702 3.5341e-07 deg node 149.8492016688023 9.8217e-06 deg peri 76.88683185379203 1.0693e-05 deg M 243.3223115031844 3.5205e-06 deg tp 2459781.746370692851 (2022-Jul-21.24637069) 1.2289e-05 TDB period 1188.647934632435 3.25 3.7188e-06 1.018e-08 d yr n .3028651205382547 9.4755e-10 deg/d Q 2.694589137057554 5.6202e-09 au   Orbit Determination Parameters    # obs. used (total)      2396      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      .44075      source      ORB      producer      Otto Matic      solution date      2021-Jul-09 09:56:39   Additional Information  Earth MOID = .709848 au   Jupiter MOID = 2.31971 au   T_jup = 3.623  [ 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 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 Alternate Designations  1996 EK = 1990 RU10  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Aug-03 18:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin