+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2797 Teucer (1981 LK) Classification: Jupiter Trojan          SPK-ID: 2002797 [ 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 71 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08780787203852559 2.3268e-08   a 5.107694507826048 4.8863e-08 au q 4.659198722070979 1.3227e-07 au i 22.38907849872577 6.4144e-07 deg node 69.93403711338539 1.9192e-06 deg peri 48.28158058106767 1.6183e-05 deg M 260.2261072422691 1.7829e-05 deg tp 2460369.057841886765 (2024-Feb-28.55784189) 0.00021702 TDB period 4216.341684700273 11.54 6.0504e-05 1.657e-07 d yr n .0853820745378209 1.2252e-09 deg/d Q 5.556190293581118 5.3154e-08 au   Orbit Determination Parameters    # obs. used (total)      2293      data-arc span      29265 days (80.12 yr)      first obs. used      1940-12-28      last obs. used      2021-02-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .44834      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 14:17:27   Additional Information  Earth MOID = 3.71597 au   Jupiter MOID = .0243523 au   T_jup = 2.844  [ 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 8.94   n/a E2021B10   diameter diameter 89.430 km 0.755 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)   rotation period rot_per 10.145 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [French, L.M.; Stephens, R.D.; Lederer, S.M.; Coley, D.R.; Rohl, D.A. (2011) Minor Planet Bull. 38, 116-120.] [Stephens, R.D.; Coley, D.R.; French, L.M. (2014) Minor Planet Bull. 41, 210-212.] [Stephens, R.D.; Coley, D.R.; French, L.M. (2016) Minor Planet Bull. 43, 15-22.] geometric albedo albedo 0.073   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)   2797 Teucer (1981 LK)          Discovered 1981-Jun-04 by Bowell, E. at Flagstaff (AM) Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory. Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1981 LK = 1940 YG = 1975 VA1 = 1975 XQ2 = 1978 EQ  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-May-11 15:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin