+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   344821 (2004 ER6) Classification: Main-belt Asteroid          SPK-ID: 2344821 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06311718857451544 5.339e-08   a 2.332526473104934 1.6812e-08 au q 2.18530395984692 1.251e-07 au i 6.510844161737341 6.0305e-06 deg node 351.6132116320939 5.0461e-05 deg peri 183.0960258637915 6.9824e-05 deg M 197.2438670683274 4.9212e-05 deg tp 2459588.765204413536 (2022-Jan-09.26520441) 0.00018013 TDB period 1301.18275590745 3.56 1.4068e-05 3.852e-08 d yr n .2766713579361375 2.9912e-09 deg/d Q 2.479748986362947 1.7873e-08 au   Orbit Determination Parameters    # obs. used (total)      168      data-arc span      5581 days (15.28 yr)      first obs. used      2004-02-26      last obs. used      2019-06-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61969      source      ORB      producer      Otto Matic      solution date      2019-Sep-24 06:31:13   Additional Information  Earth MOID = 1.18983 au   Jupiter MOID = 2.48482 au   T_jup = 3.559  [ hide covariance matrix ] Orbital Elements at Epoch 2457143.5 (2015-May-01.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06227313783327822 5.3474e-08   q 2.187560823610947 1.2521e-07 au tp 2456984.750021998900 (2014-Nov-23.25002200) 0.00017402 TDB node 351.6869544745895 5.0447e-05 deg peri 182.8179100246295 7.023e-05 deg i 6.511567998714978 6.0311e-06 deg   Orbit Determination Parameters    # obs. used (total)      168      data-arc span      5581 days (15.28 yr)      first obs. used      2004-02-26      last obs. used      2019-06-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61969      source      ORB      producer      Otto Matic      solution date      2019-Sep-24 06:31:13   Additional Information  Jupiter MOID = 2.48482 au   T_jup = 3.559  Orbit Covariance (6×6)   e q tp node peri i e 2.859449849750529E-15 -6.642216909819434E-15 2.521585240681263E-13 -2.665262725815944E-16 4.257877117436741E-14 -3.470830728929557E-15 q -6.642216909819434E-15 1.567840254750246E-14 2.52574177015294E-14 2.084769964358267E-15 7.716419742461682E-14 7.984843037960875E-15 tp 2.521585240681263E-13 2.52574177015294E-14 3.028192172191282E-8 9.313097688067191E-11 8.53289236610553E-9 -4.511769421380762E-12 node -2.665262725815944E-16 2.084769964358267E-15 9.313097688067191E-11 2.544857752618958E-9 -2.500857136326541E-9 2.237777247612707E-11 peri 4.257877117436741E-14 7.716419742461682E-14 8.53289236610553E-9 -2.500857136326541E-9 4.932305282528882E-9 -2.339068431035693E-11 i -3.470830728929557E-15 7.984843037960875E-15 -4.511769421380762E-12 2.237777247612707E-11 -2.339068431035693E-11 3.637408718848938E-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 17.2   n/a MPO437461   344821 (2004 ER6)          Discovered 2004-Mar-12 by NEAT at Palomar Reference: 20121128/Numbers.arc Last Updated: 2012-12-03 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-25 23:18 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin