+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   49118 (1998 SL10) Classification: Main-belt Asteroid          SPK-ID: 2049118 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .118259898535563 3.3462e-08   a 2.738618294993551 1.6298e-08 au q 2.414749573299977 9.6373e-08 au i 13.10764770854371 4.6838e-06 deg node 216.6827758840609 1.6095e-05 deg peri 256.3743098292873 2.6649e-05 deg M 219.0450706347757 2.3333e-05 deg tp 2459648.646905674222 (2022-Mar-10.14690567) 0.00010986 TDB period 1655.372303001463 4.53 1.4778e-05 4.046e-08 d yr n .2174737364804646 1.9414e-09 deg/d Q 3.062487016687125 1.8226e-08 au   Orbit Determination Parameters    # obs. used (total)      859      data-arc span      23956 days (65.59 yr)      first obs. used      1955-04-16      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53904      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 21:27:29   Additional Information  Earth MOID = 1.47072 au   Jupiter MOID = 2.20133 au   T_jup = 3.303  [ hide covariance matrix ] Orbital Elements at Epoch 2457344.5 (2015-Nov-18.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1169754182645422 3.3249e-08   q 2.419003610084181 9.5757e-08 au tp 2457986.777002609678 (2017-Aug-21.27700261) 0.00010545 TDB node 216.8205013835004 1.6049e-05 deg peri 255.1330780941649 2.6963e-05 deg i 13.12565646445846 4.6897e-06 deg   Orbit Determination Parameters    # obs. used (total)      859      data-arc span      23956 days (65.59 yr)      first obs. used      1955-04-16      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53904      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 21:27:29   Additional Information  Jupiter MOID = 2.20133 au   T_jup = 3.303  Orbit Covariance (6×6)   e q tp node peri i e 1.105513085163941E-15 -3.15037071598077E-15 -6.19439956181654E-13 9.021045108680702E-16 -9.705603218306809E-14 1.491371243950893E-15 q -3.15037071598077E-15 9.169458003859398E-15 2.267378539012933E-12 -2.484825224426871E-15 3.645399888640862E-13 -3.585235851227848E-15 tp -6.19439956181654E-13 2.267378539012933E-12 1.112024848130354E-8 1.576467755289672E-11 2.291614543279831E-9 3.630930629604244E-12 node 9.021045108680702E-16 -2.484825224426871E-15 1.576467755289672E-11 2.57580050358168E-10 -2.472601171537911E-10 -8.881224942309092E-12 peri -9.705603218306809E-14 3.645399888640862E-13 2.291614543279831E-9 -2.472601171537911E-10 7.270102485814865E-10 9.441516834181318E-12 i 1.491371243950893E-15 -3.585235851227848E-15 3.630930629604244E-12 -8.881224942309092E-12 9.441516834181318E-12 2.199283659989204E-11 [ 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 14.8   n/a MPO436127   49118 (1998 SL10)          Discovered 1998-Sep-19 by ODAS at Caussols Reference: 20021120/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 SL10 = 2000 EU155  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-26 03:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin