+ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06311716500445487 4.8382e-08   a 2.33252647922619 1.5573e-08 au q 2.185304020559611 1.1604e-07 au i 6.510850229213707 5.4354e-06 deg node 351.6132121393027 4.863e-05 deg peri 183.0960274130731 6.7638e-05 deg M 197.2438689172953 4.8522e-05 deg tp 2459588.765200046313 (2022-Jan-09.26520005) 0.00017804 TDB period 1301.182761029498 3.56 1.3031e-05 3.568e-08 d yr n .2766713568470331 2.7708e-09 deg/d Q 2.47974893789277 1.6556e-08 au   Orbit Determination Parameters    # obs. used (total)      211      data-arc span      6103 days (16.71 yr)      first obs. used      2004-02-26      last obs. used      2020-11-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60475      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 06:21:58   Additional Information  Earth MOID = 1.18983 au   Jupiter MOID = 2.48482 au   T_jup = 3.559  [ hide covariance matrix ] Orbital Elements at Epoch 2457485.5 (2016-Apr-07.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06221544096837976 4.8495e-08   q 2.188095354379887 1.1623e-07 au tp 2456985.314979854647 (2014-Nov-23.81497985) 0.00016991 TDB node 351.6854126152624 4.861e-05 deg peri 183.0049068312731 6.8058e-05 deg i 6.511578781368494 5.4368e-06 deg   Orbit Determination Parameters    # obs. used (total)      211      data-arc span      6103 days (16.71 yr)      first obs. used      2004-02-26      last obs. used      2020-11-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60475      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 06:21:58   Additional Information  Jupiter MOID = 2.48482 au   T_jup = 3.559  Orbit Covariance (6×6)   e q tp node peri i e 2.351803690054096E-15 -5.592870747620867E-15 1.10437625899639E-12 -2.49486377919385E-15 3.205421948884227E-13 -1.264727888146811E-15 q -5.592870747620867E-15 1.350930810535516E-14 -1.737982620120392E-12 7.648480542952501E-15 -4.988517393463956E-13 3.224420166959365E-15 tp 1.10437625899639E-12 -1.737982620120392E-12 2.886901263520284E-8 4.413879639546227E-11 8.12199634392881E-9 2.638060006569863E-12 node -2.49486377919385E-15 7.648480542952501E-15 4.413879639546227E-11 2.362921387643631E-9 -2.334402996839372E-9 5.676652501702982E-11 peri 3.205421948884227E-13 -4.988517393463956E-13 8.12199634392881E-9 -2.334402996839372E-9 4.631838534343234E-9 -5.556232322069697E-11 i -1.264727888146811E-15 3.224420166959365E-15 2.638060006569863E-12 5.676652501702982E-11 -5.556232322069697E-11 2.955845863947375E-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 ] 2021-Jan-25 15:16 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin